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  • 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 

  • SQL NULL: Tricky Interview Question

    SQL NULL example query and how it returns when you write query. Read more.

  • Mainframe Vs Unix Top Differences

    Mainframe and UNIX operating system differences to read today.

  • Mainframe -OS/390 and ZO/s difference

    This question asked for many mainframe programmers. They are unable to tell correct answer. For your benefit I am giving the basic difference. OS/390: This architecture runs under 32 BIT address space Z/OS: This architecture runs under 64-BIT address space.

  • JCL ‘BPXBATCH’ Utility to run UNIX commands

    Below is the sample JCL to run UNIX commands in JCL using the BPXBATCH utility. JCL to Use BPXBATCH Utility About ‘nc’: ‘nc’ is the command which runs netcat, a simple Unix utility that reads and writes data across network connections, using the TCP or UDP protocol. It is designed to be a reliable “back-end”…