<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e6b3b-a36a-7a08-9269-532bf9093fd6,g:c0c7dc52-33ee-40f0-b39e-92a5eb8a70a6-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://owlrockcoreincomecorp.com/role/ConsolidatedStatementsofAssetsandLiabilities" xlink:type="simple" xlink:href="orcic-20260630.xsd#ConsolidatedStatementsofAssetsandLiabilities"/>
  <link:calculationLink xlink:role="http://owlrockcoreincomecorp.com/role/ConsolidatedStatementsofAssetsandLiabilities" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e6b3b-bfa3-7564-8595-805a6c1f6b3f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e6b3b-bfa3-7b20-b291-34856ca3b3b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e6b3b-bfa3-7564-8595-805a6c1f6b3f" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e6b3b-bfa3-7b20-b291-34856ca3b3b0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019e6b3b-bfa3-7e91-8209-199c81df6da9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e6b3b-bfa3-7564-8595-805a6c1f6b3f" xlink:to="loc_us-gaap_CommonStockValue_019e6b3b-bfa3-7e91-8209-199c81df6da9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_019e6b3b-bfa3-7f03-93ec-50dadf4bd60d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e6b3b-bfa3-7564-8595-805a6c1f6b3f" xlink:to="loc_us-gaap_AdditionalPaidInCapital_019e6b3b-bfa3-7f03-93ec-50dadf4bd60d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019e6b3b-bfa3-79b2-a210-8796a2c1a1d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019e6b3b-bfa3-7c8d-8587-1228d04734ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e6b3b-bfa3-79b2-a210-8796a2c1a1d9" xlink:to="loc_us-gaap_LongTermDebt_019e6b3b-bfa3-7c8d-8587-1228d04734ce" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DistributionPayable_019e6b3b-bfa3-740b-aa09-69a051e4f117" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DistributionPayable"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e6b3b-bfa3-79b2-a210-8796a2c1a1d9" xlink:to="loc_us-gaap_DistributionPayable_019e6b3b-bfa3-740b-aa09-69a051e4f117" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PayableInvestmentPurchase_019e6b3b-bfa3-7fc4-acaf-844e30a29f85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PayableInvestmentPurchase"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e6b3b-bfa3-79b2-a210-8796a2c1a1d9" xlink:to="loc_us-gaap_PayableInvestmentPurchase_019e6b3b-bfa3-7fc4-acaf-844e30a29f85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrentAndNoncurrent_019e6b3b-bfa3-7be0-8813-31ba59514f7b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrentAndNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e6b3b-bfa3-79b2-a210-8796a2c1a1d9" xlink:to="loc_us-gaap_AccountsPayableCurrentAndNoncurrent_019e6b3b-bfa3-7be0-8813-31ba59514f7b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_TenderOfferPayable_019e6b3b-bfa3-70e9-8227-d9ccb5e24b69" xlink:href="orcic-20260630.xsd#orcic_TenderOfferPayable"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e6b3b-bfa3-79b2-a210-8796a2c1a1d9" xlink:to="loc_orcic_TenderOfferPayable_019e6b3b-bfa3-70e9-8227-d9ccb5e24b69" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities_019e6b3b-bfa3-7b3e-86c5-e97115cf1ecb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesAndOtherLiabilities"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e6b3b-bfa3-79b2-a210-8796a2c1a1d9" xlink:to="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities_019e6b3b-bfa3-7b3e-86c5-e97115cf1ecb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019e6b3b-bfa3-7b8a-8ecf-c81ffe9a496a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentOwnedAtFairValue_019e6b3b-bfa3-79f8-a2d4-65eba4e869a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentOwnedAtFairValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e6b3b-bfa3-7b8a-8ecf-c81ffe9a496a" xlink:to="loc_us-gaap_InvestmentOwnedAtFairValue_019e6b3b-bfa3-79f8-a2d4-65eba4e869a3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashNotHeldInForeignCurrency_019e6b3b-bfa3-761e-bcff-c5733f7494f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashNotHeldInForeignCurrency"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e6b3b-bfa3-7b8a-8ecf-c81ffe9a496a" xlink:to="loc_us-gaap_CashNotHeldInForeignCurrency_019e6b3b-bfa3-761e-bcff-c5733f7494f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_019e6b3b-bfa3-7d71-b45d-0ed93c3c0337" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e6b3b-bfa3-7b8a-8ecf-c81ffe9a496a" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssets_019e6b3b-bfa3-7d71-b45d-0ed93c3c0337" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_ReceivableForInvestmentSold_019e6b3b-bfa3-7b4e-84cb-7714d4200ca8" xlink:href="orcic-20260630.xsd#orcic_ReceivableForInvestmentSold"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e6b3b-bfa3-7b8a-8ecf-c81ffe9a496a" xlink:to="loc_orcic_ReceivableForInvestmentSold_019e6b3b-bfa3-7b4e-84cb-7714d4200ca8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNet_019e6b3b-bfa3-7978-aed3-a44f9d347553" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e6b3b-bfa3-7b8a-8ecf-c81ffe9a496a" xlink:to="loc_us-gaap_AccountsReceivableNet_019e6b3b-bfa3-7978-aed3-a44f9d347553" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashHeldInForeignCurrency_019e6b3b-bfa3-7f3a-97ce-42cb1231c326" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashHeldInForeignCurrency"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e6b3b-bfa3-7b8a-8ecf-c81ffe9a496a" xlink:to="loc_us-gaap_CashHeldInForeignCurrency_019e6b3b-bfa3-7f3a-97ce-42cb1231c326" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendAndInterestReceivable_019e6b3b-bfa3-7424-bb34-cd51b5a68ca6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendAndInterestReceivable"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e6b3b-bfa3-7b8a-8ecf-c81ffe9a496a" xlink:to="loc_us-gaap_DividendAndInterestReceivable_019e6b3b-bfa3-7424-bb34-cd51b5a68ca6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e6b3b-bfa3-7da0-9aa1-e67210dc45cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