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 are the kinds of job control statements?

3 7996

What is the meaning of keyword in JCL? What is its opposite?

1 7445

Describe the JOB statement, its meaning, syntax and significant keywords?

1 5033

Describe the EXEC statement, its meaning, syntax and keywords?

2 5832

Describe the DD statement, its meaning, syntax and keywords?

2 9287

What is a PROC? What is the difference between an instream and a catalogued PROC?

2 12563

What is the difference between a symbolic and an override in executing a PROC?

2 13631

What is RESTART? How is it invoked?

HSBC,

8 23517

What is a GDG? How is it referenced? How is it defined? What is a MODELDSCB?

3 9644

Explain concatenating datasets?

CTS,

2 9939

What is the difference between specifying DISP=OLD and DISP=SHR for a dataset?

2 9294

What is MOD and when would you use it?

3 7444

What are the keywords associated with DCB? How can you specify DCB information? What is the OS precedence for obtaining that DCB information, ie. where does the system look for it first?

2 8877

How do you designate a comment in JCL?

1 9364

What is the meaning of the EXEC statement keyword, COND? What is its syntax?

2 6007

Un-Answered Questions { IBM MainFrame }

How to take backup of table in db2?

1069

what is use of dcb parameter in dd statement?

1297

Explain about different table spaces.

1090

What is commit in db2?

1049

List out the three types of page locks that can be held.

1147

how are start and xctl different?

965

Tell about how do you eliminate the duplicates?

998

Can I send output of job to my remote device careerride123?

1129

What is the need of a secondary index in IMS?

1058

What is the primary aspect of CICS?

1128

Can we move alphanumeric incentive to the numeric field?

1042

Write a program to enter and display the names of students in a class using the occurs clause.

1202

What is ibm db2 used for?

1073

What is the meaning of Copy IDMS Subschema-Binds?

1683

What is buffer pool and list some of them?

1024

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