SQLite unable to open database file (code 14) on frequent “SELECT” query

Question

I have following class \"Singleton\" to handle SQLite connection and to make sure to have 1 instance of connection for whole process/app:

public class DBCon         


        

Answer 1

I am using cursor for a big query where cursor hit the DB more than 1350 times by three seperate 'QUERY' within 800 milliseconds. So I got the error (android.database.sqlite.SQLiteCantOpenDatabaseException: unable to open database file (code 14)). I solved it by closing the cursor before start a new query. That resolves my problem. Hope it will work the more big query than mine.

String data_query = "SELECT * FROM test WHERE id= " + c_id + " AND memberId = " + memberId;           
Cursor cu_cu = userHelper.getData(data_query);
float cu_cu_count = cu_cu.getCount();
System.out.println("ALL ANSWER COUNT : " + cu_cu_count);
cu_cu.close();