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 13601

What is a JCL Command statement ?

IBM,

1 7156

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 17233

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 27214

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

IBM,

4 23630

Is Default for MSGCLASS = (1,1) ?

IBM,

2 6773

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 16873

Can we have a JOBSTEP without any EXEC ?

IBM,

6 19807

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 11281

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 6514

what is the Difference between SYSIN and PARM ?

IBM,

5 18440

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

IBM,

1 4790

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 6373

Un-Answered Questions { IBM MainFrame }

In a KSDS file, key is missing for one record. How to insert the key for that particular record from back up file. Is there any sorting needed for the back up file before the key insertion?

1463

Explain the function of the cics translator?

1040

What is the meaning concurrency in the db2 database?

1108

is there an aix version of oorexx?

988

In COBOL programming, what is PERFORM? What is VARYING?

1144

explain in brief how you can create a vsam file?

1131

i want to learn mainframe..any websites and material to learn from basic..? my mail id : rajeswaribe2010@gmail.com

2219

What is the place for VSAM KSDS?

1100

without jcl how to run the batch programs

2528

What is the purpose of dd * statement in jcl?

1285

What is Pic 9v99 Indicates in COBOL?

1256

What are the contents of a dclmgen?

1122

Explain about logical data model of idms?

874

What does a finish do in idms?

939

can we view the access paths created by dbrm ? how ? thx

7085

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