How to fix the Oracle error ORA-12342: open mounts exceeds limit set on the OPEN_MOUNTS parameter?

In this post, you’ll learn more about the Oracle ErrorORA-12342: open mounts exceeds limit set on the OPEN_MOUNTS parameter with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12342: open mounts exceeds limit set on the OPEN_MOUNTS parameter

Reason for the Error ORA-12342: open mounts exceeds limit set on the OPEN_MOUNTS parameter

The number of currently open mounts exceeds the value you specified on the OPEN_MOUNTS parameter.

How to fix the Error ORA-12342: open mounts exceeds limit set on the OPEN_MOUNTS parameter ?

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

Increase the value of the OPEN_MOUNTS parameter so that it accommodates the maximum possible number of open mounts to secondary databases.