數據庫鏈接池

嘗試不同的寫法

class sql():
    # 對SQL語句進行封裝，當SQL語句比較多的時候，咱們不用重複寫鏈接語句
    def res(self):
        self.cursor.execute("select process,client_process,status,sequence#,block# from v$managed_standby where process='MRP0'")
        row = self.cursor.fetchone()
        print row


# 集成父類
class Main(sql):
    # 鏈接信息
    def conn(self):
        self.conn = cx_Oracle.connect('trade/oracle@192.168.30.134/orcl')
        self.cursor = self.conn.cursor()
        self.res()

    def run(self):
        self.conn()


if __name__ == '__main__':
        b = Main()
        b.run()