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 22343

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

3 8879

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

Accenture, Cognizant, eFunds,

3 12406

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

HCL, iGate,

4 33182

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

HCL,

5 17136

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 17020

What exactly is a hyperdescriptor? How does it work?

3 12687

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

5 20584

what r the types of job control statements?

2 6233

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

4 8256

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

1 4639

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

3 7543

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

1 4075

what is the restart?hopw it is invoked?

1 4942

explain concatinating datasets?

1 4795

Un-Answered Questions { MainFrame }

How to call one program from another program in RPG? please help me with the code

1672

Suppose if there are a set of statements and each has a word “value” in it, if I want to display all these statements so that the word “value” is aligned, then how do I code this in rexx?

899

what is the facility that allows mainframes to be partitioned into lapars? A.z/os b.pr/sm c.vitual storaged.coupling facility

1147

What are the different data types in cobol?

1336

Define cedf?

895

how do you use commitment control in rpg?

1227

what is message subfile?

1667

) how do u code after getting data?

2080

Is it possible to left uncode disp?

1149

What is find and read operation in adabas file?

807

what is the difference between COBOL2 AND COBOL390?

2990

Explain the difference between start and xctl?

989

Why did you choose to work with ibm mainframe cobol programming?

1038

How can the disposition of sysout datasets be set for an entire jobstream?

1280

What is image copy in db2?

946

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