RMAN-08591: WARNING: invalid archived log deletion policy

For one of database we were getting backup failure alerts where the backup was configured on standby database.

We saw below Error messsages in backup-log :

RMAN-08591: WARNING: invalid archived log deletion policy

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Cause: If archive log location is set to FRA, then there might be a chance of the deleting the archives automatically when the space pressure in FRA.

In that case at least one of the destination standby must be set as a "MANDATORY" destination.

Solution: To eliminate the RMAN warning message, at least one archive destination must be set as a mandatory destination.

Steps : 

1. Log in to the broker command line utility

[oracle@host1 log]$ dgmgrl /
DGMGRL for Linux: Version 12.1.0.2.0 - 64bit Production
Copyright (c) 2000, 2013, Oracle. All rights reserved.
Welcome to DGMGRL, type "help" for information.
Connected as SYSDG.
DGMGRL> show configuration

Configuration – primdb1
  Protection Mode: MaxPerformance
  Members:

  primdb1 - Primary database
    bcpdb1 - Physical standby database

Fast-Start Failover: DISABLED

Configuration Status:
SUCCESS   (status updated 7 seconds ago)

2. For the standby site check the "Binding" property

DGMGRL> show database verbose bcpdb1

Database - bcpdb1

  Role:               PHYSICAL STANDBY
  Intended State:     APPLY-ON
  Transport Lag:      11 minutes (computed 0 seconds ago)
  Apply Lag:          0 seconds (computed 0 seconds ago)
  Average Apply Rate: 625.00 KByte/s
  Active Apply Rate:  523.00 KByte/s
  Maximum Apply Rate: 18.62 MByte/s
  Real Time Query:    ON
  Instance(s):
    bcpdb1

Properties:

----------
----------


Binding        = 'optional'

----------
----------

3. Set the "binding" Property as - MANDATORY
        
//This parameter controls whether the destination is mandatory or not

DGMGRL> edit database bcpdb1 set property Binding='mandatory';

Property "binding" updated

DGMGRL> exit

Once the broker configuration has set a standby site as a mandatory destination, the RMAN configuration can be altered to set the archivelog deletion policy to applied on standby.

RMAN> configure archivelog deletion policy to applied on standby;

Once the broker configuration has set a standby site as a mandatory destination, then RMAN will not report this error again.

Reference: Data Guard Physical Standby - RMAN configure archivelog deletion policy reports RMAN-08591 (Doc ID 1984064.1)

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