Dynamic Modification Methods


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Administering a BEA Tuxedo Application at Run Time

As an administrator, you must ensure that once an application is up and running, it continues to meet the performance, availability, and security requirements set by your company. The BEA Tuxedo system allows you to make changes to your configuration without shutting it down. Without inconveniencing your users, you can do the following:

Modify existing entries in your configuration file, that is, make changes to TUXCONFIG.
Add components to your application by adding entries for them to your configuration file.
Make temporary changes to an application by advertising, unadvertising, suspending, or resuming services, and changing service parameters (such as LOAD and PRIORITY).
Note: To modify the configuration file for a running application, you must do one of the following:
- Run the tmconfig(1) command (described on the tmconfig, wtmconfig(1) reference page), which allows you to modify your configuration file dynamically.

Thus, you can adjust your system to reflect either current or expected conditions by making either permanent or temporary changes to an application. Temporary changes are reflected in the bulletin board only. Permanent changes are made by modifying the TUXCONFIG file. Because TUXCONFIG is a binary file, however, you cannot edit it through a simple text editor.

Tools for Modifying Your Application

To help you dynamically modify your application, the BEA Tuxedo system provides the following three methods: the BEA Administration Console, command-line utilities, and the Management Information Base (MIB) API. These tools help you respond quickly and efficiently to the need for changes in your application resulting from changing business needs or failure conditions. Use them to keep your application performing fast, well, and securely.

Dynamic Modification Tools

BEA Administration Console-a Web-based graphical user interface (GUI) you can use to dynamically configure your application. You can display and change configuration information, determine the state of each component of the system, and obtain statistical information about items such as executed requests and queued requests.
Command-line utilities- Most of the functionality needed for dynamic modification is provided by two commands: tmadmin and tmconfig. tmadmin is a shell-level command with over 70 subcommands for performing various administrative tasks, including dynamic system modification. tmconfig is a shell-level command that you can use to add and modify configuration entries while your system is running.
MIB API-a Management Information Base API that enables you to write your own programs to monitor your system and make dynamic changes to your system.

You always have the choice of these three tools for any administrative task. For dynamic modification or reconfiguration, however, we recommend the BEA Administration Console for its ease of use. Full descriptions of all the features in the Administration Console are available through the Help utility provided with the GUI.

If you prefer to work on the command line, however, simply run the tmadmin or tmconfig command.

Note: For lists of configuration parameters and reconfiguration restrictions, see tmconfig, wtmconfig(1) in BEA Tuxedo Command Reference and TM_MIB(5) in BEA Tuxedo File Formats and Data Descriptions Reference.