Where did these dbo._trace_ Stored Procedures come from? I'm looking at some databases at a new company and one in particular has a bunch of Stored Procedures named dbo._trace_*

SQL Default Trace is ON, but I'm not sure if these are related, and if they were, I don't know why I would see them in one database on the server but not in other databases on that server.
Look at the stored procedure contents.
It they begin like the following example, they could be server side traces someone has created.

Create a Queue declare @rc int declare @TraceID int declare @maxfilesize bigint set @maxfilesize = 100 Create the trace exec @rc = sp_trace_create @TraceID output, 0, N’E:\demo\demotrace’, @maxfilesize, NULL if (@rc != 0) goto error --Set the events declare @on bit set @on = 1 exec sp_trace_setevent @TraceID, 10, 15, @on exec sp_trace_setevent @TraceID, 10, 31, @on exec sp_trace_setevent @TraceID, 10, 8, @on