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?

1091

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

1022

What is the difference between copybooks and subprocedures in as400?

1319

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

1089

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

1 1961

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

1 1777

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

1 2550

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

968

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

920

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?

913

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

1 2344

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?

901

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?

915

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 2297

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

1184

Un-Answered Questions { MainFrame }

How do you handle exception in PL/1?

1620

What is an ook-rec in idms?

822

what is the version of os/400 that we have?

1563

What are storage attributes of records?

866

What is the reason behind not using select * in embedded sql programs?

1061

Is the order of the when clause important in an evaluate statement? Is the order of the when clause significant in an evaluate statement?

919

What are literals?

1081

Many jcl statements contain specific values designed to direct and control the execution of the statement. What are these fields called?

1179

Where the QTEMP library will get created? if the the answer is QSYS, then howcome more than one job can create same library name(QTEMP) in QSYS? what is the uniqueness of QTEMP? For example, run the below command in different workstation WRKOBJ QSYS/QTEMP And take 8 in the option to check the description. both will have different info. so where(which LIB) exactly the QTEMP is stored?

8479

explain the use of dftwrt display keyword?

1696

When you are obtaining next within a set and get a end of set return code, on what record are you now current in idms?

759

What is ibm db2 used for?

1018

How do define dynamic array in cobol. how do you define single dimensional array and multidimensional array in your cobol?

1199

i want to store 20 digits . how will u do it in cobol ?

1350

What is the disadvantage of dynamic generation of acb?

963

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