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  • How To Find I-O PCB in IMS DB Program

    A PSB must contain at least one PCB. If there is any system service calls or if there is any transaction management calls present in a program, then IO PCB must be defined in PSB. The sequence of PCBs should be as below in a program: Entry DLITCBL  Using   IO PCB Alternate PCB DB PCB GSAM PCB PCB TYPE=TP  …

  • IMS DB 4 Top Program Control Blocks

    In IMSDB- PCB has a key role. Because this acts as the program’s interface to the database. I-O PCB is the first one we need to give in the Entry statement of a program. There are 4 PCBs available: I-O- PCB: It will do DBCTL requests. If the program not using the IO PCB, so, no need to be defined in…

  • How to Improve Conversation Smalltalk Topics

    Here are Smalltalk topics and questions to practice

  • How to Use Working Storage in CICS

    COBOL program supports CICS. A developer’s question is why Working-storage and Linkage sections are needed. Below are my answers. Why You Need Working Storage Definitions in CICS You can define error-counts, File descriptions at 01 levels, Record key, Symbolic map, etc..COPY MapnameCOPY DFHAIDCOPY DFHBMSCA You can also define, Transactions-ids, File-length, etc. Why You Need Linkage…

  • More on SQL Triggers in DB2 Context

    SQL triggers additional points useful for db2 database developers

  • CICS-Sequential and Random Access

    What is Random access and Sequential access in CICS mainframe

  • Top Features in CICS Transaction Server 4.2

    It is the latest server. It has a lot of enhancements. We all aware that CICS runs mainly on ZOS. Very high usage in Banking and Insurance domains. Some of the recent changes in this version as follows: Event processing: New capability is, if any system failure or Db2 failure happens new version will generate events, so that system…

  • How to Define VB files in COBOL Sample Logic

    Here’s the logic to define VB files using the OCCURS clause. When you want simplified code always better use OCCURS clause, I am giving here two usages. These two styles save your precious time. Define VB files in COBOL USAGE 1 USAGE 2 The other way of coding VB files: Notes to developers Related Posts

  • COBOL String modification idea using pointer statement

    The popular string modification ways described here with examples. You can use these into your COBOL project directly.

  • Xpediter Mainframe Debugger Tutorial (Part 2)

    Xpediter tutorial explained useful commands

  • Os390 Vs Zos Top Differences

    All may not be aware of these differences sometimes. Yes, all mainframe professionals are experts in the technologies, but in these not that much. Knowing a little bit about architecture will definitely keep you ahead. ZOs: It is 64 bit processing system it was introduced in 2000 It supports all mainframe technologies, C, C++, Java…

  • Why GETMAIN You Need in CICS Programs

    The real use of CICS GETMAIN command given with sample code.