IBM MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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IMS (143)
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REXX (60)
Assembler (68)
CLIST (6)
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MVS (25)
OS390 (10)
OS 2 (7)
VSAM (319)

IBM MainFrame Interview Questions

Questions Answers Views Company eMail

hi. This is Ram.i have one doubt.why can't we display comp-3 variables directly? let me answer quickly plez........

1 5972

In COBOL CALL-CALLING,if a program A is calling 3 sub- programs, dynamically, then it is said sub-programs will always will always in Initial Mode. My question is : Do we need to code CANCEL or (IS INITIAL) for dynamically called sub-programs or it is the property of Dynamically called pgms so every time sub-pgms are called they will be in initial mode. ***This question is only Dynamic call****, Please reply. Thank you in advance.

Wipro,

4 9908

can alternate index use in ESDS since it does not contain primary index? if yes can you explain?

iGate, Temenos,

2 7404

what is the steps followed in EXPLAIN Process or EXPLAIN command. (Explain is for identifying the optimized access path but how or what is the steps for doing the EXPLAIN)

IBM,

4 9201

can alternate index use in ESDS since it does not contain primary index? if yes can you explain?

Temenos,

3 9177

What is data trace system 2.0 used for?

5708

how many members can be created inside a single pds?

8 48345

When we create a physical dataset we specify dcb parameter block size.What is the use of Blocking?

4 8115

In a proc i will concatinate 4 dd statements.i want to overide 3 dd statement through jcl how?

3 7886

We are using 2 files , file one has data, file two is empty.Using jcl how can we find the other file is empty?

CSC, IBM,

9 23992

How to execute step2,step1, step3 if step1,2,3 are in order

CSC,

8 14507

i have a string of 80 chars i want to replace 4th char with "a"?

CSC,

3 9808

how can you copy records present in a flat physical file to a database file(physical file).please explain in rpg400 with a simple example

CTS,

1 5686

How to initialize 20,000 bytes in the Assembler..

Amdocs, IBM,

5 18255

How is Telon(CA-Telon) used to build map?

4681

Un-Answered Questions { IBM MainFrame }

What is qsam? How it is used?

795

Define base cluster?

1055

What are the cobol coding sheets?

1368

What is multithreading in jcl?

1534

How to receive data passed through jcl parm parameter in a natural program? How data definition is defined in the program?

1174

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.

2782

How do we specify index to include or not during bind process.

2180

What is host variable?

1116

How is next sentence and continue different?

1047

What is the function of currentdata option in bind?

1084

Receive consists of buffer option in it. What is the significance of this option?

1088

How can you do the explain of a dynamic sql statement?

1113

if we want to use a gdg which is already created by some job, then how to use the reference of the last generation in a jcl?

2358

What is meant by comp-3 and what is it used for?

1105

How to fetch the last row from the table in SQL (db2)?

1700

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