How to fix the Oracle error ORA-01507: database not mounted?

In this post, you’ll learn more about the Oracle ErrorORA-01507: database not mounted with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01507: database not mounted

Reason for the Error ORA-01507: database not mounted

A command was attempted that requires the database to be mounted.

How to fix the Error ORA-01507: database not mounted ?

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

If you are using the ALTER DATABASE statement via the SQLDBA startup command, specify the MOUNT option to startup; else if you are directly doing an ALTER DATABASE DISMOUNT, do nothing; else specify the MOUNT option to ALTER DATABASE. If you are doing a backup or copy, you must first mount the desired database. If you are doing a FLASHBACK DATABASE, you must first mount the desired database.