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

Name some of the JCL statements that are not allowed in procs.?

1 16026

What is primary allocation for a dataset?

4 15276

What is the difference between primary and secondary allocations for a dataset?

8 48813

How many extents are possible for a sequential file ? For a VSAM file ?

3 18808

What does a disposition of (NEW,CATLG,DELETE) mean?

3 19921

What does a disposition of (NEW,CATLG,KEEP) mean?

Cap Gemini,

1 13328

How do you access a file that had a disposition of KEEP?

3 19245

MOD, DELETE; What does a disposition of (,DELETE) mean ?

3 12117

What is the DD statement for a output file?

3 10173

What do you do if you do not want to keep all the space allocated to a dataset?

2 7068

What is DISP= (NEW,PASS,DELETE)?

HCL,

3 32333

How do you create a temporary dataset? Where will you use them?

IBM,

2 22930

How do you restart a PROC from a particular step?

5 43280

How do you skip a particular step in a proc/JOB?

CSC, CTS,

5 31001

A PROC has five steps. Step 3 has a condition code. How can you override/nullify this condition code?

IBM, Wipro,

5 39737

Un-Answered Questions { IBM MainFrame }

What is bms map?

1213

How you can read the file from bottom?

1162

Please send me the real time scenarios in Mainframe Project... i.e., it may be in banking or insurance sector or any other no problem..... please send your mails to krishnaprasadbvs@gmail.com

11757

What is the need of running runstats in the test environment?

1082

What are the advantages of vsam over isam?

1140

Explain the difference between the into and the set option in the exec cics receive map command?

1133

Is db2 a database?

984

How converted the natural coding for adabas

3291

what is unit testing ? on which basis you will write test case ?

2028

What is the use of db2 optimizer?

1120

What happens if both JOBLIB & STEPLIB is specified ?

1156

What are the cics commands associated with task control?

1005

How to view db2 table structure?

1022

Are there any set of rules for the names of the steps used in a job?

1138

Explain the data storage?

1015

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