Python3.6连接Oracle数据库的方法详解
时间：2020-12-19 11:25:14|栏目：Python代码|点击： 次
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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