Ocasionly we in our RHEL 4.6 environments, stumble upon a problem when some processes (namely PMON) just won't die (kill -9). Other processes, can be killed but stay <defunct>. Is there any other method, more agressive to kill a process for sure?
running Oracle DB 10.2.0.4 with EBS 184.108.40.206 on ASM.
Why would you want to kill -9 pmon? Doing that will surely crash your database. If you want pmon to go away, shutdown the database properly with shutdown or shutdown immediate as the database owner in sqlplus.
Please share the output when you give the shutdown immediate command
also , try
shutdown abort to instantly shutdiwn the db. That should help
also check the spaces in all the mount pointts : specially /var and /tmp with df -h command
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