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 why do we use file-aid for seqential files?

1069

How to find occurrence of mu and pe fields in a file?

890

What is cobol coding sheet?

1232

Explain is it possible to code goto statement in natural? If yes please provide the syntax of the same?

978

Suppose you are processing an input file in a natural program and you want the program to fail if the file is empty. What command you use in natural to force it to fail?

1069

Explain difference between escape(top or bottom) and escape immediate(top or bottom?

1195

Explain how to ftp the natural program to desktop? (From mainframe to pc), is it possible?

1063

Tell me what type of files we can process thru file-aid?

938

What is a hyperdescriptor?

934

Explain how many work file we can code in jcl?

983

What is the difference between read work file 1 and read work file once? Why we are using work file once?

965

Explain the address converter?

1007

Explain the like inverted list?

950

Explain what happens when you issue a escape routine in a program? Will there be any compilation /run time erro?

971

Explain how to find occurrence of mu and pe fields in a file?

929

Un-Answered Questions { MainFrame }

explain sorting techniques in cobol program?

1200

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

2670

What is the latest version of ibm db2?

1269

How many maximum base registers we can have in a single program?

1107

What does a ROLLBACK do?

1520

Explain the function of job statement in jcl?

1209

pls send the docs of any telecommunication mainframe project

2166

I have a program with an Array of 5000 occurences which is being passed from 5 sub levels to the front end screen. Thess 5 programs using each 5*2 = 10 different arrays with size as 5000. This is causing the transaction to utilize more storage consupmtion. I am looking to reduce the storage consumption. As part of that initially i thought Dynamic array may solve my problem. After viewing the comments given i see its same as normal array. IS there any other way we can resolve this issue?

1650

Is mainframe an operating system?

932

Please tell me how to read the records from a file with load an array of size with error conditions(The logic answer for this question is ARR is array of 99 elements Z-ADD 0 IDX *LOVAL SETLL FILE READ FILE 99 *IN99 DOWEQ *OFF IDX ANDLT 99 ADD 1 IDX MOVE FIELD ARR,IDX READ FILE 99 ENDDO).So,Please give me the complete of this code.

2519

Explain how can the disposition of sysout datasets be set for an entire jobstream?

1083

What is rct?

1230

if we tried to move year part of *iso date into a field of length 3, what will happen ?

1292

how can you display specific subfile page on the screen in unequal subfile?

1153

How do you stop a db2 database in linux?

1012

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