Hello Team -
We have an EBS application which is running EBS and several other modules
(OTC). From time to time I see a particular query giving poor response time.
Normal response is <4 mins and during the poor execution, it goes over an hour.
We have a SQL baseline created for that SQL_ID and forcing the optimal plan. We
are able to see that optimizer is using the same hash. There are no host
resource (cpu/memory/io) constraints.. This job runs only a couple of times a
day, very time sensitive for the business. We are unable to reproduce this at
lower environments even when we performed refreshes..
We see a pattern that this issue shows up during the first week of the month
and disappears after a couple of days (not the same exact day).
Here is what I am thinking of gathering - high level info..
1. Gather daily row count of all the tables involved in the query..
2. Review the jobs and see if there is anything unique..
What else could I gather to troubleshoot this further?
Appreciate any insights..
Thank you
-Upendra
