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 filter out the rows retrieved from a Db2 table ?

1 9362

What is a clustered index?

1 12532

When will you chose to run RUNSTATS?

1 9487

What does DML stand for and what are some examples of it?

IBM,

3 9847

What is meant by a unit of recovery?

1 6623

What is CHECK PENDING ?

5 20148

What is a thread?

3 8296

What is filter factor?

2 10799

What's the maximum number of volumes that can be added to a STOGROUP?

IBM,

1 9403

What are PACKAGES ?

3 9137

Which catalog tables contain authorization information?

1 6234

Is DECLARE TABLE in DCLGEN necessary? Why it used?

3 9818

How does one remove entries from the SCT02 table?

1 4682

what is the difference between join and union?

IBM,

4 19010

I use CS and update a page. Will the lock be released after I am done with that page?

2 9968

Un-Answered Questions { IBM MainFrame }

Define static linking and dynamic linking.

1279

is oorexx compatible with rexx?

1013

Explain database descriptor in brief?

1064

What is the difference between external and global variables in COBOL?

1555

What are the classifications of the cics program?

1334

Can you explain control variable in online screens?

1036

When output dataset space is required, what quantity categories are used?

1431

What is comp-1?

1018

for which platforms is uni-rexx available?

1039

Explain referential integrity?

1165

What is control area?

1148

What is db2 look?

1088

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?

1523

What are the two ways in which dl/i interface can be invoked?

1009

Define check constraint.

1137

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