019e6b3b-bfa3-7df6-b6ca-47ca42c4822b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e6b3b-bfa3-7da0-9aa1-e67210dc45cf" xlink:to="loc_us-gaap_Liabilities_019e6b3b-bfa3-7df6-b6ca-47ca42c4822b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_019e6b3b-bfa3-7d2e-b93e-842709678c48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e6b3b-bfa3-7da0-9aa1-e67210dc45cf" xlink:to="loc_us-gaap_CommitmentsAndContingencies_019e6b3b-bfa3-7d2e-b93e-842709678c48" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e6b3b-bfa3-7981-b85b-ea803d44179f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e6b3b-bfa3-7da0-9aa1-e67210dc45cf" xlink:to="loc_us-gaap_StockholdersEquity_019e6b3b-bfa3-7981-b85b-ea803d44179f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://owlrockcoreincomecorp.com/role/ConsolidatedStatementsofOperations" xlink:type="simple" xlink:href="orcic-20260630.xsd#ConsolidatedStatementsofOperations"/>
  <link:calculationLink xlink:role="http://owlrockcoreincomecorp.com/role/ConsolidatedStatementsofOperations" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnInvestments_019e6b3b-bfa4-7141-aa46-8a5c7c44aefd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrealizedGainLossOnInvestments"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_UnrealizedGainLossForeignCurrencyTransactionNetBeforeTax_019e6b3b-bfa4-794f-ae3f-f76813e947c9" xlink:href="orcic-20260630.xsd#orcic_UnrealizedGainLossForeignCurrencyTransactionNetBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UnrealizedGainLossOnInvestments_019e6b3b-bfa4-7141-aa46-8a5c7c44aefd" xlink:to="loc_orcic_UnrealizedGainLossForeignCurrencyTransactionNetBeforeTax_019e6b3b-bfa4-794f-ae3f-f76813e947c9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit_019e6b3b-bfa4-7b49-94df-1b9b9437af34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UnrealizedGainLossOnInvestments_019e6b3b-bfa4-7141-aa46-8a5c7c44aefd" xlink:to="loc_us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit_019e6b3b-bfa4-7b49-94df-1b9b9437af34" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_019e6b3b-bfa4-7a8e-a93e-811e619d87ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UnrealizedGainLossOnInvestments_019e6b3b-bfa4-7141-aa46-8a5c7c44aefd" xlink:to="loc_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_019e6b3b-bfa4-7a8e-a93e-811e619d87ea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossInvestmentIncomeOperating_019e6b3b-bfa4-7571-a803-ead547808cd7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossInvestmentIncomeOperating"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeOperating_019e6b3b-bfa4-70dd-b191-27491ac4fb6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeOperating"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossInvestmentIncomeOperating_019e6b3b-bfa4-7571-a803-ead547808cd7" xlink:to="loc_us-gaap_InterestIncomeOperating_019e6b3b-bfa4-70dd-b191-27491ac4fb6d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeOperatingPaidInKind_019e6b3b-bfa4-7cb9-a4ee-23995c91166b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeOperatingPaidInKind"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossInvestmentIncomeOperating_019e6b3b-bfa4-7571-a803-ead547808cd7" xlink:to="loc_us-gaap_InterestIncomeOperatingPaidInKind_019e6b3b-bfa4-7cb9-a4ee-23995c91166b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendIncomeOperating_019e6b3b-bfa4-7827-a85d-08679cc8457a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendIncomeOperating"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossInvestmentIncomeOperating_019e6b3b-bfa4-7571-a803-ead547808cd7" xlink:to="loc_us-gaap_DividendIncomeOperating_019e6b3b-bfa4-7827-a85d-08679cc8457a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendIncomeOperatingPaidInKind_019e6b3b-bfa4-72e4-8cd2-e8e9310cce38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendIncomeOperatingPaidInKind"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossInvestmentIncomeOperating_019e6b3b-bfa4-7571-a803-ead547808cd7" xlink:to="loc_us-gaap_DividendIncomeOperatingPaidInKind_019e6b3b-bfa4-72e4-8cd2-e8e9310cce38" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncome_019e6b3b-bfa4-7723-bcb0-debcd275625f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherIncome"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossInvestmentIncomeOperating_019e6b3b-bfa4-7571-a803-ead547808cd7" xlink:to="loc_us-gaap_OtherIncome_019e6b3b-bfa4-7723-bcb0-debcd275625f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentIncome_019e6b3b-bfa4-7998-bec2-5f8892d87a82" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossInvestmentIncomeOperating_019e6b3b-bfa4-7f6d-bfa2-bcca5e51394e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossInvestmentIncomeOperating"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetInvestmentIncome_019e6b3b-bfa4-7998-bec2-5f8892d87a82" xlink:to="loc_us-gaap_GrossInvestmentIncomeOperating_019e6b3b-bfa4-7f6d-bfa2-bcca5e51394e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInvestmentExpense_019e6b3b-bfa4-72ba-b546-fbc3f62b0f55" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeInvestmentExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetInvestmentIncome_019e6b3b-bfa4-7998-bec2-5f8892d87a82" xlink:to="loc_us-gaap_InvestmentIncomeInvestmentExpense_019e6b3b-bfa4-72ba-b546-fbc3f62b0f55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedInvestmentGainsLosses_019e6b3b-bfa4-757e-8e38-df21ad43173c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RealizedInvestmentGainsLosses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_019e6b3b-bfa4-7593-aecc-46014084d9a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtAndEquitySecuritiesRealizedGainLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RealizedInvestmentGainsLosses_019e6b3b-bfa4-757e-8e38-df21ad43173c" xlink:to="loc_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_019e6b3b-bfa4-7593-aecc-46014084d9a3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized_019e6b3b-bfa4-7c05-9ff1-2eaf52889104" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCurrencyTransactionGainLossRealized"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RealizedInvestmentGainsLosses_019e6b3b-bfa4-757e-8e38-df21ad43173c" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized_019e6b3b-bfa4-7c05-9ff1-2eaf52889104" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax_019e6b3b-bfa4-755c-834f-b827869e5135" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedInvestmentGainsLosses_019e6b3b-bfa4-7946-ad4d-924c01401044" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RealizedInvestmentGainsLosses"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax_019e6b3b-bfa4-755c-834f-b827869e5135" xlink:to="loc_us-gaap_RealizedInvestmentGainsLosses_019e6b3b-bfa4-7946-ad4d-924c01401044" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnInvestments_019e6b3b-bfa4-76c4-9256-9fdbb082140a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrealizedGainLossOnInvestments"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax_019e6b3b-bfa4-755c-834f-b827869e5135" xlink:to="loc_us-gaap_UnrealizedGainLossOnInvestments_019e6b3b-bfa4-76c4-9256-9fdbb082140a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInvestmentExpense_019e6b3b-bfa4-7720-9d8d-32494f1d35c9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeInvestmentExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestExpenseOfferingCost_019e6b3b-bfa4-734a-9fac-441ccee678dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestExpenseOfferingCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentIncomeInvestmentExpense_019e6b3b-bfa4-7720-9d8d-32494f1d35c9" xlink:to="loc_us-gaap_NoninterestExpenseOfferingCost_019e6b3b-bfa4-734a-9fac-441ccee678dd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOperating_019e6b3b-bfa4-70a3-bb75-eb85dbfb8d96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseOperating"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentIncomeInvestmentExpense_019e6b3b-bfa4-7720-9d8d-32494f1d35c9" xlink:to="loc_us-gaap_InterestExpenseOperating_019e6b3b-bfa4-70a3-bb75-eb85dbfb8d96" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ManagementFeeExpense_019e6b3b-bfa4-7caf-986a-6524d2e3a47c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ManagementFeeExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentIncomeInvestmentExpense_019e6b3b-bfa4-7720-9d8d-32494f1d35c9" xlink:to="loc_us-gaap_ManagementFeeExpense_019e6b3b-bfa4-7caf-986a-6524d2e3a47c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncentiveFeeExpense_019e6b3b-bfa4-7705-aff9-ca33b49ae17c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncentiveFeeExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentIncomeInvestmentExpense_019e6b3b-bfa4-7720-9d8d-32494f1d35c9" xlink:to="loc_us-gaap_IncentiveFeeExpense_019e6b3b-bfa4-7705-aff9-ca33b49ae17c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfessionalFees_019e6b3b-bfa4-738a-bc43-a74eec1762e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfessionalFees"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentIncomeInvestmentExpense_019e6b3b-bfa4-7720-9d8d-32494f1d35c9" xlink:to="loc_us-gaap_ProfessionalFees_019e6b3b-bfa4-738a-bc43-a74eec1762e7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestExpenseDirectorsFees_019e6b3b-bfa4-79bd-9545-088033f3a25f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoninterestExpenseDirectorsFees"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentIncomeInvestmentExpense_019e6b3b-bfa4-7720-9d8d-32494f1d35c9" xlink:to="loc_us-gaap_NoninterestExpenseDirectorsFees_019e6b3b-bfa4-79bd-9545-088033f3a25f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExpenseRelatedToDistributionOrServicingAndUnderwritingFees_019e6b3b-bfa4-7f31-b3e6-60715bfdeefa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ExpenseRelatedToDistributionOrServicingAndUnderwritingFees"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentIncomeInvestmentExpense_019e6b3b-bfa4-7720-9d8d-32494f1d35c9" xlink:to="loc_us-gaap_ExpenseRelatedToDistributionOrServicingAndUnderwritingFees_019e6b3b-bfa4-7f31-b3e6-60715bfdeefa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherGeneralAndAdministrativeExpense_019e6b3b-bfa4-7e45-8546-8c0776d440ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentIncomeInvestmentExpense_019e6b3b-bfa4-7720-9d8d-32494f1d35c9" xlink:to="loc_us-gaap_OtherGeneralAndAdministrativeExpense_019e6b3b-bfa4-7e45-8546-8c0776d440ac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e6b3b-bfa4-761b-83de-00c1f163db26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax_019e6b3b-bfa4-77ac-9d62-707261e35443" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019e6b3b-bfa4-761b-83de-00c1f163db26" xlink:to="loc_us-gaap_RealizedAndUnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax_019e6b3b-bfa4-77ac-9d62-707261e35443" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax_019e6b3b-bfa4-7c50-a80b-266082017a8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019e6b3b-bfa4-761b-83de-00c1f163db26" xlink:to="loc_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax_019e6b3b-bfa4-7c50-a80b-266082017a8d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax_019e6b3b-bfa4-7668-a9a2-e93aa0201539" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeOperatingTaxExpenseBenefit_019e6b3b-bfa4-78fc-a350-dbb3442e9f6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeOperatingTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax_019e6b3b-bfa4-7668-a9a2-e93aa0201539" xlink:to="loc_us-gaap_InvestmentIncomeOperatingTaxExpenseBenefit_019e6b3b-bfa4-78fc-a350-dbb3442e9f6d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentIncome_019e6b3b-bfa4-7d03-be61-81a7c065c075" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentIncome"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax_019e6b3b-bfa4-7668-a9a2-e93aa0201539" xlink:to="loc_us-gaap_NetInvestmentIncome_019e6b3b-bfa4-7d03-be61-81a7c065c075" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://owlrockcoreincomecorp.com/role/ConsolidatedStatementsofChangesinNetAssets" xlink:type="simple" xlink:href="orcic-20260630.xsd#ConsolidatedStatementsofChangesinNetAssets"/>
