P.S. I think about writing script that will be executed on boot time and will execute
commands manually. It is good way?
We setup both: fault monitor and the script to stop/start the instance during server reboot. On Linux, the script is setup with chkconfig to stop the applications prior to db2stop and restart them after db2start. The reason for the script is because I don't trust fault monitor 100% and to automate shutdown/start up of the applications. So far, it seems to work ok...
If you just use the script (no fault monitor), then db2 won't restart if it terminates abnormally (ie. crash).
There may be a specific problem with RHEL 6.3 x64 and DB2 v9x/v10 instances starting at boot.
Please check the /var/log/messages for any segmentation-violations that happen after boot (relating to the fm) and in particular whether you have any messages from abrt after the segmentation violation.