Database - RAC/Scalability (MOSC)

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Reducing HWM on aud$ table

edited May 21, 2018 5:01AM in Database - RAC/Scalability (MOSC) 2 commentsAnswered

Hello,

I have a 2 node rac database along with dataguard set up for production environment. A shadow (clone) copy is refreshed daily which takes approx. 2 to 3 hrs with consistent data for internal testing.

Database operation auditing is enabled in this database and approx. size of audit table is 250 GB. Purging is scheduled on this table with retention of  1 month data through standard oracle scripts.

Due to frequent purging activity on this table HWM levels are too high. There is performance issue observed which query hits this table.

Requirement is to restore the high water mark on this table with minimum or no downtime as there are continuous DML operation on this audit table.  

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