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Why did my Android version of SQLite DB suddenly spoil?

Suddenly, it seems like the database used by my application is corrupted. I did not change the database structure, but I redeployed the application several times on my device today.

This throws the following exception.

E/Database(14281): CREATE TABLE android_metadata failed err=26 ..
E/Database(14281): Failed to setLocale() when constructing, closing the database
E/Database(14281): android.database.sqlite.SQLiteException: file is encrypted or is not  a database
E/Database(14281):  at android.database.sqlite.SQLiteDatabase.native_setLocale(Native  Method)
E/Database(14281):  at android.database.sqlite.SQLiteDatabase.setLocale(SQLiteDatabase.java:1848)
E/Database(14281):  at android.database.sqlite.SQLiteDatabase.<init>(SQLiteDatabase.java:1798)
E/Database(14281):  at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:798)
E/Database(14281):  at   android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:857)
E/Database(14281):  at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:850)
E/Database(14281):  at android.app.ApplicationContext.openOrCreateDatabase(ApplicationContext.java:539)
E/Database(14281):  at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:193)
E/Database(14281):  at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:98)
E/Database(14281):  at com.ecs.android.gps.storage.DBAdapter.open(DBAdapter.java:75)

The database is initialized using the SQLLiteOpenHelper class.

public DBAdapter(Context ctx) 
{
    this.context = ctx;
    DBHelper = new DatabaseHelper(context);
}

private static class DatabaseHelper extends SQLiteOpenHelper 
{
    DatabaseHelper(Context context) 
    {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase db) 
    {
        db.execSQL(DATABASE_CREATE);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, 
    int newVersion) 
    {
        Log.w(TAG, "Upgrading database from version " + oldVersion 
                + " to "
                + newVersion + ", which will destroy all old data");
        db.execSQL("DROP TABLE IF EXISTS location_history");
        onCreate(db);
    }
}
  • I basically open / close the database and cursors for each operation.
  • Some articles point this way, but for an Android app, does it make sense to open a database connection all the time?
  • I can imagine it bring much more resources to open / close it every time.
  • There are several activities and services that access the database. (maybe at the same time)

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