IBM MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

COBOL (1072)
JCL (1031)
CICS (755)
DB2 (1122)

IMS (143)
IDMS (107)
Natural (81)
ADABAS (26)

REXX (60)
Assembler (68)
CLIST (6)
QMF (32)

MVS (25)
OS390 (10)
OS 2 (7)
VSAM (319)

IBM MainFrame Interview Questions

Questions Answers Views Company eMail

Is there GOTO and SWITCH-CASE available in JCL ? Is IF-THEN-ELSE available in JCL also just like it is available for VSAM datasets under Model Commands category ?

IBM,

1 13606

What is a JCL Command statement ?

IBM,

1 7157

How many JOB statements a JCL can have ? If there are more than one JOB statements in a JCL, are they submitted in succession or in parallel ?

IBM, Tech Mahindra,

4 17237

If Name is NOT given for a JOB statement, then will it give error or installation will supply it for the JOB ?

IBM,

1 9114

How to release a JOB (from the input queue) held by TYPRUN = HOLD ? and how to see the installation default time after which a JOB will be automatically released ? How to see the list of currently HELD JOBS ?

IBM,

5 27215

How to print the Output to SPOOL using MSGCLASS and SYSOUT ?

IBM,

4 23632

Is Default for MSGCLASS = (1,1) ?

IBM,

2 6774

1) Is CLASS used for assigning Priority (as we say a job having class '6' will run before the job having class '5'? then what is the difference between CLASS and PRTY ? 2) In a same JCL, 2 JOB statements with different Classes and NO PRTY are submitted ? which will run first ? & with different classes and different PRTY also, which will run first now ?

IBM,

3 16874

Can we have a JOBSTEP without any EXEC ?

IBM,

6 19810

Is stepname is a MUST and should be unique also for each JOBSTEP ? or system can supply the stepname for a step which is not given a name by the programmer ?

IBM,

6 11285

Why 16 is used in calculating the DPRTY ? as, DPRTY = (num1, num2), THEN, DPRTY = 16* num1 + num2

IBM,

4 11649

As PARM can supply information to a program ? Can PARM be used to supply information to a cataloged or Inline Procedure also ?

IBM, RS Software,

2 6520

what is the Difference between SYSIN and PARM ?

IBM,

5 18444

What is default if we don't specify RD parameter at all ?

IBM,

1 4792

What is Automatic Restart ? EXEC PGM = PROG1, RD = R (Is it the Restart of a JOBSTEP or Restarting the execution of the program?) Do we Restart it or it automatically Restarts executing again and again ? Then when it will finish executing ? or After Abending, when we submit it again, then it is Restarted from the Last successful Checkpoint ? If some JOBSTEP is abending, what is the benifit to Restart it, WILL IT NOT ABEND AGAIN if you don't change the LOGIC ?

IBM,

1 6374

Un-Answered Questions { IBM MainFrame }

What are some jcl statements that are not allowed in procedures?

1234

can anybody post me about file-aid and changemen tools pls and give me reference if any mainframe guys are there

2470

What dd statement is used to supply the name of a dataset?

1386

What do you understand by the term “keyword” with respect to jcl and what is the opposite of the term?

1142

What does a cics translator do?

1436

DB2 can implement a join in three ways using a merge join, a nested join or a hybrid join. Explain the differences?

2840

Explain how would you resolve an asra abend?

981

What is the difference between comp and comp-3 usage?

1197

How to alter the parameters for the existing gdg?

1200

What does a ROLLBACK do?

1520

What is the difference between comp and comp-3?

1183

What does the 'cebr:cics' transactions do?

1027

Explain delete-connected tables?

1025

What is explain in db2?

1014

)If there are 10 steps in GDG, if I want to refer the step2 after step5 . what should I do?

2009

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