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?

1037

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

1037

How many root segments do we have per database record?

1037

What information does a psb contain?

1112

Explain acbgen process?

1101

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?

1012

Which languages does ims support / application program languages?

1 1244

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?

987

Explain ims software environment?

979

Portfolio analysis application is an example of?

1138

Un-Answered Questions { IBM MainFrame }

I want to join to input files and write the matching fields on to an output file but i dont want the output file a sorted one

2448

Can you define aica abend?

1157

how do u conduct impact analysis?

2343

What is the advantages of using IDMS compared to other database systems?

1392

What is a set in idms?

840

How many bytes does a s9(7) comp-3 field occupy ?

951

suppose if you added a coloumn to db2 table, How would it be the Impact analysis?

2062

Is db2 free?

1094

What is buffer pool?

1107

How do you access an uncatalogued dataset in a jcl?

1216

What is the use of the program list table?

1080

Explain the three location modes?

900

What is Pic 9v99 Indicates in COBOL?

1258

What is the difference between the mro & isc?

1042

what is the right time for using in-line perform?

1045

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