How to fix the Oracle error ORA-01154: database busy. Open, close, mount, and dismount not allowed now?

In this post, you’ll learn more about the Oracle ErrorORA-01154: database busy. Open, close, mount, and dismount not allowed now with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01154: database busy. Open, close, mount, and dismount not allowed now

Reason for the Error ORA-01154: database busy. Open, close, mount, and dismount not allowed now

Some operation is in progress that expects the opened/mounted state of this instance to remain the same.

How to fix the Error ORA-01154: database busy. Open, close, mount, and dismount not allowed now ?

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

Wait for the operation to complete then retry. If attempting to do a shutdown, SHUTDOWN ABORT will work. If this is a shutdown of a standby database that is operating in NO DATA LOSS mode, you must shutdown the primary database first.