RMAN-08137: warning: archived log not deleted, needed for standby or upstream capture process archived log file name

I find the warning in archivelog RMAN backup log.


RMAN-08137: warning: archived log not deleted, needed for standby or upstream capture process archived log file name

Check the archivelog file showing in warning is shipped to standby database and applied in standby.
also
Check primary and standby databases are in sync and archivelog shipping and applying is happening properly for standby database and applying according to your archivelog deletion policy.

If any delay if shipping archivelogs or any delay in apply archivelogs in standby also causes this warning message.

You can safely ignore this warning if primary and standby are in sync or apply process is going fine.

example for archivelog deletion policies:

CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED TO ALL STANDBY;
CONFIGURE ARCHIVELOG DELETION POLICY TO SHIPPED TO ALL STANDBY;
CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED TO ALL STANDBY BACKED UP 1 TIMES TO DISK;