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 22575

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

3 9064

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

Accenture, Cognizant, eFunds,

3 12577

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

HCL, iGate,

4 33379

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

HCL,

5 17351

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 17092

What exactly is a hyperdescriptor? How does it work?

3 12843

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

5 20791

what r the types of job control statements?

2 6351

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

4 8420

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

1 4741

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

3 7724

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

1 4156

what is the restart?hopw it is invoked?

1 5040

explain concatinating datasets?

1 4880

Un-Answered Questions { MainFrame }

to use the rewrite command, how should the vsam file be opened?

1306

what are bind concepts in db2 cobol?

1090

What is reorg and runstats in db2?

1213

How can you access qsam (seq) files from cics?

1123

What is the default page size of buffer pools?

1120

what are the various stages of job processing?

1279

when does a dataset go uncataloged?

1302

What is the contrast between delimited by space and delimited by size?

957

Difference Between Source Physical File & Physical File?

1072

What is non-conventional programs?

1082

how do you bind the cobol with db2

2789

Can I combine uni-REXX with a compiled language in my application? What application programming interfaces are available? For example, can I share variables between uni-REXX and a compiled language?

895

What is the use of tdq and tsq?

1111

Name and explain the location modes?

886

Where can program checkpoints be stored for use in a restart?

1433

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