本文实例讲述了python使用 cx_Oracle 模块进行查询操作。分享给大家供大家参考，具体如下：

# !/usr/bin/env python
# -*- coding: utf-8 -*-
import cx_Oracle
from pprint import pprint
import csv
import time
import re
import binascii
print time.ctime()
try:
 conn = cx_Oracle.connect('tlcbuser/tlcbuser@10.5.100.232/tlyy')
# cursor = conn.cursor()
# xsql="select * from tlcb_mon_device a where a.ipaddr='10.3.244.1'"
# r = cursor.execute(xsql)
# print r
except Exception,e:
 print e
 print type(e)
 print str(e).decode('UTF-8').encode('GBK')
 print time.ctime()

C:\Python27\python.exe C:/Users/tlcb/PycharmProjects/untitled/a6.py
Mon Oct 22 10:35:59 2018
ORA-12170: TNS: "htmlcode">

# !/usr/bin/env python
# -*- coding: utf-8 -*-
import cx_Oracle
from pprint import pprint
import csv
import time
import re
import binascii
import os
os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'
print time.ctime()
try:
 conn = cx_Oracle.connect('tlcbuser/tlcbuser@10.5.100.232/tlyy')
# cursor = conn.cursor()
# xsql="select * from tlcb_mon_device a where a.ipaddr='10.3.244.1'"
# r = cursor.execute(xsql)
# print r
except Exception,e:
 print e
 print type(e)
 print time.ctime()

C:\Python27\python.exe C:/Users/tlcb/PycharmProjects/untitled/a6.py
Mon Oct 22 10:44:20 2018
ORA-12170: TNS: 连接超时
<class 'cx_Oracle.DatabaseError'>
Mon Oct 22 10:44:41 2018
 
Process finished with exit code 0

# !/usr/bin/env python
# -*- coding: utf-8 -*-
import cx_Oracle
from pprint import pprint
import csv
import time
import re
import binascii
import os
os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'
print time.ctime()
conn = cx_Oracle.connect('test/test@10.10.17.200/serv')
cursor = conn.cursor()
xsql="select 'aaa' from dual"
cursor.execute(xsql)
result = cursor.fetchall()
print result

C:\Python27\python.exe C:/Users/tlcb/PycharmProjects/untitled/rizhiyi/a7.py
Mon Oct 22 11:33:52 2018
[('aaa',)]
 
Process finished with exit code 0

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希望本文所述对大家Python程序设计有所帮助。