Hello Guys !
I’m here again, to give an small explanation of why, we need know how to deinstall an Release Update.
It’s depends, on my case, the last RU had some issues in the import datapump.
After review all cases and aply some workarounds, and debug and review all logs and traces with the ADRCI tool to stay sure of my desicion, deinstall.
I review the oracle document from MOS: Database 19c Release Updates and Revisions Bugs Fixed Lists (Doc ID 2523220.1)
The first step is verificate the number of the RU, to start with the procediment:
select CON_ID, TO_CHAR(action_time, 'YYYY-MM-DD') AS action_time, PATCH_ID, PATCH_TYPE, ACTION, DESCRIPTION, SOURCE_VERSION, TARGET_VERSION from CDB_REGISTRY_SQLPATCH order by CON_ID, action_time, patch_id;
This query help us, with the list of the number, to verified the last patch applied.Sigue leyendo