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 can we initialize a variable which is a constant in a LDA. Suppose I want to declare a variable #a N1(1:7) having constant values as 1,2,3,4,5,6, and 7 for respective occurance then how can we do that?

TCS,

5 13638

What is the difference between External subroutine and subprogram?

3 29462

What is full form of SPOOL

IBM, Wipro,

15 39672

what is main use of table space and index object? please its urgent

CA, Cap Gemini, CGI, CTS, EDS, HTC, IBM, Satyam, Syntel, TCS, Wipro,

5 16151

I HAVE FOLLOWING DECLARATION. 02. A PIC X(10) VALUE 'XXXXXXXXXX'. 02. B REDEFINES A. 05. C PIC X(3). 05. D PIC X(3). 05. E PIC 9(3). IN MY PROG, I HAVE MOVE 1 TO E. DISPLAY A. WHAT WILL BE DISPLAYED AS A RESULT OF THIS? PLEASE EXPLAIN THE ANSWER. THANKS.

Amdocs,

7 12012

What is an EXPLAIN in DB2. How and what is the steps followed in EXPLAIN command. Can all the queries be used in EXPLAIN command to check the performance.

IBM,

3 18572

what about F1 & F2 keys in xpeditor? And their functionalities?

2483

How to resolve SOC4 & SOC7 errors?

3 7310

what is the difference between FB & FBA?

2 16585

how to invoke subprogram in jcl?

2 5995

Hi Please try to be to-the-point. 1) How to INCLUDE a JCL segment in a JOB ? (A Small example) 2) What is SPOOL and what is SPOOL FULL ? and how to direct the output of a Jobstep to SPOOL ?

IBM,

3 7198

What do we mean by 'Virtual storage' for a dataset and for a JOBSTEP ? What is the significance of the following statement for a programmer 'Virtual storage results in program addresses being independent of the addresses that actually exist in a computer' ?

2024

What is 'mounting' of volumes ? Is there anything that a programmer can do in it ? How to find currently mounted volume ?

IBM,

2559

How to find the UNIT and VOLUME of a (a) KEPT (b) UNCATALOGED and (c) CATALOGED dataset - using (i) JCL and using (ii) ISPF ?

IBM,

2673

What is TimeStamp, What is TimeStamp error and What is the Abend Code for TimeStamp Error ?

IBM,

4 22329

Un-Answered Questions { IBM MainFrame }

What is meant by MDT? Furthermore, comment on FRSET and FSET ?

1131

Differentiate between the joblib and the steplib statements?

1434

State the maximum value up to which volumes can be inserted to an stogroup?

1041

My program has an array defined to have 10 items. Due to a bug, I find that even if the program access the 11th item in this array, the program does not abend. What is wrong with it?

1070

is it necessary that all versions of the gdg have to be of the same record length?

1143

i tried to copy some records from microsoft excel to as-400 physical file through "Bosanova" emulation. Out of 14000 records only 12000 records copies and subsequently programe started to hang. Then, i closed the program forcefully. I did' under stand the problem. Also when i try to compile the physical file it is showing as "The file in use". How to overcome this problem?

2531

explain sorting techniques in cobol program?

1198

How to dsect parameter is used in bms?

1284

what is the right time for using in-line perform?

1045

pls send the docs of any telecommunication mainframe project

2166

In job processing, what happens in conversion stage?

1192

What is ibm db2 used for?

1075

How to Get Information About the Tables?

1684

What is the use of db2 optimizer?

1110

Difference between cobol and cobol-ii?

1269

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