How do I unlock a SQLite database?

Question

sqlite> DELETE FROM mails WHERE (`id` = 71);
SQL error: database is locked

How do I unlock the database so this will work?

Answer 1

I caused my sqlite db to become locked by crashing an app during a write. Here is how i fixed it:

echo ".dump" | sqlite old.db | sqlite new.db

Taken from: http://random.kakaopor.hu/how-to-repair-an-sqlite-database