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

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 13785

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

3 13682

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 9968

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

8 28297

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

3 8087

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

IBM,

4 17364

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

3 8907

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 7978

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

CS,

2 7347

How to retain the Duplicates in the one records?

CS,

3 10338

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 6260

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

2 10598

How to overide the symbol parameter in the jcl ?

UST,

3 10210

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

UST,

1 9312

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

UST,

3 10286

Un-Answered Questions { IBM MainFrame }

What is bms map?

1294

What is a set? How may sets be ordered?

903

Explain in DD statement what is the use of DCB parameter?

1189

In sms datasets, what is the function of the dd avgrec keyword?

1166

HOW to change the coloumns in XREF?

2076

What is an instance database?

1101

What is rebind in db2?

1124

Explain the mdt in cics?

1240

How does the jcl specify the job to os?

1225

execution of a subordinate module is caused by the use of the cobol verbs ------------in the superior module

1144

Explain the function of the relative record data set?

988

Explain the benefits you can get from mainframe connect?

1026

How to find all duplicate records?

1049

What is inspect in cobol ?

1359

What is the function of dd disp parameter?

1183

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