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

Brief description of inline procedure of jcl.

1192

How would you understand error(execution phase)?

1184

What are the difference between jcl and jes?

1553

How gdg are concatenated?

1076

What is check constraint. Explain with example.

1053

What is dbrm? When it will be created?

978

Is it possible to alter a table – for example adding a column, when another user is accessing or updating some columns?

1046

What is dbrm? What it contains?

1123

What does sqlcabc has?

1006

What is the difference between cursor stability and repeatable read isolation levels?

1133

How to execute stored procedures?

1076

What is sqlca?

1010

Are view updateable?

994

How and when does the db2 enforces the unique key?

1046

What are sqlcodes –803,-805, -811, -818,-904,-911,-913,-101, +100?

1129

Un-Answered Questions { IBM MainFrame }

How do I delete a column in db2?

1066

Particular area has been affected in cics screen, what is the process to find?

9778

What is database alias db2?

1074

How to move a field DT 9(8) of input file to DT 9(8) COMP-3 in output file in ezytrieve? in the output file entire dt is not moved.If any answer plz reply as soon as possible.

2168

What is frset?

981

2 input fles: 2 flat files, with different number of records. both are having unique key for each record and already sorted in ascending order . match these files using unique key and in output only matching key value has to be written. please procide cobol logic

2558

Explain the difference between external subroutine and subprogram?

1146

What is the function of dd disp parameter?

1087

What is db2 bind process?

1197

What is the difference between a binary search and a sequential search? What are the pertinent cobol commands?

1071

What is dclgen in db2?

1091

What is cobol?

1207

what is an mdt (modified data tag)? Its menaing and use?

1050

What is the term conversational programs means?

965

OPEN INPUT StudentFile READ StudentFile AT END SET EndOfStudentFile TO TRUE END-READ PERFORM UNTIL EndOfStudentFile DISPLAY StudentId SPACE StudentName SPACE CourseCode SPACE YOBirth READ StudentFile AT END SET EndOfStudentFile TO TRUE END-READ END-PERFORM CLOSE StudentFile STOP RUN what will be output

2464

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