(ZOS) System controls: Best practices for using system controls

Use this information as the best way to configure system controls.

• We have the option of using a z/OS system logger log stream as the product error log. The ras_log_logstreamName property identifies which log stream we want to use for the error log; it has no default setting. If we do not use a log stream, however, messages that usually appear in the error log are directed to server's job log.
• We have the option of directing trace output to SYSPRINT or buffers. The ras_trace_outputLocation property controls the location of trace output. The default values for this property are SYSPRINT for client applications, and buffers to all other processes. Although we can change the default for other processes from buffers to SYSPRINT, performance is better when we use buffers.

• Use the Resource Measurement Facility (RMF™) to view status information that might indicate potential problems. The product uses Workload Manager (WLM) services to report transaction begin-to-end response times and execution delay times, which might indicate that changes are required for timeout values or tuning controls.

Set up the error log

Workload management (WLM) for z/OS