Syntax for the TraceSet_project() procedure

The syntax for using the TraceSet_project() procedure is as follows: 
EXECUTE PROCEDURE TraceSet_project(
          "traceFile",
          traceThreshold
);
traceFile
The path and file name of the trace output file for the current database server session, surrounded by quotation marks. If you do not specify a file name, the default file, /tmp/session_ID.trc, is created. If you specify a file name and then execute TraceSet_project() again during the same session without specifying a file name, the file name is not changed.
traceThreshold
The trace threshold for the current database server session. There are three possible values:
0
Tracing is disabled.
> 0
Tracing is enabled and the threshold is set to that number.
< 0
The tracing threshold is not changed.