Verifying the CICSplex control settings and saving the updated SLA
definitions
The CICSplex control settings determine the workload-management system
your site is using to monitor its SLA compliance and also how often the OMEGAMON XE for CICS on z/OS agent
will accumulate the SLA data and send it to the Tivoli Enterprise Monitoring Server for processing and
display by the Tivoli Enterprise Portal. When you have set the control parameters as appropriate,
you are ready to activate your CICSplex's SLA environment. To set these values
and activate your current SLA definitions, complete these steps:
- If not already selected, select the CICSplex icon within the CICSplex—SLA
window's left pane:
.
The right
pane changes to show your installation's current CICSplex—Control settings.
Figure 22. The CICSplex control settings within the CICSplex—SLA window
- Within the CICSplex—Control pane, first select the source of the
workload-management rules you want to use, either z/OS's native z/OS workload
manager or the workload manager provided with OMEGAMON XE for CICS on z/OS or both.
- z/OS WLM
- Enables you to monitor your SLA environment using the workload manager
native to z/OS. The z/OS workload manager balances workloads across all z/OS
computing resources, including CICS regions, to prevent bottlenecks.
Notes:
- If you select the z/OS WLM, the service policies, workloads, and service
classes you create using the CICS SLA view are ignored. OMEGAMON XE for CICS on z/OS instead
uses the rules defined for the z/OS workload manager.
- If your site chooses the z/OS workload manager when monitoring its CICS
service-level compliance, this is the only procedure you need complete to
activate it.
- OMEGAMON WLM
- OMEGAMON XE for CICS on z/OS offers its own service-level analysis based on workload definitions
similar to those provided by the z/OS workload manager. Using the CICS SLA
view, you can define your own service policies, workloads, and service classes
and activate a service policy to report on the performance of CICS transactions.
Benefits of the OMEGAMON WLM:
- It provides similar function in collecting service-level data when your
installation is not running the z/OS workload manager in goal mode.
- It reports service-level data collected by OMEGAMON XE for CICS on z/OS in a manner similar
to the z/OS workload manager.
The service-level analysis capabilities native to OMEGAMON XE for CICS on z/OS help
you ensure SLA compliance without requiring the assistance of the system programmer
who configures and maintains your site's z/OS workload manager, nor does it
require that the z/OS workload manager even be active. The OMEGAMON workload
manager makes ensuring CICS SLA compliance independent of the z/OS workload
manager and its WLM definitions.
Unlike the z/OS workload manager, the
native OMEGAMON workload manager does not perform workload balancing. Other
differences:
- The OMEGAMON workload manager does not support velocity-goal definitions.
Velocity goals do not apply to CICS transactions.
- The OMEGAMON workload manager does not support definition of different
periods.
- Auto
- Provides service-level analysis using first the z/OS and then the native
OMEGAMON workload managers. OMEGAMON XE for CICS on z/OS's workload-summarizer component ensures
it can communicate with the z/OS WLM and get a copy of its service classes
and goals. If for any LPAR the z/OS definitions cannot be obtained, OMEGAMON XE for CICS on z/OS uses
the OMEGAMON service classes and goals.
- Set the Collection Interval, in multiples of five minutes. This parameter
determines how often response data for service classes, CICS regions, and
individual transactions is summarized and reported by the Service Class Analysis workspace.
Note:
If your site set the collection interval to 1 minute by specifying
the INTERVAL=1 parameter in the configuration settings for the agent's collector
subtask, that setting overrides any value you specify for Collection Interval
using the CICS SLA view.
- Press the Save button.
Your updated SLA objects
and monitoring settings are written to the Tivoli Enterprise Portal Server, and the monitoring settings
are then passed to the Tivoli Enterprise Monitoring Server. The OMEGAMON XE for CICS on z/OS agent picks them up within the
next 60 seconds.
After you have set the CICSplex SLA monitoring values and activated them,
you are ready to close the CICS SLA view and return to the Tivoli Enterprise Portal's Physical
view; see Returning to the Physical view.