> I am testing the insert performance into a table from 2 sessions both > reading from same table. I am inserting in a batch of 1000 rows at a > time and in 1 session we are inserting 1000 batches so total 1M rows > inserted. Also we are doing commit after every 1000 rows. When I check > the view v$sql and run statement from only 1 session it shows executions > as 1000 (for 1000 batches) and increment in 1000 for each run. But when > I run both sessions concurrently it only increases the execution by 1010 > instead of 2000. Is this the normal stats or it is not showing execution > stats properly? I think Oracle is doing latchless updates to these execution counts to avoid contention/performance issues, that's how few of the incrementations might get lost. However, losing nearly half of the updates seems somewhat unlikely for a two session operation, so there might be some other issues. Btw, what's your session_cached_cursors and cursor_space_for_time parameter's values? And which version/platform? Tanel. ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------