How to fix the Oracle error ORA-12721: operation cannot execute when other sessions are active?

In this post, you’ll learn more about the Oracle ErrorORA-12721: operation cannot execute when other sessions are active with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12721: operation cannot execute when other sessions are active

Reason for the Error ORA-12721: operation cannot execute when other sessions are active

This command can only be run when there are no other sessions active

How to fix the Error ORA-12721: operation cannot execute when other sessions are active ?

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

Ensure there are no other connections to the database

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