Windows 7 ODBC trace doesn't create log file (IBM Integration Bus 9, IIB)

If you followed the steps in ODBC trace for WebSphere Message Broker or IBM Integration Bus to turn on ODBC Trace in Windows and didn't find a trace file created in the path you specified, look for an sql.log file in C:\Windows\Temp. Windows may be ignoring your path (it was my case).

Source: ODBC Tracing on Windows Creates No File or Empty File