RMAN06820: WARNING: FAILED TO ARCHIVE CURRENT LOG AT PRIMARY

RMAN archivelog backup at the standby site is throws the following errors

Logfile Details:
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RMAN06820: WARNING: failed to archive current log at primary database 
ORACLE error from target database:
ORA17629: Cannot connect to the remote database server 
ORA-17627: ORA-00942: table or view does not exist

But the rest of the backup actually complete successfully.

CAUSE:
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11.2.0.4 onward as per 'unpublished' Bug 8740124, we now include the current standby redo log as part of an RMAN archivelog backup at the standby site. This is achieved by forcing a log switch at the primary site. However, the connection to the primary failed when attempting to do so.
This is due to this bug:
Bug 17580082 ACTIVE STANDBY RMAN06820: WARNING: FAILED TO ARCHIVE CURRENT LOG AT PRIMAR

Workaround:
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Do not use operating system authentication to login with RMAN. Use a username and password.
That is, do not use just the "/" (operating system authentication) connect to the standby database:
$ rman target /
Connecting as 'rman target /'
# it gets the sys user but not the password and so, it does NOT mean it is being explicitly specified to connect as sysdba.
Instead put in the username and password for the SYSDBA user:
$ rman target sys/password@stby
Connecting as 'rman target sysdba_user/password@stby'
Note: The password, within the password file, for the primary and standby should be identical.

For more details please look at the Doc ID: 1616074.1


Happy Learning :)