How to fix the Oracle error ORA-12335: database (link name string) is not open?

In this post, you’ll learn more about the Oracle ErrorORA-12335: database (link name string) is not open with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12335: database (link name string) is not open

Reason for the Error ORA-12335: database (link name string) is not open

You attempted to close a database that is not open.

How to fix the Error ORA-12335: database (link name string) is not open ?

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

The database is closed; you can proceed with dismounting it.