Python3.6連接Oracle數(shù)據(jù)庫的方法詳解

本文實(shí)例講述了Python3.6連接Oracle數(shù)據(jù)庫的方法。分享給大家供大家參考，具體如下：

下載cx_Oracle模塊模塊：

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

這里下載的是源碼進(jìn)行安裝

[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

raise DistutilsSetupError("cannot locate an Oracle software " \

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

報(bào)錯解決辦法：在root用戶的.bash_profile文件中添加oracle_home的環(huán)境變量

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

然后繼續(xù)build：

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

running build

running build_ext

后面輸出信息省略

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

running install

running bdist_egg

后面輸出信息省略

按照完成之后，進(jìn)行驗(yàn)證模塊：

>>> import cx_Oracle

Traceback (most recent call last):

File "", line 1, in

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

解決辦法：在root用戶的.bash_profile文件中添加LD_LIBRARY_PATH的環(huán)境變量

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)

# 將異常捕捉，然后e就是拋異常的具體內(nèi)容

except Exception as e:

print(e)

else:

cursor = db.cursor()

data = oraclesql(cursor)

for i in data:

print(i)

cursor.close()

db.close()

更多關(guān)于Python相關(guān)內(nèi)容感興趣的讀者可查看本站專題：《Python常見數(shù)據(jù)庫操作技巧匯總》、《Python編碼操作技巧總結(jié)》、《Python數(shù)據(jù)結(jié)構(gòu)與算法教程》、《Python Socket編程技巧總結(jié)》、《Python函數(shù)使用技巧總結(jié)》、《Python字符串操作技巧匯總》、《Python入門與進(jìn)階經(jīng)典教程》及《Python文件與目錄操作技巧匯總》

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