On 6 Jul 2010, at 10:45pm, Kristoffer Danielsson wrote: > Q: How do I programmatically (through sqlite-APIs?) determine if it's time to > VACUUM a database?
It's never time to VACUUM a database. The VACUUM command is useful only if you have want to recover unused space from the database file. So if your database file once took up 5 Meg, and you deleted a lot of data from it and it now takes up only 2 Meg, you could recover 3 Megabytes of disk space. But how useful is that 3 Megabytes of space to you ? Are you going to use it for something really valuable ? And how long will it be before you get 3 Megabytes more data which will fill it up again ? If you're trying to get the database in shape to make copies, e.g. to burn it on a DVD or send it to customers, or put it on a device with limited space, then there might be some reason to use VACUUM. If not, then it's just a waste of resources. Simon. _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
