To identify if OCM is installed or configured for databases
cd $ORACLE_HOME/ccr/bin and locate file emCCR, if emCCR exists, then OCM is configured.
If emCCR doesn’t exists then OCM is installed but not configured.
If you need to configure OCM then follow OCM Quick start Guide.
If you don’t need OCM then remove OCM from the database using the SQL Script
Source: MOS Doc ID: 736837.1 and OCM quick start guide