  <link:calculationLink xlink:role="http://owlrockcoreincomecorp.com/role/ConsolidatedStatementsofChangesinNetAssets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityPeriodIncreaseDecrease_019e6b3b-bfa4-7333-b0e3-f4af09060a17" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityPeriodIncreaseDecrease"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyDividendDistribution_019e6b3b-bfa4-7648-a3c9-b8f0e7c4208a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentCompanyDividendDistribution"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityPeriodIncreaseDecrease_019e6b3b-bfa4-7333-b0e3-f4af09060a17" xlink:to="loc_us-gaap_InvestmentCompanyDividendDistribution_019e6b3b-bfa4-7648-a3c9-b8f0e7c4208a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e6b3b-bfa4-7570-aa3f-687ba72774d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityPeriodIncreaseDecrease_019e6b3b-bfa4-7333-b0e3-f4af09060a17" xlink:to="loc_us-gaap_NetIncomeLoss_019e6b3b-bfa4-7570-aa3f-687ba72774d0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_InvestmentCompanyCapitalTransactionsIncreaseDecrease_019e6b3b-bfa4-77e6-9556-51cc898f3cd1" xlink:href="orcic-20260630.xsd#orcic_InvestmentCompanyCapitalTransactionsIncreaseDecrease"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityPeriodIncreaseDecrease_019e6b3b-bfa4-7333-b0e3-f4af09060a17" xlink:to="loc_orcic_InvestmentCompanyCapitalTransactionsIncreaseDecrease_019e6b3b-bfa4-77e6-9556-51cc898f3cd1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e6b3b-bfa4-7c83-b666-c1361ab4eedb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_019e6b3b-bfa4-7c09-b372-3c7422e1e1db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019e6b3b-bfa4-7c83-b666-c1361ab4eedb" xlink:to="loc_us-gaap_UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_019e6b3b-bfa4-7c09-b372-3c7422e1e1db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax_019e6b3b-bfa4-7b94-860b-df0d125c6ed3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019e6b3b-bfa4-7c83-b666-c1361ab4eedb" xlink:to="loc_us-gaap_InvestmentIncomeOperatingAfterExpenseAndTax_019e6b3b-bfa4-7b94-860b-df0d125c6ed3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_019e6b3b-bfa4-7e03-a5fc-df88bd50c48f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019e6b3b-bfa4-7c83-b666-c1361ab4eedb" xlink:to="loc_us-gaap_RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingBeforeTax_019e6b3b-bfa4-7e03-a5fc-df88bd50c48f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_InvestmentCompanyCapitalTransactionsIncreaseDecrease_019e6b3b-bfa4-76a7-a72e-3b57863cc73f" xlink:href="orcic-20260630.xsd#orcic_InvestmentCompanyCapitalTransactionsIncreaseDecrease"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_019e6b3b-bfa4-7a5c-a22c-df44ae8274aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_InvestmentCompanyCapitalTransactionsIncreaseDecrease_019e6b3b-bfa4-76a7-a72e-3b57863cc73f" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_019e6b3b-bfa4-7a5c-a22c-df44ae8274aa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_019e6b3b-bfa4-794c-a836-f5ac8cfe7f22" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_InvestmentCompanyCapitalTransactionsIncreaseDecrease_019e6b3b-bfa4-76a7-a72e-3b57863cc73f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_019e6b3b-bfa4-794c-a836-f5ac8cfe7f22" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_019e6b3b-bfa4-7d3a-9ece-192b870e91f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_InvestmentCompanyCapitalTransactionsIncreaseDecrease_019e6b3b-bfa4-76a7-a72e-3b57863cc73f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_019e6b3b-bfa4-7d3a-9ece-192b870e91f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_StockIssuedDuringPeriodValueTransferredBetweenClasses_019e6b3b-bfa4-797f-b41e-b81d90fe6da7" xlink:href="orcic-20260630.xsd#orcic_StockIssuedDuringPeriodValueTransferredBetweenClasses"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_InvestmentCompanyCapitalTransactionsIncreaseDecrease_019e6b3b-bfa4-76a7-a72e-3b57863cc73f" xlink:to="loc_orcic_StockIssuedDuringPeriodValueTransferredBetweenClasses_019e6b3b-bfa4-797f-b41e-b81d90fe6da7" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://owlrockcoreincomecorp.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="orcic-20260630.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://owlrockcoreincomecorp.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInReceivableForInvestmentSold_019e6b3b-bfa4-70fd-8bea-f34a11a73d9f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInReceivableForInvestmentSold"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_IncreaseDecreaseInReceivableForInvestmentSold_019e6b3b-bfa4-70fd-8bea-f34a11a73d9f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities_019e6b3b-bfa4-74ef-ad2f-69541535b0a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities_019e6b3b-bfa4-74ef-ad2f-69541535b0a1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDispositionOfInvestmentOperatingActivity_019e6b3b-bfa4-72f8-8e36-8efc3e007b24" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromDispositionOfInvestmentOperatingActivity"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_ProceedsFromDispositionOfInvestmentOperatingActivity_019e6b3b-bfa4-72f8-8e36-8efc3e007b24" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_019e6b3b-bfa4-79a1-8516-02b82b1895b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtAndEquitySecuritiesRealizedGainLoss"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_019e6b3b-bfa4-79a1-8516-02b82b1895b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndDividendIncomeOperatingPaidInKind_019e6b3b-bfa4-7d74-8aa2-f163903879a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestAndDividendIncomeOperatingPaidInKind"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_InterestAndDividendIncomeOperatingPaidInKind_019e6b3b-bfa4-7d74-8aa2-f