Manually remove Oracle installation from Linux

Stop all the databases and listener on the box either manually or using your startup script

Code Snippet

1. /etc/init.d/oracle stop

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You can view all oracle processes using the command, this will search all running processes that begin with 'ora'.

Code Snippet

1. ps -ef | grep ora

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Kill the relevent processes using the process' PID and the kill command

Code Snippet

1. kill <PID>

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Remove all files within your $ORACLE_BASE directory (Don't forget to re-create this directory structure on a new install)

Code Snippet

1. rm -rf $ORACLE_BASE

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Remove all Oracle references in etc

Code Snippet

1. rm -rf /etc/ora*

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Remove any temporary files

Code Snippet

1. rm -rf /tmp/.oracle
2. rm -rf /var/tmp/.oracle

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This should be enough to remove Oracle from the machine...