Oracle : Ошибка 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.

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