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

Explain about open switch business continuity software?

1083

How to read and write a single record into a file. I would like to use it to enter a single 8-character piece of information and use it to put it into a variable for processing in JCL. Thank you

1020

What is the difference between copybooks and subprocedures in as400?

1313

Why we have multiple data types in As400 and why we use numeric, packed, decimal, zoned the basic difference between this?

1086

Can we move X(7) to S9(7) COMP?

1 1960

Can we change a FB file to VB file in JCL? Please help

1 1771

Can a indexed file be accessed in arrival sequence in RPG?

1 2544

How do u design a physical file, when you have 2 Unique fields like for eg in A student file student ID and student examination no both are unique

965

How to write record if no field or the field are different in physical file in rpgle ?

915

When we have a file with Duplicate records and I want to read the unique record from the file. For example a file containing Emp Name as 'Ram' and there are 3 entries of it. So how to read a unique record from File?

909

How to read a record from file where there is multiple record occurrence is available?

1 2340

Assume 2 users are using the same file and first user updates some record in the file. Will the 2nd user will be able to see the updated record or not?

899

1. If there are two programs using same file and 2 users are using the file at the same time and what can be done to allow them both to access? 2. How can remove lock from the file for accessing it by both users?

908

If I have a file with 5 record and that file has 2 Key field and I want to read the unique record of the file then how can we achieve it?

1 2291

write a cobol logic. i have file that has 10 records .1 record go to first output file and second record goes to 2 output and etc

1179

Un-Answered Questions { MainFrame }

Can anybody tell what is tool used to generate the list of PROCS used in JCL to generate a PROCTREE

2412

What do you understand by the term “keyword” with respect to jcl and what is the opposite of the term?

1098

What is the result of open cursor statement?

1041

Every map is categorized into multiple fields, and there are three common working storage fields present for each of these respective fields. Mention those?

1012

How joinkeys helps in sort?

945

What is need of start 0?

1071

how JCL works?

1218

What is cobol coding sheet?

1146

What does a disposition of (new,catlg,keep) for a dsn mean?

1089

How to get the last record in vsam file in cluster? And how can you get the kids file records into your cobol program?

1149

How to know the particular record in pf with out reading?

1000

What will happen if both steplib and joblib are determined?

870

Explain the difference between record occurrence and record type?

2024

Explain the three location modes?

850

Can anyone provide me the source code for LOC(lines of code) counter written in REXX language which can run on IBM mainframe z/OS V1R4. The LOC counter should be able to count the comments,lines of code,blank lines in a COBOL program and JCL's

2585

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