android data路径创建路径失败,data/data目录下数据库文件打开失败

try {

db = SQLiteDatabase.openDatabase("/data/data/com.tianyisoft.exam/databases/question.db", null, SQLiteDatabase.OPEN_READWRITE);

} catch (Exception e) {

System.out.println("数据库读取错误。");

}

模拟器上运行提示是：

06-14 09:18:17.058: E/SqliteDatabaseCpp(23073): sqlite3_open_v2("/data/daat/com.tianyisoft.exam/databases/question", &handle, 2, NULL) failed

06-14 09:18:17.091: E/SQLiteDatabase(23073): Failed to open the database. closing it.