thanks for eplay mihai i am asking is there any function to check the database is opened or not opened? in a single thread?
thanks kris Mihai Limbasan wrote: > > kriscbe wrote: >> hi all, >> >> once the database file is opened is some other function how to check >> the >> db file is opened or not opened? >> >> is there any function like "isopen()" in sqlite??? >> >> thanks >> kris >> >> > No, there is no such function, it's the application's responsibility to > track the database connections it has opened. > I'm reproducing below part of a mail message sent to the list yesterday > which might clarify the situation: > > > Doug Porter wrote: > > > Is there a way to get a list of connections that are opened on a > > > particular SQLite database file? > > > > > > Our software uses SQLite to save our data and we want to warn a user > > > who opens a file that is already opened by another user. I tried a > > > homebrewed approach (keep a table of open connections manually), but > > > ran into a couple places where that won't work. > > > > > > Any help would be greatly appreciated! > > > > > > doug > > Mihai Limbasan wrote: > > The database connection object is handled by the SQLite database > engine and stored in memory allocated by the database engine. > > SQLite does not use a client-server architecture but is completely > contained in a library that you link with your application, thus > SQLite's functions run within your application process and the database > connection objects exist on a per-process basis. > > Your question seems to suggest that your users might run multiple > instances of your application, potentially on separate machines. If that > holds true, there is no way to get a list of connections from SQLite > since those connection objects belong to separate processes potentially > on separate machines. You will have to use an IPC mechanism of your > choice to handle communication between instances of your app. > > Hope this helps. > > _______________________________________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > > -- View this message in context: http://www.nabble.com/how-to-check-whether-the-database-file-opend-or-closed--tp19101495p19103046.html Sent from the SQLite mailing list archive at Nabble.com. _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
