OMEGAMON
IBM's family of monitoring tools that show, in real time, how z/OS, CICS, DB2, IMS and MQ are performing.
Also written IBM OMEGAMON, MainView, SYSVIEW, performance monitor
OMEGAMON is a family of IBM monitoring products. There is a version for z/OS itself and versions for CICS, DB2, IMS, MQ, storage and networks. Each one shows what is happening in that area right now, and keeps history so people can look back at a problem.
For CICS, it might show every running task, how long each has taken and what it is waiting for. For DB2, it shows threads, locks and the most expensive SQL. For z/OS, it shows which address spaces are using the most processor time and which are waiting.
Monitors also raise alerts, for example when response times go above a threshold or a region reaches its task limit, so support staff hear about a problem before users report it.
Other vendors offer similar products, such as BMC's MainView and Broadcom's SYSVIEW, and a site usually has one of them. Whichever it is, production support and performance staff spend much of their time in it, and learning to read its main screens is part of joining those teams.
Where can I learn this hands-on?
Right here, at ZedBank. You take a junior job at a simulated bank and learn each part of the work by doing it, with Zed beside you. There's nothing to install.
Start at ZedBankRelated
- RMFResource Measurement Facility: the z/OS tool that measures how busy the system is and shows which work is waiting for what.
- Production supportKeeping live systems running: diagnosing failures, fixing what broke, and getting the service back.
- CICSThe transaction manager that runs online mainframe applications, and the software behind a great many screens bank staff use.
- DB2 for z/OSIBM's relational database on the mainframe, where a great deal of the world's banking and insurance data is stored.
- WLMWorkload Manager: the part of z/OS that decides which work gets the processor, memory and disk access first, based on goals the site sets.
- System automationSoftware that watches system messages and acts on them automatically, such as starting tasks in order or restarting one that fails.