163903879a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_AmortizationOfOfferingCosts_019e6b3b-bfa4-724a-8416-b0838905d373" xlink:href="orcic-20260630.xsd#orcic_AmortizationOfOfferingCosts"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_orcic_AmortizationOfOfferingCosts_019e6b3b-bfa4-724a-8416-b0838905d373" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_019e6b3b-bfa4-72ef-a65b-201fb4c9f2ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCurrencyTransactionGainLossUnrealized"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_019e6b3b-bfa4-72ef-a65b-201fb4c9f2ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_019e6b3b-bfa4-75d9-a5cc-caad026c9b0b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_019e6b3b-bfa4-75d9-a5cc-caad026c9b0b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_019e6b3b-bfa4-7f43-8b6d-f491954e82de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_019e6b3b-bfa4-7f43-8b6d-f491954e82de" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_019e6b3b-bfa4-7e0c-8716-c68364f43eb4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_019e6b3b-bfa4-7e0c-8716-c68364f43eb4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_ForeignCurrencyTransactionGainLossRealizedNoncash_019e6b3b-bfa4-75b4-a1f6-0c6ea9cac054" xlink:href="orcic-20260630.xsd#orcic_ForeignCurrencyTransactionGainLossRealizedNoncash"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_orcic_ForeignCurrencyTransactionGainLossRealizedNoncash_019e6b3b-bfa4-75b4-a1f6-0c6ea9cac054" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019e6b3b-c077-709b-9807-2018167b5a54" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="12" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019e6b3b-c077-709b-9807-2018167b5a54" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019e6b3b-c077-74a8-a821-b3efe9a65945" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019e6b3b-c077-74a8-a821-b3efe9a65945" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPayableForInvestmentPurchased_019e6b3b-c077-7b76-b446-598013bdd225" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInPayableForInvestmentPurchased"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_IncreaseDecreaseInPayableForInvestmentPurchased_019e6b3b-c077-7b76-b446-598013bdd225" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit_019e6b3b-c077-7bfb-85a2-45ed06060163" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_UnrealizedGainLossInvestmentAndDerivativeOperatingTaxExpenseBenefit_019e6b3b-c077-7bfb-85a2-45ed06060163" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForPurchaseOfInvestmentOperatingActivity_019e6b3b-c077-7b4c-b73d-e7109683c4b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForPurchaseOfInvestmentOperatingActivity"/>
    <link:calculationArc order="16" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_PaymentsForPurchaseOfInvestmentOperatingActivity_019e6b3b-c077-7b4c-b73d-e7109683c4b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivatives_019e6b3b-c077-7a9e-bce7-5d5ef89e20c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrealizedGainLossOnDerivatives"/>
    <link:calculationArc order="17" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_UnrealizedGainLossOnDerivatives_019e6b3b-c077-7a9e-bce7-5d5ef89e20c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDueToAffiliates_019e6b3b-c077-791f-9e51-548e9dbceba6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInDueToAffiliates"/>
    <link:calculationArc order="18" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_IncreaseDecreaseInDueToAffiliates_019e6b3b-c077-791f-9e51-548e9dbceba6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e6b3b-c077-7bcc-aea1-10e027c91d0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="19" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_NetIncomeLoss_019e6b3b-c077-7bcc-aea1-10e027c91d0e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_ForeignCurrencyTransactionGainLossRealizedDebt_019e6b3b-c077-7639-8f8a-47325e8d0c7b" xlink:href="orcic-20260630.xsd#orcic_ForeignCurrencyTransactionGainLossRealizedDebt"/>
    <link:calculationArc order="20" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_orcic_ForeignCurrencyTransactionGainLossRealizedDebt_019e6b3b-c077-7639-8f8a-47325e8d0c7b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInterestAndDividendsReceivable_019e6b3b-c077-76ba-8b3e-ffbc382ab7ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInterestAndDividendsReceivable"/>
    <link:calculationArc order="21" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_us-gaap_IncreaseDecreaseInInterestAndDividendsReceivable_019e6b3b-c077-76ba-8b3e-ffbc382ab7ee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_NetChangeInUnrealizedGainLossOnForeignCurrencyForwardContracts_019e6b3b-c077-7d67-9cd5-24cbe5c5bb35" xlink:href="orcic-20260630.xsd#orcic_NetChangeInUnrealizedGainLossOnForeignCurrencyForwardContracts"/>
    <link:calculationArc order="22" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_orcic_NetChangeInUnrealizedGainLossOnForeignCurrencyForwardContracts_019e6b3b-c077-7d67-9cd5-24cbe5c5bb35" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_ForeignCurrencyTransactionGainLossRealizedForwardContract_019e6b3b-c077-7d68-9aeb-a2da2f90211e" xlink:href="orcic-20260630.xsd#orcic_ForeignCurrencyTransactionGainLossRealizedForwardContract"/>
