SQLite simultaneous reading and writing

Question

I\'ve read a lot of topics, but can\'t figure out answer for question: is it possible to read and write simultaneous?

I have background thread that updates some data

Answer 1

Starting with API 11 Android has support for WAL mode. It keeps original data untouched during transaction, so other threads can read when transaction is running. You can check my article for more details about WAL mode:

http://www.skoumal.net/en/parallel-read-and-write-in-sqlite/

You should also avoid running database queries in UI thread. It could always become sluggish and block your UI.