# Create the connection object connection = MySQLdb.connect( host=os.getenv("HOST"), user=os.getenv("USERNAME"), passwd=os.getenv("PASSWORD"), db=os.getenv("DATABASE"), ssl_mode="VERIFY_IDENTITY", ssl={ 'ca': os.getenv("SSL_CERT") }...
对上图的解读:首先检查是否依次创建Connection对象(数据库连接对象)用于打开数据库连接,创建Cursor对象(游标对象)用于执行查询和获取结果;然后执行SQL语句对数据库进行增删改查等操作并提交事务,此过程如果出现异常则使用回滚技术使数据库恢 复到执行SQL语句之前的状态;最后,依次销毁Cursor对象和Connection对象,以避免多计算...
github.io/w4py/ Usage: First you need to set up the database connection pool by creating an instance of PooledDB, passing the following parameters: creator: either an arbitrary function returning new DB-API 2 connection objects or a DB-API 2 compliant database module mincached: the initial...
After SSL is enabled, an error message is displayed when a database is connected to using commands.Check whether the connection command uses SSL.Enable SSL and use an SSL
connection=pyodbc.connect('DRIVER={Teradata Database ODBC Driver 16.20};DBCNAME=192.168.253.131;UID=dbc;PWD=dbc;QUIETMODE=YES;') 配置步骤如下: (1)查看并拷贝odbcinst.ini模板到当前用户根目录,并改名称为隐藏文件.odbcinst.ini updatedb#创建或更新slocate命令所必需的数据库文件,执行时间可能会很长locate...
windows平台python链接GBase8t数据库 环境: 1)、安装GBase8t CSDK. 2)、配置ODBC 3)、安装python3.5 windows版 示例代码: E:\share>python Python 3.5.2 (v3.5.2:4def2a2901a5, Jun 25 2016, 22:18:55) [MSC v.1900 64 bit (AM D64)] on win32 ...
con: the underlying SteadyDB connection"""#basic initialization to make finalizer workself._con =None#proper initialization of the connectionifnotcon.threadsafety():raiseNotSupportedError("Database module is not thread-safe.") self._pool=pool ...
raise NotSupportedError("Database module is not thread-safe.") self._pool = pool self._con = con def close(self): """Close the pooled dedicated connection.""" # Instead of actually closing the connection, # return it to the pool for future reuse. ...
%database)#设置编码格式cur.execute('SET NAMES utf8;')cur.execute('SET character_set_connection=...
数据库驻留连接池是 Oracle Database 11g 的一个新特性。它对 Web 应用程序常用的短期脚本非常有用。它允许随着 Web 站点吞吐量的增长对连接数量进行扩充。它还支持多台计算机上的多个 Apache 进程共享一个小规模的数据库服务器进程池。没有 DRCP,Python 连接必须启动和终止一个服务器进程。