Non-CDB architecture of Oracle databases is DEPRECATED since Oracle Database 12.1.0.2

Please find an updated blog post here:

as the text in the Database Upgrade Guide has been changed as well.


non-CDB deprecated in Oracle 12.1.0.2

What does this mean?

Deprecation first of all does not mean “desupported”. It means in this case that you of course can have still stand-alone Oracle databases as you know the architecture from previous releases. But you can also have a single-tenant deployment (a CDB with one PDB – no Multitenant license required) or multitenant databases (a CDB with up to 252 PDBs – Multitenant Option license required).

But in a future Oracle release single-tenant and multitenant databases only may be allowed. Right now there’s no information available when this might happen.Β 

Which features are not supported at the moment?

  • Database Change Notification
  • Continuous Query Notification (CQN)
  • Client Side Cache
  • Heat Map
  • Automatic Data Optimization
  • Oracle Streams
  • Oracle Fail Safe
  • Flashback Pluggable Database (Flashback Database works but will flashback CDB$ROOT including all PDBs)
  • DBVERIFY
  • Data Recovery Advisor (DRA)
  • Flashback Transaction Backout

–Mike

From the Upgrade Guide:
By deprecate, we mean that the feature is no longer being enhanced but is still supported for the full life of the 12.1 release. By desupported, we mean that Oracle will no longer fix bugs related to that feature and may remove the code altogether. Where indicated, a deprecated feature may be desupported in a future major release

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