To unlock the OID superuser i.e. cn=orcladmin follow the below steps,
export the ORACLE_HOME, ORACLE_INSTANCE if your OID in stand alone mode then export the DOMAIN_HOME also, then go to ORACLE_HOME/ldap/bin and execute the command.
./oidpasswd connect=OIDDB unlock_su_acct=true
It will ask for password, enter the ODS schema password.
export the ORACLE_HOME, ORACLE_INSTANCE if your OID in stand alone mode then export the DOMAIN_HOME also, then go to ORACLE_HOME/ldap/bin and execute the command.
./oidpasswd connect=OIDDB unlock_su_acct=true
It will ask for password, enter the ODS schema password.