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."?

1348

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?

1134

What is difference between rename and prefix?

1040

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?

1270

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?

1047

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

1032

What is comp?

1154

What is perform?

1100

How to detect record is locked in cobol/400?

981

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

1006

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?

1038

Un-Answered Questions { MainFrame }

Explain why do we use file-aid for seqential files?

1073

Suppose we have one database file and it is used by 5 programs and in 3 program we have to add some records in datbase file s what is the impact on other program?

1923

Tell about how do you eliminate the duplicates?

1006

What happens if both JOBLIB & STEPLIB is specified ?

1146

What is the use of the program list table?

1080

what operation is performed by job statement?

1128

How do I delete a table in database?

1022

Can we move alphanumeric incentive to the numeric field?

1051

What are the two ways in which dl/i interface can be invoked?

945

Are there any set of rules for the names of the steps used in a job? What are they?

1076

I want to join to input files and write the matching fields on to an output file but i dont want the output file a sorted one

2448

Can dynamic calls be used in CICS?

1140

Explain about few error status codes of idms.

883

How do I import a csv file into db2?

991

what is overlay?

1135

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