Symptoms
Consider the following scenario:
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You enable the AlwaysOn Availability Groups feature in Microsoft SQL Server 2012.
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You enable the Log Shipping feature on some databases that are in an AlwaysOn availability group.
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You have a monitor server to monitor the log shipping.
In this scenario, the backup job is running correctly. However, you receive the following error message:
Error: 14420, Severity: 16, State: 1
The log shipping primary database %s.%s has backup threshold of %d minutes and has not performed a backup log operation for %d minutes. Check agent log and logshipping monitor information.Cause
The issue occurs because the log_shipping_monitor_primary table is not updated when the sys.fn_hadr_backup_is_preferred_replica system stored function returns "0".
Resolution
After you apply this fix, the last_backup_file in the table log_shipping_monitor_primary column will be updated together with a dummy file name to resolve this issue.
The issue was first fixed in the following cumulative update of SQL Server.Cumulative Update 6 for SQL Server 2012 SP1 /en-us/help/2874879
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.