What Are Mainframes?

April 8, 2017 Rui Miguel Feio

Although many people have only heard of mainframes on movies or even believe that mainframes are an obsolete dying technology, the truth is, today mainframes are still a vital piece of technology in our society. To this date, 96 out of the world’s top 100 banks and 23 out of […]

How to Copy Data Between z/OS and USS via Batch Job

February 14, 2017 Rui Miguel Feio

Ever wondered how you can transfer data between z/OS and Unix System Services? Well, one of the ways you can do this is via batch job. //COPYFILE EXEC PGM=IKJEFT01 //IN DD PATH=’/tmp/file.txt’ //OUT DD DISP=SHR,DSN=USERA.USSFILE.EXAMPLE(FILEUSS) //SYSTSPRT DD SYSOUT=* //SYSTSIN DD * OCOPY INDD(IN) OUTDD(OUT) TEXT /* In this batch job, […]

EXITS provided with z/OS by IBM

January 10, 2017 Rui Miguel Feio

What exactly is an EXIT in z/OS? An EXIT is nothing more than a subroutine invoked by a program that can be customised to implement a predefined event in the execution of that same program. Confused? In that case imagine an EXIT as a way to customise the execution of […]


January 1, 2017 Rui Miguel Feio

If you ever come across a situation where you need to get rid of a profile from RACF but for some odd reason it’s proving to be a difficult task, you may relax; RACKILL utility is here for the rescue. The RACKILL utility allows you to unconditionally delete profiles in […]

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