Database Oracle21c
Oracle 21c has only CDB-PDB Architecture
The non-CDB architecture was deprecated in Oracle Database 12c (12.10.2). It is desupported in Oracle Database 20c. Oracle Database 20c was the first CDB-PDB release. Now there is no Oracle Database 20c. Hence, Oracle 21c will be now the first CDB-PDB only release. Oracle Database 21c is the first Oracle database release Read more…