使用python访问Oracle数据库

import cx_Oracle
import os

if False:  #当Oracle服务是手动运行时，将False改为True
os.system('net start OracleVssWriterORCL')
os.system('net start OracleDBConsoleorcl')
os.system('net start OracleOraDb11g_home1TNSListener')
os.system('net start OracleServiceORCL')

orcl = cx_Oracle.connect('system/username@localhost:1521/orcl'.decode('utf8'))
cur = orcl.cursor()

sql = '''select * from test1
'''
cur.execute(sql.decode('utf8'))
records = cur.fetchall()
lines = len(records)
for i in range(lines):
print records[i]
cur.close()