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

IBM MainFrame (5234)
IBM AS400 (1355)
IBM PL/1 (31)

MainFrame Interview Questions

Questions Answers Views Company eMail

How can we read a particular record from the database file which is not having DDS (Flat File). For example, there are 100 records in the flat file. How can we retrive 15th record in RPG/400 program (Without using CL)

CTS, IBM,

6 22596

Can there be 2 job statements in a JCL? If yes what is the purpose of doing tha?

3 9082

can any one pls tell me some differences between a LF and command OPNQRYF?

Accenture, Cognizant, eFunds,

3 12587

Can we use OVRDBF command without using of OPNQRYF ? Or can we use OPNQRYF command without using of OVRDBF command ?

HCL, iGate,

4 33387

Which is better LF or OPNQRYF ? When should we use LF and when should we use OPNQRYF ?

HCL,

5 17366

with out sorting how to copy records from one file to another file using jcl.Mean I have one input file in which the record are like 1,6,5,4,2,3(for example) and i want to copy to output file from top to bottom(without sorting) like 3,2,4,5,6,1.so I want the JCL for this.cna any one can answers?

TCS,

1 17104

What exactly is a hyperdescriptor? How does it work?

3 12857

What does it mean when EIBCALEN is equal to 1 and other values?

5 20800

what r the types of job control statements?

2 6362

what is the meaning of keyword in jcl?what is is opposite?

4 8431

describe the job statement, its meaning,syntax and significant keywords?

1 4750

describe the exec statement,its meaning ,syntax and keywords?

3 7735

describe the dd statement,its meaning,syntax and keywords?

1 4160

what is the restart?hopw it is invoked?

1 5046

explain concatinating datasets?

1 4886

Un-Answered Questions { MainFrame }

What is the difference between a binary search and a sequential search? What are the pertinent cobol commands?

1109

an access path may be in which sequence?

1157

What does db2 mean?

1017

List some fields from sqlca?

1058

Which is the difference between delimited by size and delimited by space?

1091

Is mainframe an operating system?

933

Explain how can the submitting users racf authority be overridden in a job stream?

1126

all i need to know about cmpseqdat parameter in cmppfm, how it works and can we retrieve line sequence and date from the output?

2874

What is drop table?

1010

distinguish between terminating a program through seton lr and return?

1100

HOW to change the coloumns in XREF?

2006

what are the limitations of cl (compare to rpg) ?

2317

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

2676

How to create db2 table in mainframe?

1154

Categorize the mainframe manual testing?

985

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