    <link:calculationArc order="23" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-74fb-a500-e968213bd059" xlink:to="loc_orcic_ForeignCurrencyTransactionGainLossRealizedForwardContract_019e6b3b-c077-7d68-9aeb-a2da2f90211e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e6b3b-bfa4-7aa1-b046-2142917470a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfDebt_019e6b3b-bfa4-7e8a-8abc-300d08cc798d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e6b3b-bfa4-7aa1-b046-2142917470a2" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfDebt_019e6b3b-bfa4-7e8a-8abc-300d08cc798d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_019e6b3b-bfa4-70fb-adb5-ee8a83207d40" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e6b3b-bfa4-7aa1-b046-2142917470a2" xlink:to="loc_us-gaap_RepaymentsOfDebt_019e6b3b-bfa4-70fb-adb5-ee8a83207d40" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_PaymentsOfDeferredOfferingCosts_019e6b3b-bfa4-7ce6-a1d7-7c70be0e54e6" xlink:href="orcic-20260630.xsd#orcic_PaymentsOfDeferredOfferingCosts"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e6b3b-bfa4-7aa1-b046-2142917470a2" xlink:to="loc_orcic_PaymentsOfDeferredOfferingCosts_019e6b3b-bfa4-7ce6-a1d7-7c70be0e54e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_019e6b3b-bfa4-7430-a6ec-bd7c52c9c468" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e6b3b-bfa4-7aa1-b046-2142917470a2" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_019e6b3b-bfa4-7430-a6ec-bd7c52c9c468" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019e6b3b-bfa4-78b7-ac56-6983fc959b26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e6b3b-bfa4-7aa1-b046-2142917470a2" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019e6b3b-bfa4-78b7-ac56-6983fc959b26" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_019e6b3b-bfa4-7cff-b58a-35e746387b64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e6b3b-bfa4-7aa1-b046-2142917470a2" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_019e6b3b-bfa4-7cff-b58a-35e746387b64" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_019e6b3b-bfa4-73be-884b-10d79017dd67" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e6b3b-bfa4-7aa1-b046-2142917470a2" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_019e6b3b-bfa4-73be-884b-10d79017dd67" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e6b3b-bfa4-761c-9de7-80f44f64c3c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-764f-b656-b48216bc5289" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e6b3b-bfa4-761c-9de7-80f44f64c3c0" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e6b3b-bfa4-764f-b656-b48216bc5289" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e6b3b-bfa4-7993-addf-bef667434723" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e6b3b-bfa4-761c-9de7-80f44f64c3c0" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e6b3b-bfa4-7993-addf-bef667434723" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://owlrockcoreincomecorp.com/role/SignificantAccountingPoliciesDetails" xlink:type="simple" xlink:href="orcic-20260630.xsd#SignificantAccountingPoliciesDetails"/>
  <link:calculationLink xlink:role="http://owlrockcoreincomecorp.com/role/SignificantAccountingPoliciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_orcic_InterestAndDividendIncomeEarnedOperatingPaidInKind_019e6b3b-c077-7991-ada6-6d348e0e6ad5" xlink:href="orcic-20260630.xsd#orcic_InterestAndDividendIncomeEarnedOperatingPaidInKind"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendIncomeOperatingPaidInKind_019e6b3b-c077-741f-b9a2-22c916788088" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendIncomeOperatingPaidInKind"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_InterestAndDividendIncomeEarnedOperatingPaidInKind_019e6b3b-c077-7991-ada6-6d348e0e6ad5" xlink:to="loc_us-gaap_DividendIncomeOperatingPaidInKind_019e6b3b-c077-741f-b9a2-22c916788088" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeOperatingPaidInKind_019e6b3b-c077-7b4d-90cd-a9c71bae62e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeOperatingPaidInKind"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_InterestAndDividendIncomeEarnedOperatingPaidInKind_019e6b3b-c077-7991-ada6-6d348e0e6ad5" xlink:to="loc_us-gaap_InterestIncomeOperatingPaidInKind_019e6b3b-c077-7b4d-90cd-a9c71bae62e0" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://owlrockcoreincomecorp.com/role/AgreementsandRelatedPartyTransactionsManagementFeesDetails" xlink:type="simple" xlink:href="orcic-20260630.xsd#AgreementsandRelatedPartyTransactionsManagementFeesDetails"/>
  <link:calculationLink xlink:role="http://owlrockcoreincomecorp.com/role/AgreementsandRelatedPartyTransactionsManagementFeesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_orcic_ManagementFeesNetOfManagementFeeWaivers_019fc8f3-2251-71e3-8697-8b9190331430" xlink:href="orcic-20260630.xsd#orcic_ManagementFeesNetOfManagementFeeWaivers"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ManagementFeeExpense_019fc8f3-6801-7d0a-87d0-ce41c5ee7fb8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ManagementFeeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_ManagementFeesNetOfManagementFeeWaivers_019fc8f3-2251-71e3-8697-8b9190331430" xlink:to="loc_us-gaap_ManagementFeeExpense_019fc8f3-6801-7d0a-87d0-ce41c5ee7fb8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyManagementFeeWaived_019fc8f3-b8f1-7e52-ab29-ec86045a3650" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentCompanyManagementFeeWaived"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_ManagementFeesNetOfManagementFeeWaivers_019fc8f3-2251-71e3-8697-8b9190331430" xlink:to="loc_us-gaap_InvestmentCompanyManagementFeeWaived_019fc8f3-b8f1-7e52-ab29-ec86045a3650" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://owlrockcoreincomecorp.com/role/DebtScheduleofOutstandingDebtObligationsDetails" xlink:type="simple" xlink:href="orcic-20260630.xsd#DebtScheduleofOutstandingDebtObligationsDetails"/>
  <link:calculationLink xlink:role="http://owlrockcoreincomecorp.com/role/DebtScheduleofOutstandingDebtObligationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_orcic_LineOfCreditFacilityMaximumBorrowingCapacityAndDebtInstrumentFaceAmount_019e6b3b-c077-72e9-b9da-7bba8ac9ffa2" xlink:href="orcic-20260630.xsd#orcic_LineOfCreditFacilityMaximumBorrowingCapacityAndDebtInstrumentFaceAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e6b3b-c077-7f29-93a2-898a8d2e63d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_LineOfCreditFacilityMaximumBorrowingCapacityAndDebtInstrumentFaceAmount_019e6b3b-c077-72e9-b9da-7bba8ac9ffa2" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e6b3b-c077-7f29-93a2-898a8d2e63d8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019e6b3b-c077-7684-89d2-2d9af8a7630c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_LineOfCreditFacilityMaximumBorrowingCapacityAndDebtInstrumentFaceAmount_019e6b3b-c077-72e9-b9da-7bba8ac9ffa2" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019e6b3b-c077-7684-89d2-2d9af8a7630c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://owlrockcoreincomecorp.com/role/DebtScheduleofComponentsofInterestExpenseDetails" xlink:type="simple" xlink:href="orcic-20260630.xsd#DebtScheduleofComponentsofInterestExpenseDetails"/>
