The all about some very basics of ISPF key points, highly useful if you are a new to mainframe ISPF or an existing mainframe programmer. Read more.
The well explained ideas in SQL query how you can include sequence is given here for your quick reference. These also useful for learning SQL.
The big data process sometimes it is complex. To get the desired result we need quality data and help from many people. Read more.
The awesome advantages of of VSAM make still VSAM files are popular in mainframe. It has its own advantages and dis-advantages. Read more.
These are the ways you can submit JCL to JES from CICS. Then CICS provides an interface to JES to submit JCL. Read more.
The following are list of most commonly used errors in CICS. The list is bigger but to make it simple here I have given common error codes that you get in projects in your day to day development.