OracleConnection conn = new OracleConnection(ConnectionString); //创建一个新连接 运行就报了如题的错误。 解决方法:连接字符串改为“string ConnectionString = “User=Username;Password=Password”;” 另: 查了很久才知道Data Source要自己手动去配(其实并不需要配置数据源),具体方法如下: 控制面板->系统和安...
可以在控制台下用 route print 查看本地的路由信息。 带有消息“发生 TNS 连接超时”的 SQL 错误 12170 ORA-12170 通常表示由于网络问题,与远程 Oracle 数据库的连接失败。当数据库服务器未响应客户端的请求时,或者存在阻止客户端与服务器之间通信的网络问题时,可能会发生此错误。 若要解决此错误,可以尝试对客户端...
1. 连接模式一的测试: shell> python import cx_Oracle dsn1=’模式一拷贝过来’ conn=cx_Oracle.connect(‘user’,'pwd’,dsn1) cursor = conn.cursor() cursor.execute(“select * from tbl_test”) print cursor.fetchall() 执行到conn=cx_Oracle.connect(‘user’,'pwd’,dsn1)时,一直等待连接,最后...
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor 之前用PL/SQL DEVELOPER和SQLPLUS 登录数据库都没有问题,就是应用程序通过JDBC连接Oracle时无法成功连接,出现ORA-12505错误listener does not currently know of S...TNS...
This makesmxODBC Connecta great basis for writingcross-platform multi-tier database applicationsand utilities in Python, especially if you run applications that need to communicate with databases such asMS SQL ServerandMS Access,Oracle Database,IBM DB2andInformix,Sybase ASEandSybase Anywhere,MySQL,Post...
McDonald’s Hong Kong leverages machine learning to improve the customer experience Data analyzed in Oracle Autonomous Data Warehouse helps company send the right e-coupons to the right people at the right times. Learn from your data: Perform association analysis with Python and pandas Identify rela...
用Navicat连接Oracle数据库时候,报了ORA-12514:TNS:listenerdoesnotcurrentlyknowofservicerequestedinconnectdescriptorsqldeveloper连接是正常的。 select INSTANCE_NAME from v$instance这个命令可以查询到sid。 结果是因为我的服务名不是 ORA-12514: TNS:listener does not currently know of service requested in connect ...
McDonald’s Hong Kong leverages machine learning to improve the customer experience Data analyzed in Oracle Autonomous Data Warehouse helps company send the right e-coupons to the right people at the right times. Learn from your data: Perform association analysis with Python and pandas Identify rela...
If no arguments are given, it uses the already configured or default values. For a complete list of possible arguments, see Section 7.1, “Connector/Python Connection Arguments”. Arguments: kwargs: Connection arguments. Example: cnx = MySQLConnection(user='joe', database='test')...
For a complete list of possible arguments, see Section 7.1, “Connector/Python Connection Arguments”. A connection with the MySQL server can be established using either the mysql.connector.connect() method or the mysql.connector.MySQLConnection() class: ...