Thursday, April 3, 2008

RAC - Troubleshooting

Overview

The clusterware is an oracle software which manage oracle and user defined resources.
There a lot of places which can get wrong. This post intend to provide the initial steps for troubleshooting RAC.

Ok ... you did srvctl .... and go an error . What next ?

1. relax .

2. go the machine which has reported on the error (incase you don't sure . go to the machine you run the command on .

3. cd $ORA_CRS_HOME/log/`hostname`/crsd

4. check crsd.log for errors.


When thing is important to remember :
when something in wrong , first check on the node level .
For example - If cluster can not start database - check alertlog, try to start database without RAC .






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