Classic User's Guide

Product overview
OMEGAMON for MVS, an autonomous component of IBM® Z OMEGAMON AI for z/OS, provides real-time performance data on the z/OS operating system to the IBM Z OMEGAMON AI for z/OS product.
Configuring modes
You can run OMEGAMON® for MVS in four different optional processing modes.
Operational commands
The following topics describe some INFO-line and immediate commands that control OMEGAMON, as well as some generic operands.
Screen spaces
Through its powerful screen space feature, OMEGAMON stores, recalls, and invokes a set of commands. IBM ships OMEGAMON with a number of predefined screen spaces, which are designed to give you detailed information by category.
The User Profile Facility
Profiles control the characteristics of an active OMEGAMON session.
Exception analysis
Exception analysis produces a warning message when a parameter goes above or below a specified threshold. To help you decide upon the appropriate response, OMEGAMON provides suggested screens for each exception.
General system information
System commands display information about system-wide utilization.
CSA Analyzer
The CSA (Common Storage Area) Analyzer is an OMEGAMON feature that monitors and analyzes common storage usage and growth in the following areas: common service area (CSA), extended common service area (ECSA), system queue area (SQA), and extended service queue area (ESQA).
Device information
Device information consists of several information areas.
Address space information
Many programs in the z/OS® operating system can execute at the same time, such as batch jobs, TSO sessions, and started tasks. In the language of z/OS, all of these executing programs are referred to as address spaces.
Authorized commands
Authorized commands are sensitive in nature because they can alter data in storage and can display data from restricted storage areas. Misuse of authorized commands can jeopardize your system and the integrity of your data. Use them with caution.
Degradation Exception Analyzer (DEXAN)
The Degradation Exception Analyzer (DEXAN for MVS) shows degradation and its effect on productivity. Use this data to diagnose and solve performance problems or to increase your system’s productivity. Use DEXAN to examine degradation for individual address spaces (or jobs) or the entire system.
Impact analysis
OMEGAMON impact analysis feature is a diagnostic tool that helps to solve problems caused by workload contention.
Applications tuning
The applications tuning facility monitors applications running in an address space and shows CPU resource consumption.
Automating and logging features
OMEGAMON can automatically invoke displays, initiate action, and log information in response to exception conditions (that is, if an exception message is triggered), or at specific times during the day. When the sequence is finished, OMEGAMON then resumes normal operation, all without manual intervention.

Parent topic: Classic