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CICS Debugging

CICS Problem Determination and Debugging

AUDIENCE: CICS application and system programmers.

OBJECTIVE: To improve the student's program development time and debugging techniques. Students should find it easier to write and debug programs that execute with a higher degree of reliability.

DESCRIPTION: This class illustrates the facilities and techniques required to debug CICS programs. Transaction dump and trace table analysis are the primary topics. Some of the very important topics covered are:

Dump reading and analysis.
Location of program checks and data areas.
Trace table interpretation and analysis.
Internal deadlocks and VSAM lockouts.

Students will also be shown how to avoid many common errors such as storage violations. This valuable class should be attended by all CICS programmers.

WORKSHOP: None. Sample dumps and traces are provided.

PREREQUISITES: The CICS Command Level Programming class or equivalent experience is required.

TOPICS COVERED:

Application interfaces
How CICS processes requests
Expanded EIB information
The CICS dump facility
Generating dumps
Transaction dump analysis
Program Status Word (PSW) formats
Locating program checks
Locating WORKING STORAGE
Locating COBOL pointers
Locating the PL/1 DSA and assembler dynamic storage
Locating data areas
Program loop processing
Tracing logic flow
Analyzing the trace table
Auxiliary trace facility
Generating trace entries
Restricted COBOL verbs
Recovery and backout review
Single threading concepts
Internal ENQ and DEQ processing
Detecting ENQ deadlocks
Detecting VSAM deadlocks
VSAM error analysis
Recursive abend routines
Basic control block relationships
Basic overview of the CICS Task Control Area (TCA)
Storage violation detection

DURATION: 2 days

COURSE #: CS390

PUBLIC FEE: $500

Students Each

1 $500

2 $475

3-5 $450

6-7 $425

8-> $400

ON-SITE FEE:

Students Each

10 $450

11-15 $337

16-> $225

Other Information

CICS Advanced Debugging

AUDIENCE: CICS application and system programmers.
OBJECTIVE: Improve the student's ability to isolate storage violations and deadlocks in production environments.
DESCRIPTION: This special class is designed for CICS programmers responsible for debugging storage violations and lockout problems. Standard CICS storage violation dumps are utilized for illustrations.
These common problems have affected almost every CICS application system. They are costly to experience and isolate.
On-site versions of this class may utilize your own storage violation dumps. This can greatly increase the value of this class.
WORKSHOP: None. Sample dumps and traces are provided.
PREREQUISITES: The CICS Problem Determination and Debugging class or equivalent experience is required.
TOPICS COVERED:

Control block descriptions

Control block relationships

Common causes of storage violations

The Storage Accounting Area (SAA)

CICS storage violation detection

Non-detectable storage violations

Interpreting a storage violation dump

Locating violated areas

The Free Area Queue Element (FAQE) chains

Locating free storage areas

Using the storage freeze facility

Generating a formatted dump

Interpreting a formatted dump

The Dispatch Control Area (DCA)

Locating all active and suspended tasks

Determining task status

Implicit ENQ and DEQ processing

Detecting ENQ deadlocks

Detecting VSAM deadlocks

DURATION: 1 day
COURSE #: CS391
PUBLIC FEE: $300

Students Each

1 $300

2 $285

3-5 $270

6-7 $255

8-> $240

ON-SITE FEE:

Students Each

10 $270

11-15 $202

16-> $135

Other Information