IMS DB in Mainframes On July 20, 1969, the human race accomplished its single greatest technological achievement of all time when a human first set foot on another celestial […]Read more
VSAM The term Virtual Storage Access Method (VSAM) applies to both a data set type and the access method used to manage various user data types. As an access method, […]Read more
What is REXX?
What is REXX? REXX was developed at IBM by Mike Cowlishaw. REXX is a computer programming language that’s easy to learn and use because it was designed for humans and […]Read more
What REXX is Not.
What REXX is Not! REXX is NOT CLIST! — REXX is NOT TSO! — REXX is NOT ISPF! — REXX is NOT PDF! REXX is an excellent language for […]Read more
TSO and ISPF.
TSO and ISPF As a mainframe programmer TSO and ISPF are mostly used tools. TSO is Time Sharing Option and ISPF is Interactive System Productivity Facility. TSO and SPF are two separate […]Read more
Is it an Assembler or is it a Compiler!
Is it an Assembler or is it a Compiler or Is it an Interpreter or is it a linker! Many of the “Software Engineers” I met said “assembler was a […]Read more
The missile Man of India!
Dr A P J Abdul Kalam, Avul Pakir Jainulabdeen Abdul Kalam, the missile man of India is no more. I intended to keep this post smaller to share my deepest condolences; thought […]Read more
Memory and Storage.
Both terms are used to refer to internal storage space on a computer and that’s where the main confusion comes in. Even if you look at this article from wiki […]Read more
Yoga – the new raga.
I was anticipating this to a certain extent but this morning when I switched on the TV the first word I heard was – YOGA! I was expecting it all […]Read more
Compare two files on mainframe using SyncSort.
Compare two files on mainframe using SyncSort As we talked about comparing two files using DFSORT and writing matched and unmatched records to the output, in this post we’ll address the […]Read more
Compare two files on mainframe – DFSORT.
Compare two files on mainframe and write the match & no-match records If you work in a Mainframe shop – once in a while you’ll get to the situation where you’ll […]Read more
PGM=SORT, PGM=ICEMAN and PGM=SYNCSORT. Are they all same?
What is the difference between PGM=SORT, PGM=ICEMAN, PGM=ICETOOL and PGM=SYNCSORT. Are they all IBM products. Which one should be used in JCLs? This is one of the questions I see […]Read more