Autotrace is Oracle server feature that generates two statement execution reports very useful for performance tuning:

* Statement execution path - Shows you the execution loop logic of a DML statement.

* Statement execution statistics - Shows you various execution statistics of a DML statement.

To turn on the autotrace feature, the Oracle server DBA need to:

* Create a special table called PLAN_TABLE.

* Create a special security role called PLUSTRACE.

* Grant PLUSTRACE role your user account