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

which SQL comment successfully removes uncommitted changes from a DB2 database A) rollback B) delete C) drop D) decommit

Accenture, Wipro,

2 12827

how do we do unit testing in mainfrmae. explain step-wise.

IBM, JBK,

2 16742

Can we use redefine clause in occurs clause?

10 24776

What is the difference between write & move in COBOL?

CSC, HHB,

3 14886

What is the meaning of 'TALLING' verb in cobol?

5 16599

What is the meaning of 'Eject' verb in cobol?

TCS, Wipro,

2 28853

How can we pass data from cobol to JCl?

ADP, Amdocs, IBM,

7 48704

How include time & date in the report generation in cobol programing?

2 11427

How does IDMS communicate with CICS?

Covansys, Satyam,

1 5868

What are the pertinent COBOL commands?

Satyam,

3172

What is the difference between a binary search and a sequential search?

10 47023

How can you pass values from COBOL program to non-COBOL programs?

2 7740

How does IDMS insure data integrity?

1 5157

What are the functions like c or c++ in cobol?

2 7127

What is difference between comp & comp-4?

6 22363

Un-Answered Questions { IBM MainFrame }

Specify the requirements for automatic task initiation?

1003

Tell about the ams used in vsam?

1172

Explain about run unit currency?

881

what are the commands used to gain exclusive control over a resource?

1212

My sql statement select avg(salary) from emp yields inaccurate results. Why?

1087

suppose oza017.myorg.emp has 100 records ,oza018.myorg.staff has 200 records but 50 are the common records in both files copy all the common records into oza017.myorg.xyz dataset?

1002

In COBOL, what is the different between index and subscript?

1243

i want to store 20 digits . how will u do it in cobol ?

1411

What are the various error conditions seen in rexx?

911

What is the meaning of the deq command?

1142

How to get the last record in vsam file in cluster?

1009

What is a trigger in the db2 database?

1069

File not opened because library is *PROD and debug is UPDPROD(*NO). ? what may be the reason? how to solve it..?

2933

how will you find a particular line in debugging if its a infinite loop

1759

What is buffer pool and list some of them?

1025

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