thanks for the tip, Saturn. as for running it being safe, i figure it should be safe as long as we use the sqlite client since it should know how to respect locks, concurrency etc. also since we are not modifying the data in the dbs, there shouldn't be consistency issues for apps that depend on the dbs. e.g. no listeners will be affected by sms db being compressed etc.

also, to avoid any other issues, i run this at 2am when there is unlikely to be any activity on the phone.