Database is locked in Qml

[krille-chan]

• Device: Nexus 5, Oneplus One but probably all devices
• Channel: Stable
• Build: Confirmed on OTA-3, OTA-4 and OTA-5

Steps to reproduce

Build a new app which is using sqlite with Qml storage. Then change the name of the database, the version of the database and the version of the app and update the app.

Expected behavior

App should restart without problems.

Actual behavior

The app crashes when trying to access the SQlite database. The problem is solved when you restart the app. Sometimes you need to reboot the device.
It is not a very critical bug but it happens sometimes on updates and confuses the user. You can catch this error with:

try {
            db.transaction(
                function(tx) {
                    var rs = tx.executeSql( transaction )
                }
            )
        }
        catch (e) {
            if ( e.code && e.code === 2 ) {
                console.log("Database locked!")
            }
        }

Logfiles and additional information

Database is locked

[krille-chan]

This issue should be solved in the openstore by closing an app before start the upgrade. So I have talked with Brian about this.