Deletion of SQL Profiler Trace files (.trc)

The .trc files are safe to delete.

.trc files generated by SQL Server in process of saving events to a physical file without using the Profiler client tool. Server-side tracing is enabled and controlled by using SQL Server system-supplied stored procedures and functions. With these system-supplied processes, you can identify what to trace, when to start and stop tracing, what traces are running, and view trace information stored in the trace file.

View the number of currently running traces :

SELECT count(*) FROM :: fn_trace_getinfo(default) WHERE property = 5 and value = 1

More detail about the running traces:

SELECT * FROM :: fn_trace_getinfo(default)

You can terminate a trace with the 'sp_trace_setstatus' stored procedure using the traceid:

EXEC sp_trace_setstatus 1, @status = 0
EXEC sp_trace_setstatus 1, @status = 2

Setting the status to 0 stops the trace Setting the status to 2 closes the trace and deletes its definition from the server

Good Luck!

If the trace files are no longer in use, then they should be fine to delete. I'd say someone was doing some troubleshooting of an application and forgot to delete the trace files when they were done.

A trace file would only be in use if the trace is still running. If the files are more than a day old then it's a safe bet that the trace is no longer running. If the trace IS running the file will be locked and you won't be able to delete it anyway.