How to limit Query Time?

Hello -
How can I limit a query to run for only 30 seconds? I created a profile named LIMIT_CPU. I then put a resource limit on this profile for the CPU/Call to have a value of 3000. I assigned my user to this profile, ran the query, and I never can limit the time to 30 seconds.
Any help with this is greatly appreciated!
Thanks,
Mike

You cannot do that at least using resource profiles. You can limit CPU time or I/O using resource profiles. Also remember that CPU_per_call and logical_reads_per_call means - if you get at least one row back in allowable limits Oracle resets the counter and starts again i.e. from Oracle docs: "CPU_PER_CALL Specify the CPU time limit for a call (a parse, execute, or fetch), expressed in hundredths of seconds". The same applies for logical_reads_per_call.
I have succesfully used these limits setting some sensible value for one of our OLTP app. It mostly was necessary for searching - if a user gives some very bad criteria, then prevent him to slow down all other users. CPU_per_call and logical_reads_per_call together with maximum returned record count (tipically 100) for search works very well for us and the message we give to user in case he exceeds the limit is something very general - "your search query exceeded allowable resource limits".
Gints Plivna
http://www.gplivna.eu

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