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Oracle® Database Reference
11g Release 2 (11.2)

Part Number E25513-03
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BACKUP_TAPE_IO_SLAVES

Property Description
Parameter type Boolean
Default value false
Modifiable ALTER SYSTEM ... DEFERRED
Range of values true | false
Basic No

BACKUP_TAPE_IO_SLAVES specifies whether I/O server processes (also called slaves) are used by Recovery Manager to back up, copy, or restore data to tape. When the value is set to true, Oracle uses an I/O server process to write to or read from a tape device. When the value is set to false (the default), Oracle does not use I/O server process for backups. Instead, the shadow process engaged in the backup accesses the tape device.

Note:

You cannot perform duplexed backups unless you enable this parameter. Otherwise, Oracle returns an error. When this parameter is enabled, Recovery Manager will configure as many server processes as needed for the number of backup copies requested.

See Also: