Mainframe interview questions – page 6

What is the purpose of the PARM keyword in the EXEC statement?

How do you define a KSDS ?

What datasets are archived from disk and how long are they kept?

What is a PROC? What is the difference between an instream and a catalogued PROC?

What is FREESPACE ?

What is the difference between sequential files and ESDS files?

What does a store statement do?

How vsam datasets are cataloged?

How to invoke a jcl(with all control cards, like job crad and all) from another jcl

What is a run unit?

How do you define an ALTINDX ? How do you use ALTINDXs in batch, CICS pgms ?

What is the maximum record length for the VSAM dataset?

What is the importance of ADDRSPC parameter in EXEC statement and how is it different from REGION parameter of EXEC statement?

How to by pass the step without cond parameter

What do you do if you do not want to keep all the space allocated to a dataset?

What are the valid DSORG values ?

What is an OOK-Rec?

What is SHAREOPTS ?

How to change default proclib ?

How do you overcome this limitation ?

If you are current on the owner of a set, what is the difference between an obtain next and obtain first?

What are qualified and unqualified SSA's.

How does IDMS communicate with CICS?

What are the control blocks in ims ?

What is IAM (Innovation Access Method) and why is it better than VSAM?

Diff bw SB37,SD37,SE37 ?( bcz these 3 belongs Space related abends only)

What are the options in file-aid to edit vsam dataset and to compare data sets.

Can you calculate the mean, median and mode of the following data set using data step logic? Don't use any function or procedure.data a;input age @@;datalines;22 32 32 32 43 23 24 56 45 54 28 29 27 26 25 28 30 20 18 37 36 47 46 56 19 20 ;run;I have calculated the mean which i have posted in the answer section.

How to delete dUPLICATE RECORDS?

Suppose I have Five Steps in PROC In this Case I want to Execute third Step in PROC using Main JCL don't use any CONDExplain with Coding Thanks & RegardsSHREE