ORA-01507: database not mounted

admin

ORA-01507: database not mounted
Cause: A command was attempted that requires the database to be mounted.
Action: 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.