Resmgr: waiting in end wait average count
This morning our users experienced a severe slowdown when attempting to perform any function involving our 9.2.0.5 production database. Even the ability to login was subject to extraordinary waits. Examination of Instance Wait Events Analysis, recorded by the Enterprise Manager Capacity Planner, showed an extraordinary spike in the entry "resmgr: waiting in end wait average count." The count recorded was more than 400% greater than the count we typically see. This abberation also corresponds timewise to the slowdown we experienced. After about 25 minutes, the problem disappeared as suddenly as it happened, and the count returned to normal.
What is this "resmgr: waiting in end wait average count?" What should I be looking at to determine the cause of the sudden increase in the count from a typical peak count of 4000 - 5000 to over 18,000? Thanks in advance for your help.
Regards. . .
Check your resource plan. The ACTIVE_SESS_POOL_P1 is probably set to a value that is too low. If you run over the amount of sessions allowed, new sessions have to wait. If you are using connection pooling, it can snowball pretty fast.
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