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 ibm db2 used for?

1001

What is runstats and reorg in db2?

1236

What is runstats utility in db2?

961

What does db2 plan contain?

960

What is syscat in db2?

949

What does db2 stand for?

958

What is plan in cobol db2?

1059

What is ibm db2 client?

879

What is cobol db2?

932

What is bufferpool in db2?

984

Explain the benefits you can get from mainframe connect?

910

Explain about mirror activator disk mirroring?

957

Explain about open switch business continuity software?

1072

How to read and write a single record into a file. I would like to use it to enter a single 8-character piece of information and use it to put it into a variable for processing in JCL. Thank you

1014

Can we move X(7) to S9(7) COMP?

1 1945

Un-Answered Questions { IBM MainFrame }

is delete operation supported in an esds? Is rewrite operation possible in esds?

1049

Are views updateable?

1070

What is an ook-rec in idms?

809

How do we specify index to include or not during bind process.

2069

When do you specify the isolation level?

971

What is mainframe testing?

1022

What are the common tables in cics and their usage?

950

What is the use of qsam?

773

What are the types of the dfhmdf present in the cics?

943

Every map is categorized into multiple fields, and there are three common working storage fields present for each of these respective fields. Mention those?

996

Is it possible to obtain a record from IDMS database without mentioning the record-name itself?

1291

Can you explain cics transaction gateway?

1005

What is the use of intialize verb?

1178

What is buffer pool in the db2 database?

1046

How do you pull up a query which was previously saved in qmf?

1098

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