CICS/TS Architecture Part 2 - Structure & Flow

This course continues the 'Architecture Series' by introducing additional CICS/TS domains such as Storage Manager, Log Manager and Recovery Manager. Also included are components such as Temporary Storage, Transient Data and Interval Control which probably are readily familiar from an 'externals' perspective, however here we complete the entire picture of how they work, how they are managed and how they can be debugged. Additionally we introduce Web Services, Sockets, Web and EJB functionality.

This course is available for one-company, on-site presentations and for live presentation over the Internet, via the Virtual Classroom Environment service.

Virtual Classroom Environment dates - click to book!

UK Start Times

1 July 2024

What is a 'Virtual Classroom Environment'?


What do I need?

  • webcam
  • headphones with microphone
  • sufficient bandwidth, at least 1.5 Mb/s in each direction.

What you will learn

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

  • describe all aspects of CICS Storage Management including solving and preventing Storage Violations
  • manage Logstreams and understand Recovery Management issues
  • manage and understand Temporary Storage and Transient Data expectations
  • understand communication with CICS either via Terminal Control or Sockets domain
  • appreciate the features delivered by Web Services and the Pipeline Manager Domain; Web and Document Handler domains and obtain a brief introduction to CICS EJB functionality.

Who Should Attend

CICS Systems Programmers.


Prior attendance on the course CICS/TS Architecture Part 1 - Foundations is recommended.


5 days

Fee (per attendee)

£3500 (ex VAT)


This includes free online 24/7 access to course notes.


Hard copy course notes are available on request from

at £50.00 plus carriage per set.

Course Code



Storage Manager Domain

Storage Manager Introduction; 64-Bit Memory Management; 64-bit Common Area; 64-bit Shared Area; 64 bit Local System Area; Creating a memory object; CICS Storage Manager; CICS Memory Objects; V5.* CICS DSAs; CEMT INQ DSA; CICS GETMAIN; CICS GETMAIN64; Extent Summary; EXECKEY; TASKDATAKEY; MVS Subspaces; Transaction Isolation; IARSUBSP Subspace Macro; Subspace Creation Sequence; RSMDATA SUBSPACE; Branch in Subspace Group; Start-up Messages; Storage Manager Domain; V5.* GETMAIN64; V5.* PUT64; DSA Control Blocks; Task Subpools; Creating a 64 bit DSA subpool; Creating a 24 bit or 31 bit DSA subpool; Page Pool Area; Page Pool Extent; Page Allocation Map; CDSA example subpools; Grande Page Pool Area; Grande Page Pool Extent; Grande Page Allocation Map; DSA Page and Extent Summary; Storage Notify; Long running SM tasks; VERBX DFHPD680,'TR=1'; MVS 24 and 31bit extent management blocks; Cartesian Trees; CTN CDSA example; Subpool Control Area; Storage Element Descriptor; Grande Subpool Control Area; Grande Storage Element Descriptor; Fixed Length Subpools; Quick Cell Free Element; Grande Fixed Length Subpools; Grande Quick Cell Free Element; Task Subpool Check Zones; SM Exception trace; Storage Accounting Areas; Storage Violation Trap; SM Anchor; SM Transactions; Subspace Areas; Suspend Queue Element; DFHSM_Control_Cell_Pool; DFHGCA_Cell_Pool; DFHPPX_CELL_POOL; More Memory Objects;; CICS Internal Trace; National Language Support; DFHSMSVC Trace; VERBX DFHPD680,'SM=1'; VERBX DFHPD680,'SM=2'.

Timer Domain

Timer (TI); TIEXPIRY loop; Timer Anchor; Timer Request Element; VERBX DFHPD700,'TI=1'; VERBX DFHPD700,'TI=2'.

Interval Control

Interval Control Processing; Expiry Analysis; ICE Static Storage; Interval Control Element; VERBX DFHPD700,'ICP=2'; VERBX DFHPD700,'CSA=2'.

Log Manager Domain

Terminology; Log Stream; Log manager Concept; Coupling Facility Logs; DASD only logging; The CICS Log; Offloading; Chain Moving; Log Trimming; Activity Keypointing ; Log Manager Anchor; Journal Info AVL tree; Journal Info Header; VERBX DFHPD700,'LG=3'.

Recovery Manager

Two Phase Commit Processing; The In-Doubt Window Problem; Unit Of Work Creation; Commit / Backout Processing; Resource Owners; Backout Processing; Type of CICS startup; DFHRMUTL ; RM Anchor; RMUW Class Data; RMUW UOW Instance; RMLK Class and Instance Data; VERBX DFHPD700,'RM=3.'

CICS MQ Interface

MQ Keyword; MQ Interface; DFHMQGLB; CKQC; CKTI GETWAIT LOOP; DFHMQLOT; VERBX DFHPD700,'MQ=1'; VERBX DFHPD700,'UEH=2'; Host Module Save Area; Using R14; Finding the MQ CALL.

Transient Data

Types of TD queue; TD Queue Indoubt Attributes; TD Buffer Control blocks; TD String Control blocks; TD UOW Control blocks; TD WRITEQ Trace; DCTE; VERBX DFHPD700,'TDP=3'.

Temporary Storage

TS AP; TSMAINLIMI; TSMODE; Auxiliary Temporary Storage; Shared Temporary Storage; Temporary Storage Subpools; Temporary Storage Anchor; TS Name Anchor; DTN Collision; TS Queue Anchor; TS Aux Control Area; TS XRH; TS Aux Byte Map; TS Shared Anchor; TS Model Anchor; TS and Interval Control; TSQUEUE; VERBX DFHPD700,'TS=3'; TSM storage.

File Control

VSAM Files; EXEC CICS Read File; Control Intervals; Strings; Record Level Sharing; SMSVSAM Address Space; Coupling Facility Structures; Data Class attributes for RLS; Set Dsname; RLS related SIT parameters; RLS READINTEG Option; Shareoptions; Function Shipping Transformers; Coupling Facility Data Tables; CFDT Pool Server; CFDT Parameters; Shared Data Tables; Data Table Types; Data Spaces; CFTL Transaction; Data Spaces EOD Statistics; File Control Static; File SIT Parameters; FRAB, FLAB and FRTE; VSAM Work Area; V5.3 Verbx FCP enhancements; File related ENQs; UPAD Processing; File Control Table Entry; Dataset Name Block; Shared Data Tables Control Blocks; DT Global Area; DT_BASE; DT Space Block; DFHDT001 and 002; DFHDT003 and above; VERBX DFHPD700,'FCP=3'; VERBX DFHPD700,'DS=1,XM=1,NQ=1'.

Terminal Control

TERMINAL CONTROL; DFHZCP; DFHZDSP; Receive Any Processing; DFHZARQ; Conversational TCP Trace; Pseudo Conversation TCP Trace; TCTFX; TCTTE; TCTSE; TCTSK; AID AND TIOA; RACE, RAIA and RPL; VERBX DFHPD700,'TCP=3'.

Inter-system Domain

IS Domain; Basic IPIC Configuration Example; IPIC Waits; IPIC Transactions; IS Summary - Client side; IS Summary - Server side; HA Terminology; IS Summary - HA client side; ISA Anchor Block; ISCB IPCONN; ISSS & ISSB (Client); ISSS & ISSB (Server); ISAQ; VERBX DFHPD700,'IS=3'.

What the students say

Very comprehensive

Systems Programmer


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