Common user/role in cdb - oracle database script

Common user/role in CDB - Oracle Database Script.

---A user that is present in both root container and PDB is known as common user. User need to be created after connecting to CDB root.  create user c##aodba identified by aodba container=all;  -- Similar to user, common role we can create in CDB root.  Create role C##DBAROLE;