According to these messages on the mailing list there is no way to check the number of open connections through code or database. API is missing.
According to this post , if you are running on a POSIX system, you can use the command lsofto count how many processes the database has opened.
Windows, Process Explorer :
- Process Explorer "" → DLL...
- sqlite "" ( "Enter" ).
- . "" Process Explorer.
- , ""