Python3.6连接Oracle数据库的方法详解

本文实例讲述了Python3.6连接Oracle数据库的方法。分享给大家供大家参考,具体如下:

下载cx_Oracle模块模块:

https://pypi.python.org/pypi/cx_Oracle/5.2.1#downloads

这里下载的是源码进行安装

[root@oracle oracle]# tar xf cx_Oracle-5.2.1.tar.gz

[root@oracle oracle]# cd cx_Oracle-5.2.1

[root@oracle cx_Oracle-5.2.1]# python setup.py build

Traceback (most recent call last):

File "setup.py", line 170, in <module>

raise DistutilsSetupError("cannot locate an Oracle software " \

distutils.errors.DistutilsSetupError: cannot locate an Oracle software installation

报错解决办法:在root用户的.bash_profile文件中添加oracle_home的环境变量

export ORACLE_HOME=/u01/app/product/11.2.0/dbhome_1

PATH=${ORACLE_HOME}/bin:$PATH:$HOME/bin

[root@oracle cx_Oracle-5.2.1]# source /root/.bash_profile

[root@oracle cx_Oracle-5.2.1]# echo ${ORACLE_HOME}

/u01/app/product/11.2.0/dbhome_1

然后继续build:

[root@oracle cx_Oracle-5.2.1]# python setup.py build

running build

running build_ext

后面输出信息省略

[root@oracle cx_Oracle-5.2.1]# python setup.py install

running install

running bdist_egg

后面输出信息省略

按照完成之后,进行验证模块:

>>> import cx_Oracle

Traceback (most recent call last):

File "<stdin>", line 1, in <module>

ImportError: libclntsh.so.11.1: cannot open shared object file: No such file or directory

解决办法:在root用户的.bash_profile文件中添加LD_LIBRARY_PATH的环境变量

LD_LIBRARY_PATH=$ORACLE_HOME/lib:/usr/lib:/usr/local/lib

export LD_LIBRARY_PATH

[root@oracle cx_Oracle-5.2.1]# source /root/.bash_profile

[root@oracle cx_Oracle-5.2.1]# python

Python 3.6.1 (default, Jul 13 2017, 14:31:18)

[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>> import cx_Oracle

#!/usr/bin/python

#coding=utf8

# import module

import cx_Oracle as oracle

# connect oracle database

db = oracle.connect('scott/redhat@192.168.223.138:1521/oracle.test')

# create cursor

cursor = db.cursor()

# execute sql

cursor.execute('select sysdate from dual')

# fetch data

data = cursor.fetchone()

print('Database time:%s' % data)

# close cursor and oracle

cursor.close()

db.close()

[oracle@oracle scripts]$ python connectoracle.py

Database time:2017-08-04 10:20:39

#!/usr/bin/python

#coding=utf8

import cx_Oracle as oracle

def oraclesql(cursor):

fp = open(r'/home/oracle/scripts/tablespace.sql')

fp_sql = fp.read()

cursor.execute(fp_sql)

data = cursor.fetchall()

return data

if __name__ == '__main__':

ipaddr = "192.168.223.138"

username = "system"

password = "redhat"

oracle_port = "1521"

oracle_service = "oracle.test"

try:

db = oracle.connect(username+"/"+password+"@"+ipaddr+":"+oracle_port+"/"+oracle_service)

# 将异常捕捉,然后e就是抛异常的具体内容

except Exception as e:

print(e)

else:

cursor = db.cursor()

data = oraclesql(cursor)

for i in data:

print(i)

cursor.close()

db.close()

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