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 17549

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 64805

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

Xansa,

3 12039

What is a MODEL Paramater in GDG ?

Xansa,

2 8760

GDG Create syntax ?

Xansa,

4 16342

Max generations in GDG??

Xansa,

15 24063

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 22460

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

GE, Xansa,

9 36622

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

Xansa,

7 68608

what is reuse parameter ?

Polaris, Xansa,

3 28376

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

Xansa,

2 30230

Create syntax for a VSAM file ?

Xansa,

2 23951

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

CSC, IBM, Patni, Xansa,

3 11324

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

Amdocs, Xansa,

1 10555

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

Xansa,

4 13950

Un-Answered Questions { IBM MainFrame }

What is a dbrm in db2?

971

what do you mean by recovery and speed parameters in define cluster command?

1032

What is integrated data dictionary?

873

What is database reorganization?

1056

Highlight the points of differences between XCTL and START?

1140

What is the use of symbol // in jcl?

1394

How to find all duplicate records?

913

What is comp-1 and comp-2?

1187

How would you understand error(execution phase)?

1171

What is the maximum No of rows per page?

1013

What is the motivation behind coding class parameter in job statement?

1134

How is deadlock resolved?

1083

What does a cics translator do?

1384

I have program P1 which calls file F1 which has 100 records and following structure 001 .................. 002 .................. 003 .................. 098 .................... 099 ................... 100 .................... Now I want to read these files and write these records in file F2 in following manner. 001 ...... 051 ..... 002 ...... 052 ..... 003 ...... 053 ..... .......... ....... .......... ....... .......... ....... 048 ........ 098 ...... 049 .......... 099 ....... 050 .... 100 ......

12191

Is ibm db2 open source?

1016

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