Developer Documentation Library > Interviewer - Server > Administration and maintenance > Log files > Switching trace logging on and off
 
Switching trace logging on and off
If an activity fails to work as expected and you cannot see what the problem is from the standard log files, you can request logging at “trace level” to generate very detailed reports of what the activity has been doing. To do this, set the Filter key to 0 in the following locations in the registry:
HKEY_LOCAL_MACHINE\Software\SPSS\DimensionNet\Log
HKEY_LOCAL_MACHINE\Software\SPSS\mrInterview\3\Log
HKEY_LOCAL_MACHINE\Software\SPSS\MRPropertyManagement\2.0\Log
HKEY_LOCAL_MACHINE\Software\SPSS\MRPropertyManagement\2.0\Security\Auditing
HKEY_LOCAL_MACHINE\SOFTWARE\SPSS\WebApi\Log
If you are running 32-bit software on a 64-bit computer, the SPSS key might be in HKEY_LOCAL_MACHINE\Software\Wow6432Node instead of HKEY_LOCAL_MACHINE\Software.
You must make the change in all locations, because you cannot be sure which application will start the logging component. For consistency, make the change on all computers running the Interviewing and Accessories Services.
Trace logging writes large amounts of information to the log files, so turn it off after you have resolved the problem.: reset the Filter key to (decimal) 16 which is the default setting for this key. Make the change in all locations and on all computers.
Wait one minute for the settings to take effect.
Dialer trace logging
1 You can enable or disable trace logging for your dialer by updating the following HKEY_LOCAL_MACHINE\SOFTWARE\SPSS\mrInterview\3\Log\ registry values on your server:
Directory: Specify an location for your trace log files.
DialerTrace: If this DWORD Value does not exist, you must create it. This value controls when trace logging is enabled or disabled. 1 enables trace logging; 0 disables trace logging.
The trace log file name is determined by the type of dialer that is employed. For example, the trace log is named ProTSTrace.txt when a Pro TS dialer is used.
2 After updating the DialerTrace logging registry setting, reset IIS.
See also
Log files