cannot create Cursor because the system is out of memory. The following is the block of code

that is in question

public void insertCBJL(ArrayList<CBJLBean> cbjlList) {
        if (cbjlList.size() > 0) {
            mysql.beginTransaction();
            for (CBJLBean bean : cbjlList) {
                Cursor cursor = mysql.rawQuery(
                "select * from cbjl_table where yhh=?", 
                new String[] { bean.getYhh()});
                if (cursor.getCount() > 0) {
                    continue;
                }
                mysql.execSQL("insert into     cbjl_table(cbcid,...,scsyql) values (?,...,?)",
            new Object[] { bean.getCbcid(),...,bean.getScsyql() });
            }
            mysql.setTransactionSuccessful();
            mysql.endTransaction();
        }
    }

After the

for loop, there is a query statement that was originally inserted into the database in order for the data to be repeated. However, there is a big mistake. After being used, it is not closed, which causes the memory overflow.