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 the maximum number of fields allowed per segment and what is the maximum number of fields per database?

1040

What is the advantage of creating the acbs well ahead of time?

1038

How many root segments do we have per database record?

1039

What information does a psb contain?

1112

Explain acbgen process?

1105

What are the main control blocks available in ims db?

1095

What are the advantages and disadvantages of a hierarchical database?

1144

What is ims (db/dc)?

1049

What is dbd?

1014

Which languages does ims support / application program languages?

1 1250

What is meant by mpp mode?

1105

What is meant by batch dl/i mode?

1 1464

What is the maximum number of levels allowed in ims db?

991

Explain ims software environment?

982

Portfolio analysis application is an example of?

1138

Un-Answered Questions { IBM MainFrame }

What is the difference between dbm cfg and db cfg file in db2 ?

1539

Define where and its usage?

1009

What is difference between static call and dynamic call?

1031

what is the difference between COBOL2 AND COBOL390?

3058

What is temporal table in db2?

1041

What is task control?

1167

What does a rollback do in idms?

967

What is the connection string to connect to the DB2 Database ?

1128

What information does a psb contain?

1112

What is job control language?

1093

What are some uses of the evaluate statement? Explore the syntax of the evaluate statement?

973

State the uses of syspring, sysin, sort fields, sum fields and dummy.

1090

What does the 'cemt:cics' transactions do?

1204

What is timing concept in mainframe?

2209

How to create 1 ddm that fetches 3 adabas files simultaneously?

929

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