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 are the codes returned by the ams (access method services) command during the execution in vsam?

IBM,

1286

is it required that primary key values have to be unique? Do alternate key values have to be unique?

IBM,

1052

what do you mean by a upgrade set in vsam?

IBM,

1061

explain how do you define a gdg in vsam?

IBM,

1023

explain how can you initialize a vsam file before any operation?

IBM,

1101

what do you mean by gdg in vsam?

IBM,

1192

what are the additional information you should give in the dd statement while defining the next generation of a gdg?

IBM,

981

name the utility program closely associated with vsam?

IBM,

1030

what do you mean by idcams? Explain its purpose?

IBM,

963

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

IBM,

1105

what will happen when you try to open an empty vsam file in a cobol program for input?

IBM,

1048

what are s0c1, s0c4, s0c5, s0c7 abends?

IBM,

1304

can you specify some the distinctive features of a ksds, key sequenced dataset?

IBM,

1025

how many buffers are allocated to vsam ksds and esds?

IBM,

1165

what do you mean by recovery and speed parameters in define cluster command?

IBM,

1106

Un-Answered Questions { IBM MainFrame }

What is basic difference between directory and pds in ibm mainframe?

1174

What is the use of db2 optimizer?

1110

Can a Search can be done on a table with or without Index?

1289

What are the terms cics generally means?

1006

How many bytes will a s9(8) comp field occupy ?

1121

Can we use DISP=SHR in output file in JCL

1415

what is the difference between a package and a plan. How does one bind 2 versions of a cics transaction with the same module name in two different cics regions that share the same db2 subsystem?

1060

In a KSDS file, key is missing for one record. How to insert the key for that particular record from back up file. Is there any sorting needed for the back up file before the key insertion?

1465

Explain what is the massinsert option?

1066

what is a corelated subquerry?

1122

How do I start db2 in windows?

1087

What is the local-storage section?

1144

Can min or max be used with alphanumeric data?

976

What is the contrast between delimited by space and delimited by size?

957

i want a program using by if, evaluate , string, unstring, perform, occurs?

4720

For More Un-Answered { IBM MainFrame } Questions Click Here