How to fix the Oracle error ORA-12341: maximum number of open mounts exceeded?

In this post, you’ll learn more about the Oracle ErrorORA-12341: maximum number of open mounts exceeded with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12341: maximum number of open mounts exceeded

Reason for the Error ORA-12341: maximum number of open mounts exceeded

The number specified on the OPEN_MOUNTS parameter in the parameter file exceeds the maximum allowed (255).

How to fix the Error ORA-12341: maximum number of open mounts exceeded ?

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

Change the value of this parameter so that it reflects the actual number of possible open mounts to secondary databases. This must be less than 255.