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 does a disposition of (new,catlg,keep) for a dsn mean?

1090

What are steplib and joblib? What for they are used?

1154

Is condition checking possible in jcl? If yes, how?

1233

What are steplib and joblib?

1125

Suppose I have five jobs to do. But I want to hold one?

1086

Is it possible to define dd statements as you want?

1076

How to pass data to a program that is coded in an exec statement?

1283

What is job control language?

1042

What is the difference between the positional and keyword parameters? Give examples.

1206

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

1067

What are hierarchy levels in jcl?

1479

How dummy is used in jcl?

1096

For what purpose steplib and joblib are used ?

1083

How to alter the parameters for the existing gdg?

1151

I have a job called careerride and some steps in it as step1,step2. But I want to execute step2 before step1 ? How do I do that?

1332

Un-Answered Questions { IBM MainFrame }

Explain the difference between a physical bms mapset and a logical bms mapset?

948

how can the same proc be re-used and called by many jobs?

1453

What is redefines clause in COBOL?

1257

What is meant by dclgen?

1071

what parameter in the define aix option is used to determine the maximum number of duplicate keys allowable ?

963

what is the sqlcode -501

12958

What is amode(24), amode(31), rmode(24) and rmode(any) (applicable to only mvsesa enterprise server) ?

1132

What is the role of union all and union

1085

I have to write to a outfile where the number of records in that file should be the header of that file using IMS.. can anyone help me in this issue

2495

What is phantom read in db2?

1090

What is dbrm? What it contains? When it will be created?

1006

Explain the like inverted list?

913

What is load replace in db2?

943

What is buffer pool in the db2 database?

1058

Would you specify freespace ce for an esds?

1025

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