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Hitting ORA-04036: PGA memory used by the instance exceeds after upgrade to 19C

in Database Administration (MOSC) 2 commentsAnswered

Database hosted on two node based cluster Of Oracle 19C. It has been recently upgraded to 19c from 12,2

There are almost 40 databases are active on the server. And the below error almost hitting all of the databases on frequent basis.

ORA-04036: PGA memory used by the instance exceeds PGA_AGGREGATE_LIMIT

Present setting PGA_AGGREGATE_LIMIT=4GB and PGA_AGGREGATE_TARGET=512M

after increasing the setting from 4G to 5 or^6 GB the problem still persists.

So Is this bug and will this resolve permanently to change the value to 0?

Please suggest with oracle recommended approach with doc ID.

Many Thanks!!

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