Oracle : Ошибка ORA-27028

"skgfqcre: sbtbackup returned error"
*Cause: sbtbackup returned an error. This happens when creating a backup
file during a backup operation.
*Action: This error is returned from the media management software which is
linked with Oracle. There should be additional messages which
explain the cause of the error. This error usually requires
contacting the media management vendor.

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