Overview

About this Chapter

This chapter introduces the Realtime Monitor and describes the screens that you can request through the monitor. During a Realtime Monitor session, use the windowing commands and control keys described in Introduction to Performance Monitor to manipulate your screen displays.

What the Realtime Monitor Does

The Realtime Monitor captures and displays information describing the use of system resources of the current or remote Central Version. The Central Version is specified by its job name. The following information is displayed:

System and user transaction activity
System and user task activity
Database access activity
Database I/O and journal driver activity
Communication-line and terminal activity
Buffer use
Journal use
Scratch area use
Storage-pool use
Program-pool use
SQL activity

The Realtime Monitor is either a conversational or pseudo-conversational task. In either case, it automatically refreshes the screen with current statistics. This information is drawn directly from run-time control blocks maintained by the DC/UCF system at the time of the request.

Uses and Users

The Realtime Monitor is typically used by DCAs, DBAs, operators, and system programmers to isolate problem areas in system-resource utilization.

Problem-Solving

This chapter also provides information that you can use to help alleviate problems you detect by using the Realtime Monitor. If you detect a problem with your system, perform the following steps:

Try to isolate the applications that are heavy users of the problem resource. For example, storage-pool problems can be caused by an application that neglects to release acquired storage.
If Step 1 fails to correct the problem, increase the availability of the resource. For example, to solve storage-pool problems, you might need to expand the storage pool.