not sure what a runaway query is?
do you have a SQL that can show me what the active session is doing? i do not think it is doing anything. most of these web pages should run in 5-15 seconds.
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troublesshoot_sessions
i have 2 databases A and B. They both use same oracle apache web server.
A has been locking up (ORA-00020) with some issues releasing HTTPD sessions. Some sessions stay there in ACTIVE mode for hours and some stay in INACTIVE status.
Some say it is the SQL and i think it has nothing to do with it.
1. Can i create a small procedure in B that would call "hello workd" in A every second to prove that SQL code is not part of the problem?
anyone has pl/sql for that?
2. We only have one DB acount. Would setting IDLE_TIME and CONNECT_TIME might solve the issue? Are not those set by default. I guess setting IDLE_TIME for web session (HTTPD) at 1 or 2 minutes would not hurt. Any ideas?
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Answers
ok i understand what a runaway query us. no i do not have any
A runaway query is a query whose execution time is taking longer than the execution time estimated by the optimizer. Runaway queries can lead to using up all of your processor cycles or other resources during its execution.
The problem i found now, i have INACTIVE session in this database since 6:00 AM this monring and they still there. AL of these have httpd@webserver program. If you can tell me why those sessions are not going away in 15 minutes (setting on MOD_PLSQL to clean up those) you will be a champ.
I believe database will not cleanup those unless i set a profile and IDLE_TIME.
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by: mrjoltcolaPosted on 2009-11-07 at 07:00:05ID: 25766519
I don't have time to go into a long answer to everything.
If you are having problems with "runaway" queries, you can set CPU_PER_CALL limit on a profile that will limit the total CPU consumed by an active query. When it is exceeded, the session is killed. It will have _no_ effect in idle (INACTIVE) queries.
But until you find out what those ACTIVE sesions are doing, you are just shooting in the dark. Find out what those ACTIVE sessions are doing (ie. what SQL is executing). A hello world procedure will prove nothing.