dsn_str=cx_Oracle.makedsn(ip, port, instance) con=cx_Oracle.connect(user=username, password=password, dsn=dsn_str) cursor=con.cursor() cursor.execute(drop_table) cursor.execute(create_table) query_string="INSERT INTO dbaastable(test_value) VALUES ('"+insert_value+"')" # print query_stri...
独立连接由cx_Oracle.connect()或其别名创建cx_Oracle.Connection(),其参数如下所示 cx_Oracle.connect(user=None, password=None, dsn=None, mode=cx_Oracle.DEFAULT_AUTH, handle=0, pool=None, threaded=False, events=False, cclass=None, purity=cx_Oracle.ATTR_PURITY_DEFAULT, newpassword=None, encoding...
# 创建数据库引擎 engine=create_engine('sqlite:///example.db')# 创建基类 Base=declarative_base()# 定义模型类classUser(Base):__tablename__='users'id=Column(Integer,primary_key=True)name=Column(String)age=Column(Integer)# 创建表 Base.metadata.create_all(engine)# 创建会话 Session=sessionmaker(...
典型的关系型数据库包括MySQL、Oracle、SQL Server等。关系型数据库的优点包括数据一致性、结构化查询语言(SQL)的支持以及强大的事务管理。 非关系型数据库(NoSQL): 非关系型数据库不采用传统的表格结构,而是使用其他灵活的数据存储模型。这种数据库类型包括文档型数据库、键值对数据库、列族数据库和图形数据库。No...
当第一条 SQL 语句通过 cursor.execute() 方法传给数据库时,一个事务就启动了。当没有其他事务已从该会话启动时,可以使用 db.begin() 方法显式启动一个新事务。为了获得最高一致性,当连接对象被关闭或删除时,cx_Oracle 会默认回滚所有事务。 cx_Oracle.Connection.autocommit 属性仍可设置为 1,从而使 Oracle ...
Oracle recommends not to use these alternative names. Table 7.1 Connection Arguments for Connector/Python Argument NameDefaultDescription user (username*) The user name used to authenticate with the MySQL server. password (passwd*) The password to authenticate the user with the MySQL server. password...
connection=oracledb.connect( config_dir=r"C:\opt\OracleCloud\MYDB", user="admin", password=password, dsn="db2024_low", wallet_location=r"C:\opt\OracleCloud\MYDB", wallet_password=wallet_pw, https_proxy='myproxy.example.com', https_proxy_port=80) ...
Theconnect()method is passed the username "pythonhol", the password "welcome" and the connection string. In this case, Oracle's Easy Connect connection string syntax is used. It consists of the IP of your machine and the DB service name "orcl". ...
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(ods_ab) File "/xxx/oracle_util.py". line 11, in get_oracle_conn return oracledb.connect(user=db infol'user'], password=db_infol'password'], File "/home/xxx/local/lib/python3.8/site-packages/oracledb/connection.py", line 1020, in connect return conn_class(dsn=dsn, pool=pool, ...