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

How do you handle empty files in a JCL ?

Wipro, Xansa,

3 17762

I have a JCL which 20 steps. How do I execute 17 th step alone (It should execute only 17ths tep.and it should not execute 18,19,20 steps??

IBM, Infosys, TCS, Xansa, Xchanging,

9 65242

What is a GDG? Why do we go for a GDG ? utility used to create GDG?

Xansa,

3 12273

What is a MODEL Paramater in GDG ?

Xansa,

2 8896

GDG Create syntax ?

Xansa,

4 16600

Max generations in GDG??

Xansa,

15 24709

I have 5 generations in my GDG. How do I code in the JCL to consider all the 5 versions of the GDG ?

Xansa,

5 22728

What is SORT ? How do we eliminate duplicate records ? How do I select some records using SORT ?

GE, Xansa,

9 36990

what is XSUM in some fields= none, xsum ??

Xansa,

7 68928

what is reuse parameter ?

Polaris, Xansa,

3 28598

What is VERIFY command ? when do you use this command?? What actually it does ??

Xansa,

2 30419

Create syntax for a VSAM file ?

Xansa,

2 24051

How did you refresh a VSAM file and how frequently you do it ?

CSC, IBM, Patni, Xansa,

3 11603

How do you prepare a COBOL + DB2 program from coading till execution ?

Amdocs, Xansa,

1 10656

what are the frequent DB2 abends did you encounter in your programs ?? What are different SQL abends ??

Xansa,

4 14186

Un-Answered Questions { IBM MainFrame }

How to change size of Initial number of records to *NOMAX for ALL PF files from perticular library, how can I do that

3234

What is the copy idms subschema-binds in idms?

847

what sort card you will use to copy the data from one dataset to another dataset?

1236

How vsam files are read in cics pgms?

1312

Hello All, We have requirment to Replace BMC Db2 Load product thru CA FAST LOADPlus product. Do anyone have JCL to for FAST LOADPLUS and what all are thing need to take in consideration.

2730

What is an instance in db2?

1043

Explain the function of the steplib dd statement?

1142

What is dbid used in adabas?

947

what is pdes?

1124

how do you reference the variable unblock file formats from cobol programs

1335

how do you define an altindx ? How do you use altindxs in batch, cics programs?

1083

What is the role of the data page in the db2 database?

1031

What is the motivation behind coding class parameter in job statement?

1191

How do you reference the fixed block file formats from cobol programs

1237

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

1241

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