ars_SetLogging(ctrl, logTypeMask, fileName)This function activates or deactivates client-side logging of API, Filter, SQL or Plugin actions.
The fileName parameter is optional. If you specify a file name, the messages
    are appended to that file. If fileName is omitted, then the log messages are
    appended to $ars_errstr.
   
The logTypeMask parameter allows you	to specify what type(s) of activities
	will be logged: 
	
Example:
  # start filter and sql logging
  # (the logfile gets opened for appending)   
  ars_SetLogging( $c, ARS::AR_DEBUG_SERVER_FILTER | ARS::AR_DEBUG_SERVER_SQL, 
          "/var/log/filter_sql.log" ) ||
		  die ("SetLogging (start): $ars_errstr");
 
  # call any ARS API function
  my $id = ars_CreateEntry( $c, "User", 101 => "TestUser", 109 => 1 );
  
  # stop logging (specify logTypeMask = 0 and no file)
  # (the logfile gets closed)   
  ars_SetLogging( $c, 0 ) ||
		  die ("SetLogging (end): $ars_errstr");
      
	If SQL and Filter logging do appear as not working, it may be because the the user is not a member of the "client-side logging group." The client-side logging group can be configured via Remedy Admin Tool (menu "File -> Server Information", tab "Log Files") or using the ars_SetServerInfo function (server option ARS::AR_SERVER_INFO_DEBUG_GROUPID).