Error Data Protector 9 with Oracle RMAN integration

Hi, this error occurs randomly when the Oracle integrated backup copy is run with Data Protector

 

MAN-08205: datafile changes, starting full resync of recovery catalog

RMAN-08236:    1 datafile resized

RMAN-08004: full resync complete

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03009: failure of allocate command on dev_0 channel at 12/19/2016 17:00:32

ORA-19554: error allocating device, device type: SBT_TAPE, device name:

ORA-27211: Failed to load Media Management Library

Additional information: 3983

 

Recovery Manager complete.

[Major] From: xxxxxxx "xxxxxxx"  Time: 12/19/16 17:00:32

      External utility reported error.

RMAN PID=15551

[Major] From: xxxxxxxxx "xxxxxxx"  Time: 12/19/16 17:00:32

      The database reported error while performing requested operation.

 

regards