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

define clustering index.

1019

List out the three types of page locks that can be held.

1146

Explain about rct.

1085

Explain correlated sub-queries.

1025

Mention the location where the output received from explain statement is stored.

1122

What are the uses of db2 optimizer?

1291

Comment whether dclgen is mandatorily used. If not, then what is the point of using it?

1053

Before you give the explain statement, what are the prerogatives?

1028

What is the information associated with sysibm.syslinks table?

1120

Mention the way of highlighting as well as putting a cursor to use in a cobol program.

1073

What is the purpose of using commit?

1091

If the cursor is kept open followed the issuing of commit, what is the procedure to leave the cursor that way?

1144

What is meant by explain?

1124

Define db2.

1104

Highlight all the advantages that are attached to a package.

1111

Un-Answered Questions { IBM MainFrame }

What is auto status in idms?

873

what happens when COND is coded in JOB statement and when COND is coded inside EXEC statement?

1291

Name at least one of the ways by which a transaction can be terminated?

1038

what do you mean by a shareoptions parameter (shr) in define cluster command?

1300

can anybody post me about file-aid and changemen tools pls and give me reference if any mainframe guys are there

2469

What are IDMS set of occurances?

1346

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

9873

Explain the purpose of the program list table?

992

What is the use of the eibaid field?

1139

Write about a ‘view’ in brief?

967

Explain the difference between external subroutine and subprogram?

1220

Can I redefine an x(100) field with a field of x(200)?

961

Explain how to initialize a register to 0000?

1008

Can an individual step be restricted from using all the jobs allowed cpu time?

1550

What is the difference between drop table and delete table?

1203

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