How to fix the Oracle error ORA-01100: database already mounted?

In this post, you’ll learn more about the Oracle ErrorORA-01100: database already mounted with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01100: database already mounted

Reason for the Error ORA-01100: database already mounted

A database is already mounted in this instance.

How to fix the Error ORA-01100: database already mounted ?

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

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