Excel as DB concurrent users

[Digitborn.com]

Hello,

How many concurrent users can connect to an Excel xlsx file using 'Provider=Microsoft.ACE.OLEDB.12.0'? Please, note that i shall use ONLY ReadOnly (understand SELECT SQL statements)!

I read it's 255 as an official statement from Microsoft. Is there any additional restriction by timing, i.e. per minute? In a forum thread i read there's something concerning per minute / concurrent users.

I have many topics about that but most of them involve writing/editing/locking records into the mix, where things are getting really different.


Additional details if it matters:
- i won't use writing/editing/deleting records;
- the Front End is a website;
- the hardware is a good to very good server equipment;
- the server is Microsoft Server 2008 R2 64-bit, but the OleDB driver is 32-bit (i know there's some 64-bit version from Microsoft);
- don't share opinions such as other database provider and how much better it is, because it's not the question here;

Additional questions, which are useful to know, but not that important as the main question:
- anybody share from a real experience/test case/production environment how many maximum concurrent users he achieved? how do you test/log that?
- please explain 'concurrent users' - I understand concurrent as - all the users should do the thing (in this case click a Search button) AT THE SAME TIME! Just a few milliseconds later (until the query executes) in the click of the button it will not be a concurrent call. Is that right? If it's not right or have a lot more than that can you give me some link on the 'concurrent users' topic.
- is 'concurrent users' differently measured between Excel vs Access?
- is 'concurrent users' differently measured between Access vs MS SQL Server database?

Thanks!, DMitar

 

[Digitborn.com]

Anybody?

 

[Digitborn.com]

Help!