Phases of patch installation

1. Prerequisite/conflict checks
2. Backup of files/libraries that would be affected/modified by patching
3. System Update
4. Relinking
5. Inventory Update
6. Verification Phase

Space Check:
$ORACLE_HOME/OPatch/opatch prereq CheckSystemSpace -phBaseDir Pathc_loc -oh $ORACLE_HOME

Conflicts Check:
$ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir Pathc_loc -oh $ORACLE_HOME

Rolling
-- Node by Node patching

Non-Rolling
-- Patching all Nodes at same time

MOS Conflict Checker
==================
Integrated into MOS
Identify Conflicts and resolution with the existing inventory
Identify Conflicts and resolution between the patches planned to install
Option to upload “lsinventory” output
Option to raise a request for Overlay/Merge with development team
Provides tracking number (request id)
Using ARU tool we can track the progress of Overlay/Merge requests

#Patching #OPatch #Conflicts #Patches #PSU #SPU #BP #ONEOFF #Oracle #RAC #Database #Exadata

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Mallikarjun Ramadurg
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