  <link:calculationLink xlink:role="http://owlrockcoreincomecorp.com/role/DebtScheduleofComponentsofInterestExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_019e6b3b-c077-78a9-9881-064db8caa948" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_019e6b3b-c077-79e5-96e6-902a1cdccc9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpense_019e6b3b-c077-78a9-9881-064db8caa948" xlink:to="loc_us-gaap_InterestExpenseDebt_019e6b3b-c077-79e5-96e6-902a1cdccc9e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_019e6b3b-c077-77ef-8cdb-b69c40cc7d08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpense_019e6b3b-c077-78a9-9881-064db8caa948" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_019e6b3b-c077-77ef-8cdb-b69c40cc7d08" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_UnrealizedGainLossOnDerivativesAndHedgedItems_019e6b3b-c077-7cfb-9a21-e947e429b1bc" xlink:href="orcic-20260630.xsd#orcic_UnrealizedGainLossOnDerivativesAndHedgedItems"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpense_019e6b3b-c077-78a9-9881-064db8caa948" xlink:to="loc_orcic_UnrealizedGainLossOnDerivativesAndHedgedItems_019e6b3b-c077-7cfb-9a21-e947e429b1bc" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://owlrockcoreincomecorp.com/role/DebtScheduleofMaturityofDebtObligationsDetails" xlink:type="simple" xlink:href="orcic-20260630.xsd#DebtScheduleofMaturityofDebtObligationsDetails"/>
  <link:calculationLink xlink:role="http://owlrockcoreincomecorp.com/role/DebtScheduleofMaturityofDebtObligationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019e6b3b-c159-7db8-bbea-3e21ec9af1ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_019e6b3b-c159-78d4-83ae-2aaa8c195cae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019e6b3b-c159-7db8-bbea-3e21ec9af1ff" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_019e6b3b-c159-78d4-83ae-2aaa8c195cae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_LongTermDebtMaturityYearOneToThree_019e6b3b-c159-76fd-8f15-5fd00ba11301" xlink:href="orcic-20260630.xsd#orcic_LongTermDebtMaturityYearOneToThree"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019e6b3b-c159-7db8-bbea-3e21ec9af1ff" xlink:to="loc_orcic_LongTermDebtMaturityYearOneToThree_019e6b3b-c159-76fd-8f15-5fd00ba11301" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_LongTermDebtMaturityYearThreeToFive_019e6b3b-c159-76ac-932a-cef6b34b8168" xlink:href="orcic-20260630.xsd#orcic_LongTermDebtMaturityYearThreeToFive"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019e6b3b-c159-7db8-bbea-3e21ec9af1ff" xlink:to="loc_orcic_LongTermDebtMaturityYearThreeToFive_019e6b3b-c159-76ac-932a-cef6b34b8168" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_019e6b3b-c159-786f-8f5b-5aac8d1ff5a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_019e6b3b-c159-7db8-bbea-3e21ec9af1ff" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_019e6b3b-c159-786f-8f5b-5aac8d1ff5a7" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://owlrockcoreincomecorp.com/role/NetAssetsCommonStockTransactionsDetails" xlink:type="simple" xlink:href="orcic-20260630.xsd#NetAssetsCommonStockTransactionsDetails"/>
  <link:calculationLink xlink:role="http://owlrockcoreincomecorp.com/role/NetAssetsCommonStockTransactionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyIncreaseDecreaseFromShareTransaction_019e6b3b-c159-7692-81c3-dd54bf1c3925" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentCompanyIncreaseDecreaseFromShareTransaction"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_StockSalesLoadChargeDuringPeriodValue_019e6b3b-c159-7b85-ac66-22031a00a336" xlink:href="orcic-20260630.xsd#orcic_StockSalesLoadChargeDuringPeriodValue"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentCompanyIncreaseDecreaseFromShareTransaction_019e6b3b-c159-7692-81c3-dd54bf1c3925" xlink:to="loc_orcic_StockSalesLoadChargeDuringPeriodValue_019e6b3b-c159-7b85-ac66-22031a00a336" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseGross_019fd2fd-6554-7fa4-9576-51272378a35f" xlink:href="orcic-20260630.xsd#orcic_StockholdersEquityPeriodIncreaseDecreaseGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentCompanyIncreaseDecreaseFromShareTransaction_019e6b3b-c159-7692-81c3-dd54bf1c3925" xlink:to="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseGross_019fd2fd-6554-7fa4-9576-51272378a35f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease_019e6b3b-c159-7a20-af6e-7cf58207193d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseSharesGross_019e6b3b-c159-7bd4-b007-bedac7440ff0" xlink:href="orcic-20260630.xsd#orcic_StockholdersEquityPeriodIncreaseDecreaseSharesGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease_019e6b3b-c159-7a20-af6e-7cf58207193d" xlink:to="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseSharesGross_019e6b3b-c159-7bd4-b007-bedac7440ff0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_StockSaleLoadChargeDuringPeriodShares_019e6b3b-c159-7e57-812d-b9a3b0c4443c" xlink:href="orcic-20260630.xsd#orcic_StockSaleLoadChargeDuringPeriodShares"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease_019e6b3b-c159-7a20-af6e-7cf58207193d" xlink:to="loc_orcic_StockSaleLoadChargeDuringPeriodShares_019e6b3b-c159-7e57-812d-b9a3b0c4443c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseSharesGross_019e6b3b-c159-7277-b408-b8b753311b23" xlink:href="orcic-20260630.xsd#orcic_StockholdersEquityPeriodIncreaseDecreaseSharesGