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

When output dataset space is required, what quantity categories are used?

1357

What parameter of the job statement is used to limit the cpu time consumed by the job?

1273

How can an in-stream dataset be terminated?

1337

What is the purpose of the dd keylen parameter?

1216

What is the purpose of dd?

1237

What statement marks the end of an in-stream or catalogued procedure?

1 1972

What parameters can be used to limit the number of records written to a sysout dataset?

1 1832

How can the submitting users racf authority be overridden in a job stream?

1264

Differentiate cobol and cobol-ii. (Most of our programs are written in cobolii, so, it is good to know, how, this is different from cobol)?

1112

What guidelines should be followed to write a structured cobol prgm?

1146

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

1197

What are the bind parameters ibm db2?

1047

what are bind concepts in db2 cobol?

1090

What are foreign keys in db2?

1101

Is it possible to combine uni-rexx with a compiled language in any application? What applications interfaces are there?

922

Un-Answered Questions { IBM MainFrame }

Is the primary key a clustered index?

1142

How can we find that module can be called – whether DYNAMICALLY or STATICALLY?

1229

have you already used rexx - even for limited purposes? Do you need to maintain a high level of productivity during your transition to unix?

953

Can one database have multiple instances?

1052

What is sysplex?

918

Which is the difference between delimited by size and delimited by space?

1088

What does EIB mean in CICS?

1170

What does it mean by Restart and Checkpoint in JCL ? How are checkpoints being taken and what is their usage ? How to use Checkpoint macro on a JOBSTEP ?

9746

Write the difference between hidam and hdam databases?

1005

what do you mean by idcams? Explain its purpose?

963

What do you mean by rollback?

989

how to convert the recors form vsam file to db2 table tru file aid

3258

What is the purpose of rollback and commit?

1190

Can we use DISP=SHR in output file in JCL

1415

Explain the purpose of dd dummy statement?

1213

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