SQLite database is locked?

I just tried to add row into SQLite database and text part includes "/" character.

After chat insert when I try to insert new row, app crashes and gives me this error on logcat:

Process: .MyService, PID: 17827
android.database.sqlite.SQLiteDatabaseLockedException: database is locked (code 5): , while compiling: PRAGMA journal_mode

Is it because slash characther or what? It worked well before that one row insertion or is my table corrupted?