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

COBOL (1072)
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IMS (143)
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Natural (81)
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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

I have 2 steps in my exec statement , in first step I am creating a gdg, and the output of this step is going into second step as a input, and this second step is abended , now how could i approach in this case.

Bank Of America,

5 13592

I have a File that has duplicate records. I need only those records that occur more than thrice.

3 13538

Suppose I have a file with three fields with data in the following format 1. empid - S9(4) COMP 2. empname - X(20) 3. empsal - S9(5)V(2) COMP-3 If I view this file, it will not be in a readable format. How to display the empid and empsal fields in a readable format without using COBOL program? What kind of SORT card will have to be coded?

4 9810

Is there a way to check for an empty file in JCL other than using IEBCOMPR and the command PRINT COUNT(1)?

8 27926

Can comments be specified at the very beginning of a jobcard? Will the JCL execute?

3 7928

How to display the index.(displacement from an array)

IBM,

4 17177

How to define the a field which accepts value till 99999.99 in db2

3 8749

1) What is ONCODE (Return code) in PL/1? 2) How to handle the ONCODE in PL/1? Please give me some examples?

IBM,

1 7891

How many steps we can overide in the proc's?

CS,

2 7227

How to retain the Duplicates in the one records?

CS,

3 10194

Hi, I want to create alternate index on VSAM file.my file structure is ex: RoomID pic x(7) R000001 Floor pic a((6) First RoomNo pic x(2) FA1 Occupied(yes/no) pic a(3) Yes Occupied Batch pic x(10). Maths i want to create alternate index on floor,roomno fields.can i create alternate index on both the fields.and tell me how to create.

1 6178

How would I code JCL to copy a gdg data set G001v00 and create a gdg Data set G001v01

2 10468

How to overide the symbol parameter in the jcl ?

UST,

3 10071

I have three files for one step i need to override the third file how to do that in jcl?

UST,

1 9203

How to retrive the 9th records out of ten records using the cobol program ?

UST,

3 10111

Un-Answered Questions { IBM MainFrame }

What is use of restart and how to use it?

1317

Which is not true about evaluate statement

2458

What is eib?

1172

What does reorg do in db2?

1030

Explain packages.

1114

What is declare cursor?

1125

Give the syntax of job specifying jcl statement.

1150

when an xctl is done, does the tranid change ? Is a new task created ? Does it cause an implicit syncpoint to be issued ?

1229

What is the maximum number of segment types allowed for a single database?

1131

Many jcl statements contain specific values designed to direct and control the execution of the statement. What are these fields called?

1228

when does a dataset go uncataloged?

1311

Explain about set currency?

869

How to read and write a single record into a file. I would like to use it to enter a single 8-character piece of information and use it to put it into a variable for processing in JCL. Thank you

1076

For rewrite, why is it mandatory that file needs to be opened?

1109

Give a brief description of db2 isolation levels?

1074

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