We are running Sql server 2005. This server has been running for over a year without any problems. There are no custom databases or scripts (Operations manager, WSUS, ACS databases)
Recently the ERRORLOG has started filling rapidly with the error:
spid26s An exception occurred while enqueueing a message in the target queue. Error: 15517, State: 1. Cannot execute as the database principal because the principal "dbo" does not exist, this type of principal cannot be impersonated, or you do not have permission.
This error is being posted several times a second.
All forums and web searches indicate that this occurs when a database is moved from one server to another and the SID of a user account changes, however we have not moved/imported/exported any databases or changed/added/deleted any users. Everything in that respect is still set the way it always has been.
The only clue I am getting is when I run an sp_who query and look for spid26 (or whatever is being reported at the time)
This shows:
spid 26 status: background loginname: sa dbname: master cmd: BRKR Task
If I am reading this correctly, then I cannot understand why the sa account is failing to login to the master database for the Broker when everything else is working.
Any suggestions?
My knowledge of SQL is limited, so if there is any other info required, let me know.
Thanks