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proper12 asked

Trace Flag T3688 not working.

Added trace flag -t3688 to the sqlserver instance startup parameter. Restarted the instance but the trace start and trace stop events are still showing in the sql error log. I have confirmed that the trace is in place. Not working on Windows server 2012 with SQL server 2012 11.0.3437. Windows server 2008 with SQL server 2008R2 10.50.4000.
trace-flags
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If you run DBCC TRACESTATUS what is returned.
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Make sure the "T" is upper case "Important When specifying a trace flag with the -T option, use an uppercase "T" to pass the trace flag number. A lowercase 't' is accepted by SQL Server, but this sets other internal trace flags that are required only by SQL Server support engineers." http://msdn.microsoft.com/en-us/library/ms190737.aspx
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I entered the Trace Flag as -T3688 but the trace start and trace stop events are still being logged in the sql error log.
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CirqueDeSQLeil answered
With prior versions, it required an update to the latest SP. Apply SP2 and see if that helps.
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