Troubleshooting

This section describes how to set about diagnosing common problems that can occur with running applications in Enterprise Server and gives some advice about overcoming them.

Failures fall into the following categories:

• Incorrect output (an application or system function produces the wrong results or exhibits unexpected behaviors). These include application abends.
• Unexpected system terminations. Either the whole enterprise server terminates or a subsystem (support process) terminates.
• System loops. These include application loops and enterprise server subsystem loops. They are characterized by an abnormal accumulation of CPU time by an enterprise server process and may display the same external symptoms as a system hang.
• System hangs. Any problem where the enterprise server appears to stop responding to its clients (except for loops).

  This can also be the result of problems with inter-system communications.