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ORA-01228:

SET DATABASE option required to install seed database
Cause: The SET DATABASE option was not included in the CREATE CONTROLFILE command when installing a seed database. The database does not have a database ID because it is intended to be installed at multiple sites, and each site needs to be a different database with its own database id. Both the SET DATABASE and RESETLOGS options must be specified to create the control file for this database.
Action: Resubmit command with the SET DATABASE and RESETLOGS options.