pip install oracledb 官方文档:https://python-oracledb.readthedocs.io/en/latest/user_guide/installation.html 2. oracledb使用 importoracledb config = {'user':'system','dsn':'127.0.0.1:1521/orcl','password':'123456'}withoracledb.connect(**config)asconnection:withconnection.cursor()ascursor: cu...
Database Resident Connection Pooling is a new feature of Oracle Database 11g. It is useful for short lived scripts such as typically used by web applications. It allows the number of connections to be scaled as web site usage grows. It allows multiple Apache processes on multiple machines to ...
在Oracle 数据库中,提供了两种主要的连接池技术: DRCP (Database Resident Connection Pooling) DRCP 为整个 CDB 配置一个连接池,或者为每个 PDB 配置一个隔离的连接池。 这一行为由参数 ENABLE_PER_PDB_DRCP 控制,该参数默认为 false。1 默认情况下,DRCP 为整个 CDB 创建一个连接池。该连接池由所有 PDB 共享...
在使用pycharm对远程oracle数据库进行访问时(本地未安装oracle),会出现64-bit Oracle Client library cannot be loaded: "The specified module could not be found"的错误。 (1)首先要做的是按照网上有的下载对应版本的instantclient 下载地址:http://www.oracle.com/technetwork/database/database-technologies/ins...
return connection def get_df(dsn_tns): try: c = connectToOracle(dsn_tns, config.username, config.password) df = pd.read_sql(config.stmt, con=c) return df except cx_Oracle.DatabaseError as ex: os._exit(1) c.close() if __name__ == "__main__": ...
As of mid-September 2021, the latest stable (“documentation”) release of Django, which is version 3.2, supported Oracle Database 12.2 and newer. Django requires thecx_OraclePython driver version 6.0 or higher to interact with the database. You can install the latest release ofcx_Oracleusing...
import cx_Oracle #连接数据库 db = cx_Oracle.connect('scott/scott@localhost:1521/orcl') #打开游标 cur = db.cursor() #执行SQL sql = " select sysdate from dual" cur.execute(sql) data = cur.fetchone() print('Database time:%s' % data) #提交、关闭游标 cur.close() db.close() ...
import cx_Oracle userName="ygss" password="ygss" with cx_Oracle.connect(userName, password, "192.168.101.171/oggspdb",encoding="UTF-8") as connection: cursor = connection.cursor() cursor.execute("insert into test_python values (:1, :2)",(1,'python')) connection.commit() 然后执行该脚本...
except cx_Oracle.DatabaseError as e: print("Problem connecting to Oracle", e) finally: # Close connection cursor.close() con.close() 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20.
图一,是《Fluent Python》一书对于with语句的解释,上面写的很清楚,with语句就是实现了上下文管理协议:with语句在开始运行时,会先调用上下文管理器对象的__enter__方法;在with语句运行结束时,不管with语句在运行过程中发生了什么异常,都保证会调用上下文管理器的__exit__方法。