💡 RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process

Cause:

 The archive logs seems that it is not yet applied in the standby database.
                        Select sequence# , applied from v$archived_log;

Action: Check the standby database and apply the logs manually and the start the deletion process.
              I can delete the archive logs by force using the below command.

      RMAN > delete noprompt force archivelog all;

But I don't want to delete the archives which are not applied in standby  so i'm changing the configuration

Solution:

RMAN> show all;
Old configuration:
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default

Change as Below:
RMAN> CONFIGURE ARCHIVELOG DELETION POLICY TO SHIPPED TO STANDBY;

new RMAN configuration parameters:
CONFIGURE ARCHIVELOG DELETION POLICY TO SHIPPED TO STANDBY;

new RMAN configuration parameters are successfully stored

RMAN-08591: WARNING: invalid archived log deletion policy

Now check the configuration:
RMAN> show all;

CONFIGURE ARCHIVELOG DELETION POLICY TO SHIPPED TO STANDBY;

Now I am able to delete those archivelogs now.

RMAN> delete noprompt archivelog all;

RMAN> crosscheck archivelog all;

Once I deleted those logs, I changed the rman configuration by the default one.

RMAN> CONFIGURE ARCHIVELOG DELETION POLICY CLEAR;
RMAN> Show all;