Which of the following activities can damage the performance of datadbase?

What activities can be identified as the common causes of impassable of suboptimal performance of database?

1 large amounts of recursive SQL executed by SYS
2. recursive SQL executed by one user other than SYS

The correct answer must be 1. large amounts of recursive SQL executed by SYS.
Please see the following statement in this linked page:

http://www.Oracle.com/technology/deploy/performance/PDF/perf_method1.PDF

"High of Recursive (SYS) SQL levels: large amounts of recursive SQL executed by SYS.
could indicate management activities of space, such as the measure benefits, taking place. It comes
impassable and impact on the user response time. Recursive SQL executed under another user, what ID is
SQL and PL/SQL and it's probably not a problem. »

Tags: Database

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