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_019e6b3b-c159-7229-a035-41c5a46359ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseSharesGross_019e6b3b-c159-7277-b408-b8b753311b23" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_019e6b3b-c159-7229-a035-41c5a46359ff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan_019e6b3b-c159-78da-a480-9a59a69aa68f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseSharesGross_019e6b3b-c159-7277-b408-b8b753311b23" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan_019e6b3b-c159-78da-a480-9a59a69aa68f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_019e6b3b-c159-7388-8adc-09ffbd0e0ab4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseSharesGross_019e6b3b-c159-7277-b408-b8b753311b23" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_019e6b3b-c159-7388-8adc-09ffbd0e0ab4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_ShareTransfersBetweenClassesShares_019e6b3b-c159-75d1-a255-ad45d14dea62" xlink:href="orcic-20260630.xsd#orcic_ShareTransfersBetweenClassesShares"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseSharesGross_019e6b3b-c159-7277-b408-b8b753311b23" xlink:to="loc_orcic_ShareTransfersBetweenClassesShares_019e6b3b-c159-75d1-a255-ad45d14dea62" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseGross_019e6b3b-c159-7e6f-961b-b28c4a32447c" xlink:href="orcic-20260630.xsd#orcic_StockholdersEquityPeriodIncreaseDecreaseGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_019e6b3b-c159-711f-8fde-0dc4985da24b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseGross_019e6b3b-c159-7e6f-961b-b28c4a32447c" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_019e6b3b-c159-711f-8fde-0dc4985da24b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_ShareTransfersBetweenClasses_019e6b3b-c159-7292-9a06-7f9a08e5fba3" xlink:href="orcic-20260630.xsd#orcic_ShareTransfersBetweenClasses"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseGross_019e6b3b-c159-7e6f-961b-b28c4a32447c" xlink:to="loc_orcic_ShareTransfersBetweenClasses_019e6b3b-c159-7292-9a06-7f9a08e5fba3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_019e6b3b-c159-72da-b45b-fe8257d9bf15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseGross_019e6b3b-c159-7e6f-961b-b28c4a32447c" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_019e6b3b-c159-72da-b45b-fe8257d9bf15" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_019e6b3b-c159-727f-869b-ddddf52b4ead" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_StockholdersEquityPeriodIncreaseDecreaseGross_019e6b3b-c159-7e6f-961b-b28c4a32447c" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_019e6b3b-c159-727f-869b-ddddf52b4ead" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://owlrockcoreincomecorp.com/role/FinancialHighlightsDetails" xlink:type="simple" xlink:href="orcic-20260630.xsd#FinancialHighlightsDetails"/>
  <link:calculationLink xlink:role="http://owlrockcoreincomecorp.com/role/FinancialHighlightsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_orcic_InvestmentCompanyPeriodIncreaseDecreaseForShareholderDistributions_019e6b3b-c15a-7161-a671-ee4b7aca5f4d" xlink:href="orcic-20260630.xsd#orcic_InvestmentCompanyPeriodIncreaseDecreaseForShareholderDistributions"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_InvestmentCompanyDistributionToShareholdersFromNetInvestmentIncomePerShare_019e6b3b-c15a-7221-95f9-60e30f497ddc" xlink:href="orcic-20260630.xsd#orcic_InvestmentCompanyDistributionToShareholdersFromNetInvestmentIncomePerShare"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_InvestmentCompanyPeriodIncreaseDecreaseForShareholderDistributions_019e6b3b-c15a-7161-a671-ee4b7aca5f4d" xlink:to="loc_orcic_InvestmentCompanyDistributionToShareholdersFromNetInvestmentIncomePerShare_019e6b3b-c15a-7221-95f9-60e30f497ddc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_InvestmentCompanyDistributionToShareholdersExcessOfNetInvestmentIncomePerShare_019e6b3b-c15a-71f9-b126-de241edf88ef" xlink:href="orcic-20260630.xsd#orcic_InvestmentCompanyDistributionToShareholdersExcessOfNetInvestmentIncomePerShare"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_orcic_InvestmentCompanyPeriodIncreaseDecreaseForShareholderDistributions_019e6b3b-c15a-7161-a671-ee4b7aca5f4d" xlink:to="loc_orcic_InvestmentCompanyDistributionToShareholdersExcessOfNetInvestmentIncomePerShare_019e6b3b-c15a-71f9-b126-de241edf88ef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare_019e6b3b-c15a-7411-8fe8-20eec7ea488a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare_019e6b3b-c15a-7690-8c7b-0dd1da936914" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare_019e6b3b-c15a-7411-8fe8-20eec7ea488a" xlink:to="loc_us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare_019e6b3b-c15a-7690-8c7b-0dd1da936914" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare_019e6b3b-c15a-74c5-a0ea-18619189834d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare_019e6b3b-c15a-7411-8fe8-20eec7ea488a" xlink:to="loc_us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare_019e6b3b-c15a-74c5-a0ea-18619189834d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease_019e6b3b-c15a-7c9e-8093-ef528d211051" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare_019e6b3b-c15a-75ce-86bd-8cd480401d36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease_019e6b3b-c15a-7c9e-8093-ef528d211051" xlink:to="loc_us-gaap_InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare_019e6b3b-c15a-75ce-86bd-8cd480401d36" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_orcic_InvestmentCompanyPeriodIncreaseDecreaseForShareholderDistributions_019e6b3b-c15a-7bc1-8f1e-5a2fdb0ad8d8" xlink:href="orcic-20260630.xsd#orcic_InvestmentCompanyPeriodIncreaseDecreaseForShareholderDistributions"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease_019e6b3b-c15a-7c9e-8093-ef528d211051" xlink:to="loc_orcic_InvestmentCompanyPeriodIncreaseDecreaseForShareholderDistributions_019e6b3b-c15a-7bc1-8f1e-5a2fdb0ad8d8" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
