Python連接Oracle

當前環境：Linux Centos 7

1. 下載安裝包cx_Oracle

由于我本地Python版本是2.7,所以選擇是2.7版本

wget https://pypi.python.org/packages/e1/18/00987c6a9af9568ee87d1fcba877407684a3f1b87515e5eb82d5d5acb9ff/cx_Oracle-6.0rc1-py27-1.x86_64.rpm#md5=ff8f5cce07bd5ec8ed3ce5c79d451474

參考:

2. 安裝cx_Oracle

安裝：

rpm -ivh cx_Oracle-6.0rc1-py27-1.x86_64.rpm

查看當前python引入模塊庫的路徑

[root ~]# python

Python 2.7.5 (default, Nov 6 2016, 00:28:07)

[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] on linux2

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

>>> import sys

>>> print sys.path

['', '/usr/lib/python2.7/site-packages/AliyunUtil-0.0.1-py2.7.egg', '/usr/lib/python2.7/site-packages/cloud_init-0.7.6-py2.7.egg', '/usr/lib64/python27.zip', '/usr/lib64/python2.7', '/usr/lib64/python2.7/plat-linux2', '/usr/lib64/python2.7/lib-tk', '/usr/lib64/python2.7/lib-old', '/usr/lib64/python2.7/lib-dynload', '/usr/lib64/python2.7/site-packages', '/usr/lib/python2.7/site-packages']

檢查安裝路徑，如果cx_Oracle.so文件不在以上python引入路徑內需要將該文件拷貝到以上python引入路徑,所以我這里不需要進行拷貝操作

[root ~]# rpm -qa | grep cx_Oracle | xargs rpm -ql

/usr/lib64/python2.7/site-packages/cx_Oracle-6.0rc1-py2.7.egg-info

/usr/lib64/python2.7/site-packages/cx_Oracle-6.0rc1-py2.7.egg-info/PKG-INFO

/usr/lib64/python2.7/site-packages/cx_Oracle-6.0rc1-py2.7.egg-info/SOURCES.txt

/usr/lib64/python2.7/site-packages/cx_Oracle-6.0rc1-py2.7.egg-info/dependency_links.txt

/usr/lib64/python2.7/site-packages/cx_Oracle-6.0rc1-py2.7.egg-info/top_level.txt

/usr/lib64/python2.7/site-packages/cx_Oracle.so

3. 下載Oracle Library

由于Oracle官網下載東西存在Auth認證，所以簡單點就點擊選中的rpm包保存在windows上，然后上傳到linux上即可

注意：

下載的版本要和連接的Oracle基本一致，我需要連接的Oracle版本是11.2，所以我下載的是oracle-instantclient11.2-basic-11.2.0.3.0-1.x86_64.rpm

操作系統要和之前下載的cx_Oracle要一致，這很重要！！！我在這個上面栽了跟頭，花了比較多的時間。。。所以我需要下載64位的

在Oracle官網下載東西你得先勾選Accept License Agreement，否則你下載不了

其次你得有Oracle的賬號

4. 安裝Oracle Library

rpm -ivh oracle-instantclient11.2-basic-11.2.0.3.0-1.x86_64.rpm

5. 配置環境變量

修改Oracle安裝路徑

將client64改為client，至于為什么要改暫時還不清楚，只知道不改的話會報錯Oracle Client library cannot be loaded: libclntsh.so: cannot open shared object file: No such file or directory

cd /usr/lib/oracle/11.2/

mv client64 client

打開~/.bashrc,追加環境變量路徑

vim ~/.bashrc

配置環境變量

// 查看Oracle安裝路徑

[root@iZbp180vortqapb7yf8217Z ~]# rpm -qa | grep oracle | xargs rpm -ql

/usr/lib/oracle/11.2/client64/bin/adrci

/usr/lib/oracle/11.2/client64/bin/genezi

/usr/lib/oracle/11.2/client64/lib/libclntsh.so.11.1

/usr/lib/oracle/11.2/client64/lib/libnnz11.so

/usr/lib/oracle/11.2/client64/lib/libocci.so.11.1

/usr/lib/oracle/11.2/client64/lib/libociei.so

/usr/lib/oracle/11.2/client64/lib/libocijdbc11.so

/usr/lib/oracle/11.2/client64/lib/ojdbc5.jar

/usr/lib/oracle/11.2/client64/lib/ojdbc6.jar

/usr/lib/oracle/11.2/client64/lib/xstreams.jar

// 追加ORACLE_HOME環境變量路徑

export ORACLE_HOME=/usr/lib/oracle/11.2/client

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ORACLE_HOME/lib

生效配置

source ~/.bashrc

6. 檢查是否可以引入cx_Oracle

import沒有報錯，說明之前的辛苦沒有白費

[root client64]# python

Python 2.7.5 (default, Nov 6 2016, 00:28:07)

[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] on linux2

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

>>> import cx_Oracle

>>>

7. 連接Oracle

一個插入n條數據的Python腳本：

#!/usr/bin/python

# -*- coding: UTF-8 -*-

import sys

import cx_Oracle

import time

rows = int(sys.argv[1])

con = cx_Oracle.connect('test/test@sampledb')

cur = con.cursor()

cur.execute("SELECT MAX(ID) FROM PTTEST")

max_id = cur.fetchone()[0] or 0

start_id = max_id + 1

for i in xrange(rows):

cur.execute("INSERT INTO PTTEST (ID, NAME, AGE, GENDER, SALARY)VALUES(%d, 'pt', 15, 'male', 50000)" % int(i + start_id))

if i % 100 == 0:

time.sleep(3)

print 'Insert rows [%d]:%d' % (int(time.time()), i)

con.commit()

cur.close()

con.close()

總結

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