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

For a db2 column that is being defined as decimal (11, 2), discuss the cobol picture clause.

1100

Discuss about db2 bind?

1089

List out the data types available.

1148

Define sqlca.

1103

Explain packages.

1107

Mention the definition of cobol in varchar field.

1244

Explain the function done by data manager?

1273

Define buffer pool.

1047

Outputs of explain are with matchcols = 0. What does this signify?

1051

Explain in detail about buffer manager and its functionalities?

1062

Mention the various locks that are available in db2.

1034

Explain about dbrm.

1038

Can I redefine an x(200) field with a field of x(100) ?

1203

What is comp-1?

954

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

1121

Un-Answered Questions { IBM MainFrame }

in order to execute step2 a job after a return code of 8 in step1, what condition you will code in step2?

2707

A dd statement consists of 4 fields. Name them?

1418

Discuss about db2 bind?

1089

What is the use of symbol // in jcl?

1475

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

1003

What is program reentrance?

1157

What is the mainframe testing? Categorize the mainframe manual testing?

953

What is a bind in idms?

868

What is use of IBM framework?

2110

Can you explain primary aspect of cics?

1152

Explain various types of locks in db2?

1139

Mention the downsides of page level lock.

1159

How many register we are using in mvs?

1049

Explain difference between read(1) and read work file once?

951

what do you mean by the repro command?

1094

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