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

what is record label is empty or standard in file description of data division?

HCL,

2 7689

what is label record is standard or omitted in file description of data division?

IBM, TCS,

3 26198

how would find total records in files using seqientional

HSBC,

1 9628

What is the difference between ITER and DO ? I know both are used to execute set of statements repeatedly, but what is the main difference?

CGI, Wipro,

2 18093

Hi, I am getting the error in RPG (All Record Formats for externally-described file ABCD ignored or dropped due to error; file ignored.) Please suggest any

Satyam,

2 28635

Can 88 level variable be declared in FD section..?

Infosys,

1 15788

I have 1000 rows in a db2 table.I want to update first 100 records,How do I do it?

CTS,

4 15904

How do I handle -911 (deadlock) error in a db2 program so that the program will never abend?

CTS, IBM,

3 21905

select distinct(empid),distinct(dept),name from EMP will the above query work?

CTS,

2 9276

We have an output dataset in job with disp parameter as SHR. Can we write data in that file dataset?

CTS, IBM,

2 9281

How can we increment subscript and index?

CTS, IBM,

1 8412

I have two tables A and B. Both tables are connected with SSN number as foreign key. I want to retrieve a column data from B table. How will you write a query?

CTS,

3 9054

While creating a table, by mistake you have given size of one field as 10. But as per requirement size should be 8. What is your next step?

CTS, IBM,

4 11493

We can allocate memory dynamically by using GET MAIN command my question is at what scenario we can't release this memory and reuse this same memory??

BirlaSoft,

3315

what are the paramater we cannot use in procedure?how many instream we can write in single jcl?can we call instream to catalog and ctalog to instream?

Satyam,

2 8702

Un-Answered Questions { MainFrame }

Define sort?

1261

How to update physical file using logical file with example?

1106

what disp parameter we mention for creation of temporary dataset so that we can use it in later steps?

1290

how many levels are there in a physical file?

1868

What is sysplex?

969

Explain what is the massinsert option?

1114

I have a subprogram B calling from mainprogram A.I have opened a cursor in A ,Can i fetch the same cursor in subprogram B , If yes , Please explain the reason?

2444

What is bind in db2?

1100

What statement marks the beginning of a job step; assigns a name to the step; identifies the program or catalogued or in-stream procedure to be executed in the step?

1163

When The Define Jcl Is Not Available, How Can You Get Information About A Vsam File's Organisation ?

1267

1. What is bound-by-call and bound-by-reference? 2. Where and why is *Nomain used? 3. What are the difficulties faced by programmers when using service programs? 4. Explain the different ways of parsing and compiling XML in iSeries.

6635

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

2739

Explain the difference between pseudo-conversational and conversational?

1152

Write a program to enter and display the names of students in a class using the occurs clause.

1262

What is database manager in db2?

1070

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