python3.6連線oracle資料庫

wadeson發表於2017-08-04
PythonOracle資料庫

下載cx_Oracle模組模組：

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

這裡下載的是原始碼進行安裝

[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 <module>
raise DistutilsSetupError("cannot locate an Oracle software " \
distutils.errors.DistutilsSetupError: cannot locate an Oracle software installation

報錯解決辦法：在root使用者的.bash_profile檔案中新增oracle_home的環境變數

 

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

然後繼續build：

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

後面輸出資訊省略

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

後面輸出資訊省略

 

按照完成之後，進行驗證模組：

>>> 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

解決辦法：在root使用者的.bash_profile檔案中新增LD_LIBRARY_PATH的環境變數

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，然後e就是拋異常的具體內容
   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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