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

db2 maintains information about the data... a.in tables. b.in a set of tables known as db2 catalog. c.in db2 database. d.none of the above.

1 4062

database DSNDB01 means a.db2 catalog b.db2 directory c.BSDS d.active logs answer with reason please

1 5876

should a AIX should be a unique value?

1 3864

what is the concept of AIX in vsam ????

HCL,

1 4327

max how many AIX coded in a vsam dataset??

2 5584

FREESPACE can be specified for which type of cluster? a.LDS b.RRDS c.ESDS d.KSDS

2 8116

what is the concept of IMPORT in vsam??

2 6288

in what type of vsam datasets can an alternate index be defined??

4 8210

how many bytes does a s9(12)COMP-4 field occupy?? a.2 b.4 c.8 d.1 ans with reason please

2 8476

can anyone explain me the concept of COMP-4 PLEASE??

2 5113

How to exclude the duplicate records from two concateded flat files (records from both files must be removed)?

1 5834

How to differenciate the given coding is pseudo conversational? (except EIBCALEN condition)

HSBC,

4 9609

can internal sort be applied to sort ksds files?

1 5475

I have a field with data type X(10). I want to perform arithmetic operation on this field? I tried doing it by moving the value into a numeric field. but it didn't work out. I am getting a S0C7 abend. Pls let me know if there is any way of getting this done?

ADP,

2 5454

1 4499

Un-Answered Questions { IBM MainFrame }

How the interaction between DB2, SQL, and QMF takes place?

1651

Explain how do you dynamically set the cursor position to a specific field?

1062

How to find occurrence of mu and pe fields in a file?

888

How to connect to db2 database from windows command line?

1061

Explain in DD statement what is the use of DCB parameter?

1135

What is the return codes 0307 and 0326?

947

suppose program A is calling program B, at a time A will send 100 records but it has to send 500 records. how it will possible?

2083

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

993

How do you eliminate duplicate values in db2?

1172

How to execute a query in qmf at a particular time?

942

Differentiate cobol and cobol-ii. (Most of our programs are written in cobolii, so, it is good to know, how, this is different from cobol)?

1111

How to rename a table in DB2 ?

1086

Explain about find and obtain commands?

907

What are the mainframe computing pros and cons?

1107

Explain about different table spaces.

1090

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