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In this post I will explain How to Delete&Purge Audit Trail Table.

Auditing is the monitoring and collection of some user database actions and record these data in some tables. Auditing is always enabled. Oracle Database generates audit records during or after the execution phase of the audited SQL statements. But AUD$ table will growth and will impact the performance of database.

The AUD$ table is used for the database auditing purpose (CREATE SESSION, LOGON, LOGOFF, SELECT, INSERT, DELETE) when AUDIT_TRAIL is set to either DB or DB_EXTENDED value. From 11g forwards AUDIT_TRAIL is activated by default and it is set to DB.

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