![[z/OS]](../images/ngzos.gif)
Troubleshooting using WebSphere variables
Troubleshooting problems can be performed by changing certain variables in your application environment.
Before you begin
- Configuration variables may be set on a cell, node, or server
level.
- Variable values set on a cell level apply to all servers in all nodes in the cell, unless a different value for the same variable is set on a node or server level. Variable settings on a node or server level override values for the same variable set at the cell level.
- Variables set on a node level apply to all servers in the node, unless a different value for the same variable is set on the server level. Variable settings on a server level override values for the same variable set at the node or cell level.
- Variables set on a server level apply only to the specific server, not to any other servers in the same node or cell.
Note: When you are diagnosing particular problems, you are most likely to alter variable values on a server level, for a particular server. Specifying variable values on the server level affects both the controller and servant regions. - You may use scripting interfaces, instead of the administrative console, to alter configuration variable values.
- These variables allow you to control:
- Output destinations and characteristics for the error log, and for CTRACE buffers, data sets and the external writer.
- Trace buffers, data sets, and the content of trace data.
- Types of dumps to be requested.
- Timeout values for system and application behavior.
About this task
- When you first customize and verify WebSphere Application Server for z/OS installation, or
- When you test application workloads in a test environment, or
- when you encounter a problem, and need to collect more diagnostic data.
Procedure
- Click Environment -> Manage WebSphere Variables in the console navigation tree.
- On the WebSphere Variables page, select Server as the scope of the variable setting, and click Apply.
- On the WebSphere Variables page, click New.
- On the Variable page, specify a name and value for the variable. So other people can understand what the variable is used for, also specify a description for the variable. Then click OK.
- Verify that the variable is shown in the list of variables.
- Save your configuration.
- To have the configuration take effect, stop the server and then start the server again.