On successful completion of this course you will be able to:

• describe the domain architecture of CICS/TS
• explain the dispatching of work on multiple TCBs including L8, J8, SO, SL and QR
• describe how work gets into CICS by a variety of means
• explain how the Loader and Program Manager domains work
• debug CICS system and transaction problems
• discuss IPCS and the CICS verbexit
• tune CICS/TS
• describe the CICS-Db2 interface
• describe the exploitation of Threadsafe programs.

• Domain Architecture
  • Domain architecture
  • CICS Domains
  • Domains added since CICS/TS V2.1 (610)
  • Encapsulation
  • Domain Anchor Blocks
  • Domain gates
  • Gates, modules and macros
  • Specific, generic and call-back gates
  • Domain call format
  • DSSR example parameters
  • Response and Reason code
  • CICS task vs transaction
  • Introduction to the Kernel Task
  • Introduction to the Dispatcher Task Area
  • Introduction to the Transaction Manager
  • Introduction to the Storage Manager transaction (SMX)
  • 64-bit support
  • AP domain components.
    The Domain structure of CICS/TS, how domains are initialised/terminated and how they collaborate with each other.
• IBM Dump & Trace Utilities
  • Dump and trace utilities
  • Introduction to IPCS
  • CICS verbexit alias
  • Keywords
  • Complete or partial dumps?
  • SDUMP enhancements
  • CICS Trace introduction
  • Trace SIT parameters
  • Trace component names
  • CETR
  • Trace formats abbreviated
  • Trace formats full and short
  • Trace summary
• Domain Manager, Dump and Trace Domains
  • DU, TR and DM domains
  • Domain Manager (DM)
  • VERBX DFHPD700,'DM=1'
  • VERBX DFHPD700,'DM=1'
  • Domain Manager Trace example
  • Dump domain
  • Dump domain SIT parameters
  • System dump table entries
  • Transaction dump table entries
  • Dump Domain anchor block
  • Dump table entries
  • VERBX DFHPD700,'DU=3'
  • VERBX DFHPD700,'DU=3'
  • Trace anchor block
  • VERBX DFHPD700,'TR=
• Kernel Domain
  • Kernel domain
  • Kernel introduction
  • Finding the Kernel Anchor Block programmatically
  • Finding the Kernel Anchor via the Prefix Save Area
  • MVS TCB structure
  • Program Request Blocks
  • IPCS TCB summary
  • Program Status Word (PSW)
  • Breaking Event Address Register (BEAR)
  • CICS TCBs
  • CICS open TCBs
  • CICSAPI and OPENAPI
  • CICS attached TCBs
  • KEDS CREATE_TCB
  • Kernel Anchor Block (KCB) and Kernel Task (KTCB)
  • VERBX DFHPD690,'KE=2'
  • CICS TS V5.2 stat transaction
  • Kernel domain gate table
  • Executing a gate call
  • VERBX DFHPD690,'KE=2'
  • Kernel Task chains
  • Kernel Task - dynamic and static
  • Kernel Task - runaway task processing
  • Types of loop
  • Kernel Stack footprints
  • Kernel Task - stack entry
  • Kernel Stack chains
  • VERBX DFHPD690,'KE=2'
  • Module headers
  • Kernel Stack summary footprints
  • VERBX DFHPD690,'KE=1'
  • Kernel Push Pop
  • Error processing
  • Kernel error table
  • Kernel Task error data
  • Kernel Task error data summary
  • VERBX DFHPD690,'KE=2'
  • CEKL KILL
• Dispatcher Domain
  • Dispatcher Domain
  • Dispatcher introduction
  • Dispatcher chains
  • Dispatcher double chains
  • Dispatcher anchor block
  • VERBX DFHPD690,'DS=2'
  • Dispatcher Task Area
  • VERBX DFHPD690,'DS=2'
  • DSAT gate, attach function
  • DSAT gate CHANGE_MODE function
  • "Every so often" actions
  • Giving up control
  • Dispatcher post exit routine
  • DSSR Wait/Suspend processing
  • Dispatcher open pools
  • Subdispatcher blocks
  • Dispatcher TCB block
  • VERBX DFHPD690,'DS=2'
  • Dispatcher summary
  • VERBX DFHPD690,'DS=1'
• Transaction Manager Domain
  • Transaction Manager
  • Creating the XMTXN
  • XMAT processing
  • Primary client types
  • VERBX DFHPD690,'TR=1'
  • Transaction termination
  • VERBX DFHPD690,'TR=1'
