Oracle stores audit trail records in the SYS.AUD$ base data dictionary table which resides in SYSTEM tablespace.
Based on the auditing option this SYS.AUD$ table grows out of order inside the SYSTEM tablespace and must have records deleted from it or be truncated, otherwise it will take up all the room in the SYSTEM tablespace. This deleting and truncating of the SYS.AUD$ table will fragment the SYSTEM tablespace.
So it may be one's choice to move the audit table out of the SYSTEM tablespace and then enable auditing without touching SYSTEM tablespace.
Until 11g the way to move out SYS.AUD$ is not supported. If you want to do it you have to do it manually which is discussed in How to move audit table out of SYSTEM tablespace which is not supported. 'Not supported' means Oracle Support cannot involve development if problems arise because of the triggers you put on the AUD$ table.
In 11g you can do it by the DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_LOCATION provided with the DBMS_MGMT package.
Based on the auditing option this SYS.AUD$ table grows out of order inside the SYSTEM tablespace and must have records deleted from it or be truncated, otherwise it will take up all the room in the SYSTEM tablespace. This deleting and truncating of the SYS.AUD$ table will fragment the SYSTEM tablespace.
So it may be one's choice to move the audit table out of the SYSTEM tablespace and then enable auditing without touching SYSTEM tablespace.
Until 11g the way to move out SYS.AUD$ is not supported. If you want to do it you have to do it manually which is discussed in How to move audit table out of SYSTEM tablespace which is not supported. 'Not supported' means Oracle Support cannot involve development if problems arise because of the triggers you put on the AUD$ table.
In 11g you can do it by the DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_LOCATION provided with the DBMS_MGMT package.
Related Post :-
- Basic Database Auditing
- How To Move Audit Table Out Of SYSTEM Tablespace
- How To Reorganize Audit Trail SYS.AUD$ Table
- Truncate or Delete Rows From Audit Trail Tablespace
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