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

Explain the function of dd disp parameter?

1180

Explain the purpose of dd * statement in jcl?

1126

What are the 2 types of parameters in dd statement?

1214

What is mpp mode?

1188

Define ims (db/dc)?

1 1505

What is acbgen process?

1261

What is dbdgen process?

1272

What is psbgen process?

1213

Define psb?

1177

Define pcb?

1133

Explain the disadvantage of dynamic generation of acb?

995

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

1114

Explain the processing modes available in ims db?

3678

Explain the two ways in which dl/i interface can be invoked?

3597

What is bmp mode?

3604

Un-Answered Questions { IBM MainFrame }

Mention the length of physical storage of the given data types of db2 – date, timestamp, time

1144

what is SOC4 error?

1273

What do you know about jcl?

1212

How do you create a temporary dataset?

1250

What are different data types in cobol?

1396

Mention the location where the output received from explain statement is stored.

1178

What is notcat 2 - gs?

1520

What is the main function of key sequenced data set in vsam?

1032

What happens in bind step in a db2 program?

1017

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

2114

How many sections are there in data division in COBOL?

1188

What are the rules employed while naming the steps in a job?

1215

Explain the advantages of adabas?

1089

What is the difference between ooRexx and IBM's Object REXX for Windows?

1147

What are the types of the dfhmdf present in the cics?

1042

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