Question

Oracle consuming CPU

Asked by: imran_fast

CPU utilization.
All of a sudden the cpu utilization becomes 70 to 90 percents. I am looking at the top sql in Enterprise manager but this is confusing which column to look for disk per read or cpu time.

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Asked On
2007-03-10 at 05:19:44ID22440841
Tags

oracle

,

cpu

,

sql

,

top

,

consuming

Topics

Oracle ERP

,

Oracle Database

Participating Experts
2
Points
500
Comments
6

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Answers

 

by: mohammadzahidPosted on 2007-03-10 at 17:07:09ID: 18695794

Please post the SQL Statement and explain plan output or trace file output

 

by: imran_fastPosted on 2007-03-10 at 23:05:28ID: 18696516

Is there any proper way of identifying the exact sql statement running at that particular time when the cpu utilization is 90%.

I was using V$sqlarea but unable to identify it.

 

by: FayyazPosted on 2007-03-11 at 00:14:38ID: 18696617

You have to identify the time at which the CPU was become 90%. then you have to check the top 10 SQLs from statspack or AWR. And generate the top SQL report  in terms of parse calls

 

by: imran_fastPosted on 2007-03-11 at 01:27:46ID: 18696717

hi Fayyaz

Why parse calls why not cpu time?

 

by: FayyazPosted on 2007-03-11 at 05:20:15ID: 18696922

because parse calls consume so much time of CPU. by the way, how can you extract Top SQL in terms of high CPU time.
Only top SQL in terms of below is avialble
1. Top SQL with high buffer gets
2. Top SQL with high physical reads
3. Top SQL with high execution count
4. Top SQL with high shared memory
5. Top SQL with high version count
6. Top SQL with high parse count

 

by: imran_fastPosted on 2007-03-12 at 07:02:21ID: 18701982

I prefered Buffer Gets and thanks for your help

20120131-EE-VQP-002

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