Do you remember? At OOW 2019 in San Francisco, we announced that Oracle Database 20c will be the first CDB-only database release. But at this time we didn’t present this in written form. We told you, once the Oracle Database 20c documentation is available, you will see it. Oracle Database 20c – The first CDB-only release.
Oracle 20c is the first CDB-only release
Typically you will find deprecation and desupport notes in the Database Upgrade Guide. And there you will see also this note:
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