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

How do you handle empty files in a JCL ?

Wipro, Xansa,

3 17893

I have a JCL which 20 steps. How do I execute 17 th step alone (It should execute only 17ths tep.and it should not execute 18,19,20 steps??

IBM, Infosys, TCS, Xansa, Xchanging,

9 65536

What is a GDG? Why do we go for a GDG ? utility used to create GDG?

Xansa,

3 12441

What is a MODEL Paramater in GDG ?

Xansa,

2 8975

GDG Create syntax ?

Xansa,

4 16725

Max generations in GDG??

Xansa,

15 25150

I have 5 generations in my GDG. How do I code in the JCL to consider all the 5 versions of the GDG ?

Xansa,

5 22917

What is SORT ? How do we eliminate duplicate records ? How do I select some records using SORT ?

GE, Xansa,

9 37223

what is XSUM in some fields= none, xsum ??

Xansa,

7 69137

what is reuse parameter ?

Polaris, Xansa,

3 28751

What is VERIFY command ? when do you use this command?? What actually it does ??

Xansa,

2 30518

Create syntax for a VSAM file ?

Xansa,

2 24137

How did you refresh a VSAM file and how frequently you do it ?

CSC, IBM, Patni, Xansa,

3 11782

How do you prepare a COBOL + DB2 program from coading till execution ?

Amdocs, Xansa,

1 10722

what are the frequent DB2 abends did you encounter in your programs ?? What are different SQL abends ??

Xansa,

4 14348

Un-Answered Questions { IBM MainFrame }

I have a File that has duplicate records. I need only those records that occur more than thrice.?

10019

what are s0c1, s0c4, s0c5, s0c7 abends?

1380

Hello, I have 3 years of exp as a mainframes tester in a leading IT company, now am looking to change my company. Could you please let me know, what are the interview questions/topics i should prepare. Your suggestions are truly valuable for me :) Thanks !!

1998

What is the term “where” for?

1068

Explain the biggest disadvantage of using a vsam dataset?

1099

Is it possible to left uncode disp? If yes, how?

1236

How to traceback if I am getting SOC7 or SOC4 abend? List down the steps

5432

I have a subprogram B calling from mainprogram A.I have opened a cursor in A ,Can i fetch the same cursor in subprogram B , If yes , Please explain the reason?

2444

define clustering index.

1074

Tandem COBOL Interview questions (on TACL,SCOBOL,ENSCRIBE,PATHWAY0

23732

What is the usage of open cursor command?

1153

what are the reserved words for cics?

1160

What is the advantage in De-normalizing tables in DB2?

1240

does uni-rexx give me any capabilities designed specifically for the unix environment?

1038

What is the maximum length of sqlca?

1622

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