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

How are write I/Os from the buffer pool executed?

1 4170

What is the syntax of SELECT statement when embedded in a COBOL program?

2 10110

What is ACQUIRE/RELEASE in BIND?

Cognizant,

3 26876

Can All Users Have The Privilege To Use The SQL Statement Select (DML)?

1 4073

What are foreign keys?

1 4871

What is JOIN and different types of JOIN.

IBM,

2 12594

What does DSNDB07 database do?

2 12242

What is a DB2 access path?

1 7185

What is a recovery log?

1 4827

What is the COBOL picture clause of the following DB2 data types: DATE, TIME, TIMESTAMP?

3 20428

How does DB2 store NULL physically?

2 10961

Explain the use of the WHERE clause?

1 4120

How can you quickly find out the number of rows updated after an update statement?

CSI, CTS,

1 9558

How could one combine a set of incremental image copies into a single copy?

1 4435

When one binds a PACKAGE ( of a plan ) what package information is stored and where it is stored?

3 8460

Un-Answered Questions { MainFrame }

how do I preserve and clean the array?

1163

What are the pertinent COBOL

2580

How is next sentence and continue different?

996

Explain how to move cursor to a particular field when position is not known?

1018

what is the use of JCL?

1175

WHICH REPLY CODE IS USED BT sftp ? ... (e.g.226 is used by FTP IF FILE IS TRANSFERED)

2178

What is rct?

1248

A table has two indexes defined. Which one will be used by the SEARCH?

1294

I have a cobol db2 program(PGM A) where other program (PGM B) will call this program and passes some 50 fields data to PGM A. PGM A has some layout in which it receives the data from PGM B. And this layout has been copied in the linkage section pf PGM A. After getting the data, PGM A writes the data in a flat file in the same layout which it receives from PGM B. PGM B is a simple COBOL pgm. Please provide a JCL to run these programs.

2373

Can you define cemt?

1080

what is the necessary keyword for non-join logical file?

1850

what is use of space parameter in dd statement?

1294

can a join logical file be updated?

1037

what is the use of the file status clause in the select statement in vsam?

1132

is it compulsory commitment control in journal?

2488

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