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z/OS – Advanced – Tips and Tricks 2.5


2 hours



This course contains many z/OS-related tips, tricks, techniques, and best practice items that you may find useful in your day-to-day activities. It covers several new areas of functionality associated with z/OS 2.4 and z/OS 2.5.


Operators and system programmers who need to monitor and interact with z/OS systems.


It is assumed that the student has successfully completed all previous z/OS courses in this curricula, or has equivalent knowledge.


After completing this course, the student will be able to identify z/OS system commands and activities to improve system performance, and more quickly resolve system problems.

Course Content

Tips and Tricks – z/OS Operations

Identifying System Attributes – D IPLINFO
Displaying CPU Details
Displaying Other System Software Details
Displaying all Systems in a SYSPLEX
Executing MVS or JES Commands in Batch
JES2 Command Statement in JCL
Executing MVS or JES Commands Using Batch SDSF
Using Automatic Command Processing to Invoke MVS and JES Commands
Useful Commands When JES Issues Warning Messages
Intermediate Action to Relieve JES2 Resource Shortage
Refreshing Software Attributes – LLA
Refreshing Software Attributes – Catalog Address Space

Tips and Tricks – z/OS Systems Programmer

Command Stacking
Refreshing Software Attributes – SMF
Displaying Allocations Using ISRDDN
SDSF Enqueue Panel
Tuning Tips – Component Trace
Tuning Tips – SMF Records
JES2 Hold and Dormancy
JES2 Checkpoint Statistics
Using PERFDATA to Display Statistics
Resetting PERFDATA Statistics
Using $JDHISTORY to Analyze Resource Shortages
System Boost Parameters
Dynamically Modifying the DEVSUPxx Parmlib
z/OSMF Parmlib Modifications Using the SETIZU Command