Semaphore? I thought that was men waving flags...
Some SSIS load packages failed this morning >
Error 121: "The semaphore timeout period has expired" (ERROR_SEM_TIMEOUT).
There is no one answer to this except to say that is a tcp/ip networking error.
Newsgroup posts on the issue range from antivirus software, network congestion and black hole routers. If anyone can be less vague, i'd love to hear your thoughts.
http://support.microsoft.com/kb/325487
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