  • XM anchor block
  • XMTxn
  • VERBX DFHPD690,'XM=2'
  • XM Transclass
  • VERBX DFHPD690,'XM=2'
  • VERBX DFHPD690,'XM=1'
  • XMXD, ADD, SET or INQUIRE TRANSDEF
  • VERBX DFHPD690,'TR=2'
  • XMTrandef and static area
• Application Domain
  • Application domain
  • AP domain anchor - Common System Area
  • Optional features list
  • VERBX DFHPD690,'CSA=2'
  • Transaction Control Area
  • STCA structure
  • EXEC Interface Block (user & system)
  • VERBX DFHPD690,'AP=1'
  • VERBX DFHPD690,'AP=2'
  • LE Dynamic Save Area
  • LE control blocks
  • COBOL TGT
  • VERBX DFHPD690,'AP=2' EXTRACT
  • VERBX DFHPD690,'AP=2' EXTRACT
  • Language Environment
  • LEDATA VERBEXIT
  • Formatting individual LE structures
  • CEEROPT
  • CLER transaction
  • TERMTHDACT
  • Storage report
  • Application program language block
  • Tuning LE storage automatically
  • VERBX DFHPD690,'APS='
  • Finding COBOL fields and last CICS command
  • Using the return address
  • Using BLW cells
  • Using BLL cells
  • Enterprise PL/I
  • Traceback
  • Condition Information Block
  • Finding PL/I data
  • z/OS XL C and C++
  • Traceback
  • Condition Information Block
  • Finding C/C++ data
• ENQ Domain
  • ENQ domain - introduction
  • Local and sysplex scope
  • ENQMODEL
  • UOWENQ
  • Additional techniques for sysplex ENQs
  • UOW states
  • ENQ pools
  • NQ anchor block
  • Queue Element Areas
  • NQEA belonging to second region;
    VERBX DFHPD690,'TR=1,TRS='
  • VVERBX DFHPD690,'TR=1,TRS='
  • VERBX DFHPD690,'TR=1,TRS='
  • VERBX DFHPD690,'NQ=3,': VERBX DFHPD690,'NQ=3,'
  • VERBX DFHPD690,'NQ=3,'
• Loader Domain
  • The Loader Domain - introduction
  • LD functions - example
  • DEFINE_PROGRAM
  • Public Loader control blocks
  • LD anchor block
  • CPE
  • APE
  • Program compression
  • PLIBE control block
  • Installed Application Element
  • Application multi-versioning
  • VERBX DFHPD700,'LD=3,'
• Program Manager
  • Introduction to the Program Manager
  • Program Manager anchor block
  • Program definitions
  • VERBX DFHPD690,'PG=1'
  • VERBX DFHPD690,'PG=2'
  • Logical levels
  • Program definitions
  • VERBX DFHPD690,'PG=1'
  • VERBX DFHPD690,'PG=2'
  • Program Transactional Area
  • Program Level Control Block
  • VERBX DFHPD690,'PG=1'
  • VERBX DFHPD690,'PG=2'
  • Program Environment Save Area
  • Channels and containers
  • Channel control blocks
  • Container pool control block
  • Container anchor control block
  • VERBX DFHPD690,'PG=1'
  • VERBX DFHPD690,'PG=2'
• Transaction Dumps
  • Introduction to transaction dumps
  • Transaction dumps
  • ASRA TRANSACTION DUMP
  • Solving the dump
  • Using the COBOL listing
  • PESA and PLCB summary
  • Task Control Area
  • Using the C listing
  • using the PLCB/PESA chains to work back to level 1
  • Program Environment Save Area
  • Using the PL/I listing
• CICS/Db2 Interface
  • Using the Db2 control blocks to find SQL statements and solve problems
  • Introduction to the CICS - Db2 interface
  • Db2 keyword
  • Program definitions
  • B2CONN
  • DB2ENTRY and DB2TRAN
  • CLOT
  • VERBX DFHPD690,'UEH=2'
  • VERBX DFHPD690,'DB2=1'
  • CSUB
  • VERBX DFHPD690,'DB2=2'
  • VERBX DFHPD690,'TR=1'
  • VERBX DFHPD690,'TR=2'
  • Finding the SQL
  • RDI

Live instructor-led training, with plenty of opportunities for hands-on exercises and discussion.
This course is available for one-company, on-site presentations and for live presentation over the Internet, via the Virtual Classroom Environment service.

Delivered as a live, interactive online training.

Experience of the externals of CICS, such as application and/or systems programming and/or resource definition and administration is essential. Prior CICS internals knowledge is not required.

CICS Systems Programmers and CICS Administrators.