quick steps of taking backup before trying to delete OIM 11gR2ps2 OAM 11gR2 SOA 11gR2 domain

1. taking backup of existing domains(in case of you have to comeback and use it again).
tar with following command.

cd $DOMAIN_HOME
tar -cvzf ./dev_domain.tar.gz ./dev_domain
rename or delete existing domain

2. take backup of stage domain

cd <MW_HOME>/user_projects/applications

tar -cvzf ./dev_domain.tar.gz ./dev_domain
rename or delete existing domain


3. take backup of database.

cd /oracle/oradata

  tar -cvzf db.tar.gz ./db

4. run RCU to drop all the domains.


you can recreate domains using RCU, configure domains and follow other process to re-install OIM 11g.