In order to my experience as the oracle user, I have updated .bashrc with the appropriate configuration settings.
Ran the following command as the oracle user:
cat >>.bashrc <<DONE # Set up environment for Oracle products export ORACLE_BASE=/opt/app/oracle # Set up environment for OMS export ORACLE_HOME=${ORACLE_BASE}/middleware/oms export PATH=${PATH}:${ORACLE_HOME}/bin # Set up environment for OPMN export ORACLE_INSTANCE=${ORACLE_BASE}/gc_inst/WebTierIH1 export PATH=${PATH}:${ORACLE_INSTANCE}/bin DONE