RE: Database using 100% of CPU

Check to see if there are any DBMS_JOBS running.

At one place I worked, someone installed some sort of Java monitoring tool on the database and that pegged the CPU.

In your rdbms/admin directory you need to read the statspack.doc which will tell you everything you need to do. Very simple.

Then

execute statspack.snap - executes a snap or picture of your database, you need two snaps before you run a report. For me each snap is about 1/2 hour apart but it depends on the size/activity of your database.

sqlplus perfstat/perfstat_at_yoursidhere @statsrep - to run a report, asked for ids of snaps you want to compare, then gives you a report. www.permon.com is good to help analyze the report but it is under construction right now.

kathy

-----Original Message-----
Sent: Friday, August 17, 2001 11:56 AM
To: Multiple recipients of list ORACLE-L

Which are the event tables, and how do I run the statspack report? There are no jobs and no active sessions (except mine, and its not me...).

Thanks,

Steven H.

-----Original Message-----
Spence
Sent: 17 August 2001 18:35
To: Multiple recipients of list ORACLE-L

Have you looked at the event tables?

Perhaps running a statspack report from now to the next 10 minutes and look at the biggest waiters.

If it is unix, look for the process which is eating up the resources, query v$process to get the process address, then use that to get the session, then use the sql address to find the sql.\

Also query v$session for active sessions which are active for a long time.

"Do not criticize someone until you walked a mile in their shoes, that way when you criticize them, you are a mile a way and have their shoes."

Christopher R. Spence
Oracle DBA
Phone: (978) 322-5744
Fax: (707) 885-2275

Fuelspot
73 Princeton Street
North, Chelmsford 01863

-----Original Message-----
Sent: Friday, August 17, 2001 12:41 PM
To: Multiple recipients of list ORACLE-L

We are having a problem with our database - it is using 100% of the CPU. This has only started happening recently, and restarting the database temporarily stops it happening - it usually recurrs a few hours later. There are no jobs running, and at the moment there are no active connections. Obviously something has kicked this off, can anyone shed any light on this or suggest how to find out what is running on the db?

Thanks in advance,

Steven H.

(Oracle 8.1.6.0.0 EE on NT 4 SP5)

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