CICS/TS Architecture Part 2 - Structure & Flow

Objectives
On successful completion of this course, attendees 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.
Prerequisites
Prior attendance on 'CICS/TS Architecture Part 1 - Foundations' class is recommended.
Duration
5 days

Course Code
TSAR2
Contents
Storage Manager Domain
Preventing storage violations with transaction isolation and storage protection; using an SM dump to identify problems with fragmentation of subpools; Page Allocation maps; DSA extents and subspace user areas.


Log Manager Domain
System Log (DFHLOG/DFHSHUNT) and General Logstreams; the log tail deletion process.


Recovery Manager Domain
CICS Units of Work and 'in-doubt' resolution.


Timer Domain
TREs, Timer Logic and the relationship with the QR.


Interval Control
ICEs, Expiration Analysis and ATI logic for STARTs.


Transient Data
Extra & Intrapartition queue management. Intra-TD buffering and CI management.


Temporary Storage
Using MAIN; AUX and SHARED TSQs; exploring the TS anchor; TS name anchor; Digital Tree Nodes; the TSQ; TS item descriptor; aux and main item descriptors.


Directory Manager Domain
Hashing/Hash elements and Binary Trees.


Terminal Control
DFHZARQ, DFHZDSP and DFHZRAC processing overview; the use of HPO in a VTAM environment; the TCT prefix; TCTTE, TCTSE; TCTCE control blocks; RACE processing; AIDs and TIOAs.


TCP/IP Introduction
Introduction to using TCPIPSERVICES for http(s); CWS overview, CSOL, CWXN/CWXU, HTTP Request/Response; HTTP 1.1 compliance.


TCP/IP & ECI
Introduction to ECI over TCP/IP.


TCP/IP, HTTP & Web Services
Latest in code page conversion; DOCTEMPLATE, URIMAP, Pipelining, chunking HTTP Client and Server, Redirection and Virtual Hosting.


TCP/IP & IIOP
CICS support for IIOP; REQUESTMODEL, CORBASERVER and DJAR objects.


Business Transaction Services
Concepts; Events; Timers; LRQ and Repository datasets; PROCESSTYPE object; DFHBARUP and DFHATUP.