Opening a LUN File

The LUN file type is primarily associated with Lotus Notes.

LUN	File extension: LUN
	File type:	database file

What is a LUN file?

LUN files mostly belong to Lotus Notes. LUN files are Lotus Notes database files that hold structured data and design information for Notes applications.

Core Function: They store records, views, and schema details used in Lotus Notes environments.

Design Role: They also serve as Logical Database Designer files, a format supported by DB-MAIN tools from Logic Works.

To open or view a LUN file, use a Lotus Notes compatible application or the DB-MAIN tool (DB-MAIN website).
FilExt.com tip: Before editing, always backup the file to keep its data and structure intact.

How can I open a LUN file?

You need a suitable software like Lotus Notes to open a LUN file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your LUN file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a LUN file directly in the browser:. Just drag the file onto this browser window and drop it.

Online LUN Text Viewer

Choose your .lun file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert LUN files:

Lotus Notes
See the previous paragraphs to learn more about the main application. LUN files are often referred to as Lotus Notes databases because this type of file is primarily created or used by this software.
DB-MAIN (Project File) by REVER S.A.
DB-MAIN is a CASE tool dedicated to Database Application Engineering. It is designed to help developers and analysts in the development, reverse-engineering, reengineering, migration, integration, maintenance and evolution of data-centred applications.

Technical Data for LUN File Extension

File classification:

Database

Related files:

nsf, ntf, ldd, isl, oxo, dsw, db, mdb

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: LunarEdit.Document
EXEFile: %ProgramFiles%\BLINGS~1\LUNARE~1\LUNARE~1.EXE %1

a lun database file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with LUN files

Associate the LUN file extension with the correct application.
Update your software that should actually open database files. Because only the current version supports the latest LUN file format. Search, therefore, e.g. on the manufacturer website after an available Lotus Notes update.
To make sure that your LUN file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .LUN file online - secure, fast, and no downloads needed.