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 meant by dirty read in vsam?

IBM,

1347

name a few common vsam status codes?

IBM,

1060

explain the differences between vsam and non-vsam files

IBM,

1159

how do you define an altindx ? How do you use altindxs in batch, cics programs?

IBM,

1073

what parameter in the define aix option is used to determine the maximum number of duplicate keys allowable ?

IBM,

1009

explain the information contained in ci

IBM,

1037

difference between vsam and database tables

IBM,

1138

what is the meaning of each of the values in shareopts(2 3)?

IBM,

1030

what are the idcams commands that can be used for vsam and explain each of them.

IBM,

991

what is buffering and how does it apply to vsam files ?

IBM,

1179

we can define the ksds cluster by two ways by using the file-aid or by using the idcams utility. Explain them.

IBM,

1328

explain icm instruction?

IBM,

1084

explain about maximum displacement and how to cross this limit?

IBM,

1149

how to retrieve the instream data in sysin?

IBM,

1145

how to pass the parameters from jcl to assembler pgm?

IBM,

1109

Un-Answered Questions { IBM MainFrame }

How errors are handled in CICS programs?

1128

Define db2 and its databases?

1057

With the use of an alternate index, how is a VSAM file accessed?

1096

is there an aix version of oorexx?

994

Explain the primary function of the processing program table (ppt)?

996

What do you understand by psb and acb?

1125

Name the cics command used to access current date and time?

1140

What is the local-storage section?

1148

What is the difference between external and global variables in COBOL?

1466

Which is not true about evaluate statement

2457

What is the use of intialize verb?

1256

Mainframes gets a text file that contains the name of the file. Now using JCL i want to locate that file name in the mainframe system and perform further processing. Please tell how to proceed

2564

Is their any limit for data sets?

1188

Define an asra abend?

1079

what is the difference between JES3 and JES2?

1134

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