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  • How to Improve COBOL Table Lookup Performance

    Don’t open the file until you need it: The OPEN and CLOSE instruction generates a lot of excessive code, so the recommendation is to always put all of your files in the same OPEN and the same CLOSE. Well the default number of buffers in MVS is 5, so each file you open will consume…

  • 25 Top COBOL Recently asked Interview Questions

    COBOL interview questions of type multiple choice you can read and learn quickly to your next interview.

  • 8 Top Rules to Write Updatable-view

    Read only views and Updatable view and its top rules useful for SQL developers.

  • Top 27 CICS interview Questions to Revise Concept Quickly

    The most popular interview questions on CICS transaction server and TSQ and TDQ concepts. Really good to apply in your project and to learn quickly.

  • 2 Super Ideas on Using COMP and COMP-3

    How to define COMP and COMP-3 data type fields in your COBOL program explained with super ideas.

  • JCL for DB2 LOAD and UNLOAD Utilities

    Here are sample JCL you need for DB2 Load and Unload utilities. On this page DB2 UNLOAD JCL DB2 LOAD JCL Sample DB2 UNLOAD JCL Sample DB2 LOAD Utility JCL Below are the control statements for the Load utility. Data is loaded from tape into the AVAILABILITY_D table. The DDNAME for the SYSPUNCH data set…

  • The Real Purpose of RELEASE Command in CICS

    What is the function of RELEASE command in CICS? And why you need to use this command? The main function of LOAD and RELEASE commands are to reduce the storage used. The main benefit is dynamically we can LOAD a program to memory and we can issue CALL statement to call that program. Release a…

  • Tutorial on Assembler Language – Presentation

    This Assembler tutorial educates on writing code for mainframe computers, providing efficiency and performance through specific hardware manipulation.

  • Top Mainframe Interview Questions ( 2 of 3)

    The selected list of Mainframe Questions on COBOL, JCL and DB2. The list given here you can read from your smart phones easily.Read more.

  • DB2: How to Create Function-Best example

    The example to created function in DB2.

  • VSAM Verify: How to Resolve Catalog Errors

    Verify command in VSAM can be used to correct the catalog file related errors. The errors if any found in the files the verify command and checks and correct those error. This post is all about VSAM verify command.

  • How SYNCPOINT Performs to Carry out LUW in CICS

    How syncpoint works in CICS and syntax to write it you will know here. SYNCPOINT- Is thread safe command. It just establishes syncpoint. Syntax: SYNCPOINT—————————————————>< SYNCPOINT ROLLBACK – Back out to last syncpoint. This is also thread safe command. Syntax: >>-SYNCPOINT–ROLLBACK—————————————–>< Keep Reading