Multi threading in SQL Server CE

Question

I have developed a WPF application a unit of work and repository pattern. I am using SQL Server CE 3.5 SP2. My application works fine when using on single thread. But when I am using it on server, user connects through Remote Desktop Connection, and it becomes multi-threaded application which creates problems.

My database is in Environment.SpecialFolder.CommonApplicationData .

When two users simultaneously fire any transaction with database I am getting following errors:

Internal error: Cannot open the shared memory region.

and

Database already opened by a different user.

What is the best way to avoid this situation? Or if situation can not be avoided then what can be the best way to handle this exceptions..

Answer 1

As @marc_s has commented, you really should try to use at least SQL Server Express or even a higher version to enable multiple concurrent users to successfully access the database from your application simultaneously.

There is a similar question that was asked in the SQL Server CE in a multi user scenario - is this really, really stupid? post and that post has a good answer with more details that you should take a look at.