Database Administration (MOSC)

MOSC Banner

I would like to switch "LOCAL UNDO ON" for our CDB. Does it impact our existing PDBs?

in Database Administration (MOSC) 5 commentsAnswered ✓

Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production Version 19.14.0.0.0


Our CDB has an UNDO TABLESPACE with name "UNDOTBS1".

LOCAL UNDO is currently OFF.

Our PDBs have been migrated from 11g and have an UNDO TABLESPACE with name "UNDOTBS1" as well. They use they own datafiles.


Can I simply switch undo on connected to the CDB in this fashion:

SHUTDOWN IMMEDIATE;

STARTUP UPGRADE;

ALTER DATABASE LOCAL UNDO ON;

SHUTDOWN IMMEDIATE;

STARTUP;


I would not like to touch our existing PDBs.

Will the PDB's UNDO TABLESPACE still work or does it need a drop and recreation?


Many Thanks,

Uli

Howdy, Stranger!

Log In

To view full details, sign in to My Oracle Support Community.

Register

Don't have a My Oracle Support Community account? Click here to get started.

Category Leaderboard

Top contributors this month

Instructions for posting

×

1. Select a discussion category from the picklist.


2. Enter a title that clearly identifies the subject of your question.


3. In the body, insert detailed information, including Oracle product and version.


Please abide by the Oracle Community guidelines and refrain from posting any customer or personally identifiable information (PI/CI).


Cloud / Fusion customers - Our Cloud community has moved! Please go to Cloud Customer Connect .


New to My Oracle Support Community? Visit our Welcome Center

MOSC Help Center