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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a05939-47ce-7e43-8d7d-168be9a37995,g:ed2d5e9b-92a3-4dc9-98a6-03fc8362df9e-->
<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://www.pacoakcmg.com/role/Cover" xlink:type="simple" xlink:href="pacoaksor-20260831.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.pacoakcmg.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_01a05939-47ce-75c4-b17c-7e59a04a2665" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_DocumentType_01a05939-47ce-75c4-b17c-7e59a04a2665" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_01a05939-47ce-732f-a40f-1faf851315ec" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_DocumentPeriodEndDate_01a05939-47ce-732f-a40f-1faf851315ec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_01a05939-47ce-7953-b530-70330fc0f8f3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_EntityRegistrantName_01a05939-47ce-7953-b530-70330fc0f8f3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_01a05939-47ce-78c5-bae6-381d02da2db2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_EntityIncorporationStateCountryCode_01a05939-47ce-78c5-bae6-381d02da2db2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_01a05939-47ce-743d-a11a-fef6e2ed407a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_EntityFileNumber_01a05939-47ce-743d-a11a-fef6e2ed407a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_01a05939-47ce-75a9-a564-b42ff6049baf" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_EntityTaxIdentificationNumber_01a05939-47ce-75a9-a564-b42ff6049baf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_01a05939-47ce-7372-98ea-5773da56cdde" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_EntityAddressAddressLine1_01a05939-47ce-7372-98ea-5773da56cdde" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_01a05939-47ce-78ae-985b-0ea067643a37" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine2"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_EntityAddressAddressLine2_01a05939-47ce-78ae-985b-0ea067643a37" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_01a05939-47ce-7cd0-84e5-ce0db749e701" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_EntityAddressCityOrTown_01a05939-47ce-7cd0-84e5-ce0db749e701" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_01a05939-47ce-76bc-9395-c5c032268f7c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_EntityAddressStateOrProvince_01a05939-47ce-76bc-9395-c5c032268f7c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_01a05939-47ce-7fd1-9e68-f34b63286733" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_EntityAddressPostalZipCode_01a05939-47ce-7fd1-9e68-f34b63286733" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_01a05939-47ce-74b7-90ce-fb18f87f4289" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_CityAreaCode_01a05939-47ce-74b7-90ce-fb18f87f4289" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_01a05939-47ce-7912-b7a0-0d4b807a32d7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_LocalPhoneNumber_01a05939-47ce-7912-b7a0-0d4b807a32d7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_01a05939-47ce-7928-a213-b65ffb349c5a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_WrittenCommunications_01a05939-47ce-7928-a213-b65ffb349c5a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_01a05939-47ce-7994-90c1-1d1372d2f104" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_SolicitingMaterial_01a05939-47ce-7994-90c1-1d1372d2f104" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_01a05939-47ce-7f71-8500-558e9c84b879" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_PreCommencementTenderOffer_01a05939-47ce-7f71-8500-558e9c84b879" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_01a05939-47ce-70fa-918b-e9a32a257b01" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_01a05939-47ce-70fa-918b-e9a32a257b01" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_01a05939-47ce-75a0-9d23-6382891a093e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_EntityEmergingGrowthCompany_01a05939-47ce-75a0-9d23-6382891a093e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_01a05939-47ce-771f-85ac-21b55e57213b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_EntityCentralIndexKey_01a05939-47ce-771f-85ac-21b55e57213b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_01a05939-47ce-73fd-ac20-4c19c249625c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a05939-47ce-7244-8ebc-0db2e9f2403e" xlink:to="loc_dei_AmendmentFlag_01a05939-47ce-73fd-ac20-4c19c249625c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
