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 this error: "all record formats for externally-described file abcd ignored or dropped due to error; file ignored."?

1347

What is the difference between iter and do? We know both are used to execute set of statements repeatedly, but what is the main difference?

1025

Why we sometimes use same file name in file and tofile in ovrdbf and sometimes different?

1133

What is difference between rename and prefix?

1038

How to debug a batch job when it is in messagewait(mswg) status. I know the steps for batch ebugging, but im confusing with when we submit any job for batch debug we put in held state. So here also do same thing or any other way?

1268

What does the following code do? Ap wkur,=p5 where wkur is a label?

1089

What is need of start 0? In steed of can we use anyother numerics? If we use what will happen?

1045

How do you round the addition or subtraction of two numbers in assembler?

1029

What is comp?

1154

What is perform?

1097

How to detect record is locked in cobol/400?

981

What are fillers? What is the actual use of fillers? With mall/simple example?

1005

How to update data area in cobol 400 program?

1048

How to detect record is locked in cobol/400? What is the solution for that?

971

What are fillers?

1035

Un-Answered Questions { MainFrame }

How to Provide Column Names Using the DRAW Command ?

1533

Mention a credible reason why select* is never given preference in an sql program that has been embedded.

1194

. How to know why the OPM job is in MSGWAIT state?..WHAT COULD BE THE REASON FOR it?

7953

Explain the input procedure and output procedure?

915

What are s0c1, s0c4, s0c5, s0c7 and socb?

1176

What are the main control blocks available in ims db?

1094

How do define dynamic array in cobol.

1135

EXPLAIN MAIN FRAME TESTING PROCESS...HOW TO FIX THE MAINFRAME BUGS?

2544

What are various loop types supported by rexx?

947

Add a field to screen when what's the flow of impact?

2913

Can you define an alias?

962

what are the three types of keywords associated with printer file ?

1697

INREC AND OUTREC? HOW TO SPLIT 5K RECORDS TO DIFFERENT FILES IN A FILE IN COBOL? RESTART IN COBOL-DB2? ISOLATION LEVELS?

868

What tools are available in PL/1?

1525

How do you eliminate duplicate values in db2?

1190

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