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

How do you select a row using indexes in db2?

1135

When reorg is used?

1129

What are the various isolation levels possible?

1122

How can you do the explain of a dynamic sql statement?

1069

Can you use max on a char column?

1097

List some fields from sqlca?

1058

Explain what are the various isolation levels possible?

1044

What is the physical storage length of the data types date, time, and timestamp?

1090

What is the use of value function?

1151

If I have a view which is a join of two or more tables, can this view be updateable?

1139

What is the result of open cursor statement?

1083

How would the varchar column remarks defined?

1088

What is the distinction amongst include and copy?

980

How to send a sms to a mobile through mainframe vm’s?

999

Express the distinction between jes2 and jes3?

1176

Un-Answered Questions { IBM MainFrame }

What are the different data types in cobol?

1444

Which mode is used to operate the sequential file?

1205

What is the physical storage length of timestamp data type?

1095

Explain the difference between record occurrence and record type in idms?

868

What is database alias db2?

1127

Suppose I have a program in cobol name ”careerride” and want to execute the program by jcl. Specify the process?

1115

What is scrollable cursor in db2?

1055

What is the abend command?

1032

What is bmp mode?

3541

If DB2 query returns in null value, how do you work with it in PL/1?

2364

Explain how are you going to remove duplicates from the file that is being read?

1007

What is defragmentation?

1107

Explain the difference between a schema and a subschema in idms?

832

How do you simulate the explain of an embedded sql statement in spufi/qmf?

1092

What is psb?

1032

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