ORA-20603: Updating timezone region of a target is not supported

Enterprise manager does not start after updating the database. The emdb.nohup has an ORA-20603: Updating timezone region of a target is not supported error message in it.

The problem

The timezones have been updated within the database.

Solution

As Oracle run:

$ORACLE_HOME/bin/emctl resetTZ agent

and follow the instructions.  You’ll need the sysman or sys password to make the changes.

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