Failed to send an environment change notification to a log shipping partner node while revalidating the login???

Question

Hi All,
Recently I received the following error message in my SQL instance (Microsoft SQL Server 2012 - 11.0.5532.0 (X64)) :-
23/02/2015 5:09:05 PM
Error: 18456, Severity: 14, State: 51.
Login failed for user 'webapp'. Reason: Failed to send an environment change notification to a log shipping partner node while revalidating the login. [CLIENT: 192.168.82.18]
 23/02/2015 5:09:05 PM
Error: 18056, Severity: 20, State: 51.
The client was unable to reuse a session with SPID 98, which had been reset for connection pooling. The failure ID is 51. This error may have been caused by an earlier operation failing. Check the error logs for failed operations immediately before this
error message.
I am using database mirroring instead of log shipping actually but why there's some log shipping related error message coming out? Is it some kind of bug error message?  I am just wondering and hope can get some little help about this.
Thanks and highly appreciated.
Best Regards,
              Han

Answer 1

Hi Harn,
According to the error message, as my understanding, the issue could be due to that the login 'webapp' has no access to the default database which is configured in log shipping. The database is offline or removed. You could run the command (select * from
msdb.dbo.log_shipping_primary_secondaries) to verify if that database is configured in log shipping. Another cause is that parallel execution occupies multiple worker threads. When you have many parallel executions, the number of available worker threads might
run out and you fail to login. Please help to post complete SQL Server error log for analysis.
To work around the issue, you could follow the two solutions below.
1.Change the default database for the login 'webapp' according to the following article:
https://msdn.microsoft.com/en-us/library/ms189828.aspx
2.Reduce the 'max degree of parallelism' as the following example.
exec sp_configure 'max degree of parallelism', 4;
GO
RECONFIGURE WITH OVERRIDE;
GO
Regards,
Michelle Li