The basic path to database consolidation is: Example 17-1 Determining Whether a Database Is a CDB The following simple query determines whether the database to which an administrative user is currently connected is a non-CDB, or a container in a CDB: SQL statement creates a PDB.
Operations that act on an entire non-CDB act in the same way on an entire CDB, for example, when using Oracle Data Guard and database backup and recovery.
By storing its own dictionary metadata, a PDB becomes easier to manage as a distinct unit, even when only one PDB resides in a CDB.
Benefits of data dictionary separation include the following: For the duration of its existence, a database is either a CDB or a non-CDB.
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