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

What is sqlca and why is it needed in any cobol-db2 program?

1 1765

When is inspect verb is used in cobol?

1250

What is the difference between goback, stop run and exit program in cobol?

1580

What is distributed relational database architecture? And components?

992

Explain ibm z?

1008

What is difference between static call and dynamic call?

1026

What is database descriptor?

1017

How do you find whether any generations exist under a gdg base?

1040

Can we give +2 instead of +1 while creating a new gdg file?

957

How joinkeys helps in sort?

984

Can you explain referential integrity?

991

How to find all duplicate records?

975

Can you define notcat 2?

1031

What is the difference between hidam and hdam databases?

959

Can you define foreign keys?

1032

Un-Answered Questions { IBM MainFrame }

How can deadlocks be resolved?

930

What is the pcp in the cics?

925

What is a db2 package?

1048

Explain the difference between temporary storage queue (tsq) and transient data quene (tdq)?

991

Can we change the password using ALTER? anyone tried and changed?

2013

How are composite and multiple indexes different?

1002

What does a finish do in idms?

939

Explain how to differentiate call by context by comparing it to other calls?

1178

What are the access modes of START statement?

1267

Explain dclgen.

1195

What is db2 look?

1018

What is batch dl/i mode?

3342

What is multi row fetch in db2?

1044

Can one database have multiple instances?

1048

what sort card you will use to copy the data from one dataset to another dataset?

1216

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