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IMS essentials

This course is a comprehensive introduction to IMS. It provides ideal cross-training for application support specialists from disciplines such as CICS, COBOL, JAVA, or Db2. The course introduces and explains all areas of IMS databases in both the batch and online environments, including data access using the DL/I language interface and the maintenance of data integrity using the DBRC feature.

On successful completion of this course, attendees will be able to:

Schedule

datumduurtaal  plaats  prijs
06 Nov4EHigh Wycombe  (GB)1825 GBP  (excl. BTW) 
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Intended for

All those working in IMS applications and database development, or any systems and operations personnel who require an understanding of the IMS environment.

Background

A general understanding of the IBM enterprise server (mainframe) computing environment and an appreciation of application development concepts is assumed.

Main topics

Why Use a Database?; Database types; Hierarchical terminology; Processing path; Accessing data; Database implementation; IMS online environment; Message Format Services (MFS); Utilities; Logging; Operational responsibilities.

DL/I Language Interface; Program Specification Block (PSB); IMS Call Format; Function code; Record retrieval Workshop.

Update processing; Command codes; PCB Addressing; Boolean SSAs.

Program Specification Block (PSB); PSB statements; PCB; PROCOPTs; PSB generation; ACB generation; PSB/program relationships; Batch JCL.

DBD; Database Organisation and Access Methods.

Secondary indexing; Secondary data structure; Stand-Alone processing; Things to consider; Logical relationships.

An introduction to HALDB features and processing options.

Logging; Image Copy; Reorganisation; Database Recovery Control (DBRC); associated tools and utilities.

IMS/TM configuration; Control (CTL) region; DL/I Separate Address Space (DLISAS); Database Recovery Control (DBRC); Message Processing Region (MPR); Batch Message Processing (BMP) region; Message scheduling; Logging.

Message Processing Program (MPP); Transaction codes & flow; Input message segment; Output message segment; IMS message calls; IO PCB mask; Common status codes.

Alternate PCB; Transaction switching; Conversational programming; Using Checkpoint/Restart.

MFS control blocks; DIF/DOF coding; MID/MOD coding; Attributes; Message management.

General characteristics; Fast Path EMH; Data Entry Database (DEDB); Main Storage Database.

Logging; Restart Data Set (RDS); Archiving; Contents of the Log; Normal restart; Emergency restart.

Sharing access - the problem; Sharing access - solutions; Control region / DLISAS; Program isolation; Locking; Deadlock resolution; Data sharing; Database-Level Sharing; Block-level sharing; DBCTL.

Operational considerations; Operations planning; Starting IMS; Stopping IMS; Online change facility; Controlling IMS.

DB performance; DB monitor; Database buffer pools; TM performance.

Training method

Practical exercises reinforce the formal tuition sessions. These include the analysis of sample applications and hands-on use of the procedures and utilities required to recover from various application and system failures.

Duration

4 days.

Course leader

RSM Technology.


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