How to fix the Oracle error ORA-30021: Operation not allowed on undo tablespace?

In this post, you’ll learn more about the Oracle ErrorORA-30021: Operation not allowed on undo tablespace with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30021: Operation not allowed on undo tablespace

Reason for the Error ORA-30021: Operation not allowed on undo tablespace

This operation is not allowed on undo tablespaces

How to fix the Error ORA-30021: Operation not allowed on undo tablespace ?

You can fix this error in Oracle by following the below steps

Check the tablespace name and reissue command if necessary