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

Explain index cardinality?

1061

Define clustered index?

967

What is drda ?

1118

What is the need of running runstats in the test environment?

1078

What is the function of the verb initialize?

1086

Write the difference between hidam and hdam databases?

1007

What is the function of dbctl?

1122

Write about a ‘view’ in brief?

975

How can a like table be created?

988

Write about the self-referencing constraint?

978

Explain database descriptor in brief?

1009

State the maximum value up to which volumes can be inserted to an stogroup?

1047

Explain isolation level?

1113

What will be the result if on size error phrase is declared?

955

Explain delete-connected tables?

1029

Un-Answered Questions { IBM MainFrame }

Why are you looking for a change?

977

What is iseries database?

1050

What is defragmentation and what is its advantage?

1294

What are packages in db2?

1023

What is idms?

862

Explain lock contention?

1063

What is interval control?

1135

List out the buffer pools in db2

1075

Program A (Normal COBBAT) calling a B Program (DB2COBOL, COBBATDB which is using a VSAM file. its a dynamic call. How we will handle VSAM file decleration in our from JCL from where we are running A PGM. And should we have PLAN for A pGM also. if possible can some one post a sample JCL. Thanks for help in advance.

5749

What is ims (db/dc)?

1049

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

1302

What is NOTCAT ?

1335

What is comp-1?

961

What is the use of intialize verb?

1256

Explain about dbrm.

1049

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