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

Suppose I have a file with three fields with data in the following format 1. empid - S9(4) COMP 2. empname - X(20) 3. empsal - S9(5)V(2) COMP-3 If I view this file, it will not be in a readable format. How to display the empid and empsal fields in a readable format without using COBOL program? What kind of SORT card will have to be coded?

4 9828

To check the locks , we use cmd WRKOBJLCK , but how we confirm whether it's objeck lock / member lock. I confused with the Lock type and Status values...Can any body please tell me ...

5 23742

I want my simple Green screen should refersh every 1 min ,How can I do it..? Please share the logic

2 7274

Is there a way to check for an empty file in JCL other than using IEBCOMPR and the command PRINT COUNT(1)?

8 27956

I have to change a program. This program is calling a subroutine mor than 100times within it. so will it have any performance issue? if yes than what changes i can make. Thanx for ur valuable answer.

2 6507

When a object will be locked & when a record will be locked? Plz explain.

2 8214

Can comments be specified at the very beginning of a jobcard? Will the JCL execute?

3 7932

How to display the index.(displacement from an array)

IBM,

4 17193

How to define the a field which accepts value till 99999.99 in db2

3 8760

Some times While checking MSGW for object / member / record locks ,I have seen it's locked by itself ...? How it happen and what action we need to perform if job is updating / writing a record....?

HSBC,

6 15390

Q1.How to read the Array? Q2.How to copy the content of one Array to another Array?

IBM,

4 13058

Q1.How we can copy the data of file one session to another session? Q2.how we can execute a loop infinitely in AS/400 coding? Q3.In ALDON tool,multitask is posible on a perticular object by the user?

CSC,

6 13472

1) What is ONCODE (Return code) in PL/1? 2) How to handle the ONCODE in PL/1? Please give me some examples?

IBM,

1 7899

How many steps we can overide in the proc's?

CS,

2 7238

How to retain the Duplicates in the one records?

CS,

3 10206

Un-Answered Questions { MainFrame }

How to retrieve rows from a db2 table in embedded sql?

1401

What is runstats utility in db2?

1029

by using cond parameter maximum 8 cond can be coded in single cond means ?explain

1474

Sync points cannot be requested by the application programs? State true or false

1174

What is the role of data manager in the db2 database?

1111

What is recovery parameters in define cluster command?

1066

how do you reference the fixed unblock file formats from cobol programs

1250

How to call one program from another program in RPG? please help me with the code

1738

What is database manager in db2?

1028

Which command is used to replace CDUP command in FTP IF i WANT TO USE SFTP?

2440

what does a file status of 02 on a vsam signifies?

1184

how can you prevent more than one user from accessing the same transient data queue?

1098

If DB2 query returns in null value, how do you work with it in PL/1?

2369

Explain referential integrity?

1113

What are different data types in cobol?

1328

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