How to fix the Oracle error ORA-12455: internal error in Label Security MMON cleanup task?

In this post, you’ll learn more about the Oracle ErrorORA-12455: internal error in Label Security MMON cleanup task with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12455: internal error in Label Security MMON cleanup task

Reason for the Error ORA-12455: internal error in Label Security MMON cleanup task

An internal error occurred in the Label Security MMON cleanup task.

How to fix the Error ORA-12455: internal error in Label Security MMON cleanup task ?

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

Contact Oracle Customer Support.