Patching Oracle Grid Infrastructure and Oracle Databases Simultaneously
This procedure patches Oracle Grid Infrastructure and Oracle Databases on the cluster to the latest patch level without cluster downtime.
Before You Begin
In this procedure, Oracle Grid Infrastructure 21c is running on the target cluster.
        Working copy GI_HOME_21c_WCPY is the active Grid home on this cluster.
        Working copy DB_HOME_21c_WCPY runs an Oracle RAC 21c Database with running
        database instance db1. Working copy DB_HOME_21c_WCPY runs
        an Oracle RAC 19c Database with running database instance db2
Ensure that you have images GI_HOME_21c_PSU1,
          DB_HOME_21c_PSU1, DB_HOME_19c_PSU5 with the required
        patches for Oracle Grid Infrastructure and Oracle RAC Database on the Fleet Patching and
        Provisioning Server. 
                  
The groups configured in the source home must match with those in the destination home.
Procedure
Parent topic: Oracle Fleet Patching and Provisioning Use Cases