Re: Prod problem, please help!!!

> The database hangs, and no user is able to connect to the instance, except
> locally through srvmgrl. Even within svrmgrl, we are unable to select
> anything from the
> database without the query hanging. However, we can abort the instance
> (shutdown abort) and start it up again just fine. This has happened on 4-22,
> 4-29 & 4-30 in the
> early afternoon. Usually, this is also our peak busy rate for the week. We
> are executing MTS for 4 applications, all other applications connect through
> dedicated server.
> The alert log contains a message unable to start a shared server process.
> This week it was #41 and last week it was #25. Normally, we do not exceed 5
> shared servers. Another thing I noticed is that there is no time allocated
> to any of the newly created shared servers. It is as if, it can not process
> any work through existing shared
> servers and decides to allocate another one, until finally it freezes. I am
> not sure if this is a MTS problem because I would suspect that I should be
> able to establish
> a dedicated server connection. And I can not. I think that this is just a
> symptom of the underlying problem. It would appear to me that we are running
> out of a resource,
> however our sysadms do not see any resource problems. Does anybody have any
> ideas how to debug this? Thanks

If you watch the number of avilable proc, shared memory and sempaphore slots in use/available what happens? Might be that or something inside of oracle is running out of resources.

--
Steven Lembark                              2930 W. Palmer
Workhorse Computing                      Chicago, IL 60647
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