OLT Preferences - OLT settings

The settings on this page determine the behavior of the OLT viewer and tell the viewer how to communicate with the OLT server.

Online mode

Track new events
By default, OLT draws events on the trace as they occur, and scrolls to show the most recent event. If you deselect Track new events, the viewer does not scroll to the most recent event. Note that constant scrolling on a large trace can slow down the program.

The fill percentage is the amount of display area that the OLT viewer fills each time it scrolls, leaving the remaining area empty for incoming events. The default is 50 percent of the window.

Step-by-step debug mode
This is the default debug mode. As your application runs, the OLT suspends at each debuggable server event, which allows you to use the Distributed Debugger to step into it.

If you uncheck this box, OLT will only suspend at the events identified in the OLT breakpoint list, and the Debugger will attach only to these events.

Activate circular event log
When this option is deselected (as it is by default), OLT continues to collect and store events indefinitely. To save disk space, or to analyze only the more recent events in a long-running process, you may wish to impose a maximum size on event files. To do so, select the checkbox, and enter the number of most recent events to be saved (the default is 100,000).

Note: Any changes to the values below take effect when you restart the OLT.

OLT server host name
The host name of the machine on which the OLT server is running (the default is the host name of the current workstation). If your OLT server is not running on the same machine as the viewer, you must change this host name value to point to the machine where the OLT server is running.

OLT server TCP/IP port
The port where the OLT server is listening (the default port is 2102). You need to change this value only if port 2102 is already in use. This is more common in a multi-user environment such as AIX.

OLT viewer TCP/IP port
The port where the OLT viewer connects to the OLT server (the default port is 2202). You need to change this value only if port 2202 is already in use. This is more common in a multiuser environment such as AIX.

OLT read/save file path
The default directory on the machine running the OLT server where your trace files are saved to, and where OLT looks for trace files to open.

The default location is /tmp.
The default location is the directory specified by the %DER_DRIVER_PATH%\temp variable (for example, x:\IBMDebug\temp).