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Using Log Files to Troubleshoot
 Tivoli Environment

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oservlog gatelog epmgrlog lcfd.log      

The key publication is Maintenance and Troubleshooting Guide

Tivoli Management Framework provides several logs that are generated in response to system activities and resources in the Tivoli environment. By viewing these logs, you can begin to identify when, where, and why certain problems are occurring. These logs can help you pinpoint if there is a problem in the Tivoli environment, if the operating system is causing problems, or if there is a user error. These logs can provide a large amount of detail including listing each method called by applications in your Tivoli environment. Logs include the following data:

These logs can be found in the database directory that is located through the following variable names:

The key log files used by Tivoli are the following:

  1. $DBDIR/oservlog (TMR Server and Managed Nodes)
  2. $DBDIR/gatelog (gateways)
  3. $DBDIR/epmgrlog (TMR Server only)
  4. Install logs (Found in /tmp on UNIX and %DBDIR%\tmp for Windows)
  5. lcfd.log  (endpoint log)

View the epmgrlog, gatelog, and files to determine and investigate problems with endpoints.

Keep in mind that unlike the lcfd.log file, which is re-created each time the endpoint process starts, the epmgrlog and gatelog files grow indefinitely and must be truncated or archived on a regular basis.

For more information, see Using Log Files.

Endpoint log

The lcfd.log file, found on each endpoint in the lcf/dat directory, contains logging messages for upcall methods, downcall methods, and the login activities of the endpoint. You also can view this log file from the http interface. In addition, lcfd.log can have different levels of debugging information written to it. To set the level of debugging, use the lcfd command with the -dlevel option, which sets the log_threshold option in the last.cfg file. Set the log_threshold at level 2 for problem determination, because level 3 often provides too much information.

Of the three log files, the lcfd.log file is sometimes the most useful for debugging endpoint problems. However, remote access to the endpoint is necessary for one-to-one contact.

Endpoint log messages have the following format:

timestamp level app_name message

The message elements are as follows:

The default limit of the log file is 1 megabyte, which you can adjust with the lcfd (or command with the -D log_size =max_size option. The valid range is 10240 through 10240000 bytes. When the maximum size is reached, the file reduces to a size of approximately 200 messages and continues to log. Using Log Files discusses the epmgrlog, the gatelog, and the lcfd.log files in more detail.

In addition to these three log files, the following files help troubleshoot endpoint problems located on the endpoint:

Of these files, the last.cfg file can be useful in determining problems with an endpoint. The last.cfg file resides in the /dat subdirectory of the endpoint installation. It also can be viewed from the http interface. This file contains configuration information for the endpoint. The following example shows the contents of a last.cfg file:

logfile=C:\Program Files\Tivoli\lcf\dat\1\lcfd.log
config_path=C:\Program Files\Tivoli\lcf\dat\1\last.cfg
run_dir=C:\Program Files\Tivoli\lcf\dat\1
load_dir=C:\Program Files\Tivoli\lcf\bin\w32-ix86\mrt
lib_dir=C:\Program Files\Tivoli\lcf\bin\w32-ix86\mrt
cache_loc=C:\Program Files\Tivoli\lcf\dat\1\cache
cache_index=C:\Program Files\Tivoli\lcf\dat\1\cache\Index.v5

For more information about most of these attributes, see the lcfd command in the Tivoli Management Framework Reference Manual.

When you change endpoint configuration with the lcfd command, the last.cfg file changes. Therefore, you should not modify the last.cfg file. If you require changes, use the lcfd command to make any changes. However, running the lcfd command requires stopping and restarting the endpoint.

Another useful tool for endpoint problem determination is the output from the wtrace command. The wtrace command is useful for tracking upcall and downcall method failures. To learn more about the wtrace command, see Troubleshooting the Tivoli environment.

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