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,

1354

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

IBM,

1104

what do you mean by a upgrade set in vsam?

IBM,

1130

explain how do you define a gdg in vsam?

IBM,

1090

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

IBM,

1154

what do you mean by gdg in vsam?

IBM,

1259

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

IBM,

1050

name the utility program closely associated with vsam?

IBM,

1107

what do you mean by idcams? Explain its purpose?

IBM,

1026

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

IBM,

1161

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

IBM,

1093

what are s0c1, s0c4, s0c5, s0c7 abends?

IBM,

1380

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

IBM,

1081

how many buffers are allocated to vsam ksds and esds?

IBM,

1212

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

IBM,

1182

Un-Answered Questions { IBM MainFrame }

Where can you declare a cursor in a cobol-db2 program?

1148

What are the different data types in cobol?

1521

Can you explain multitasking and multithreading?

1202

What is icm instruction?

1123

I have mainpgm(abc) this is the only cobol pgm(non-db2).And this pgm calling subpgm name "acd" this also only cobol(non- Db)and this pgm calling some other subpgm this pgm has cobol-db2 pgm. 1) IF you calling static mode how to run and how to compile? 2) IF you calling dynamic mode how to run and how to compile? plz suggestion me.

2678

What is sqlca’s maximum length?

1252

how can we apply for HSBC exam(Mainframe) in India??? i went to their site and was told to submit my CV ,. etc..( totally confusing...)

2448

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

1050

What are the different dataset organizations used in vsam?

1058

Can any one tell me that how we go for the compare,unit testing after changing requirement as per client request. this is very helpful for me when u give suitable (coading) exmple.

2205

Why include statement is used in a jcl?

1242

what is a base cluster in vsam?

1185

If a ceo wants to see all employees of the company from an online screen. How will be the design of the map from the developer point of view?

1091

Can you define mapset?

1106

Explain the benefits you can get from mainframe connect?

1024

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