python installs the oracle extension and database connection method

This article illustrates the python installation of the oracle extension and the database connection method. I will share it with you for your reference as follows:

Download:

cx_Oracle download address: http:// cx-oracle.sourceforge.net /
instantclient - basic download address: http: / / www oracle. com technetwork/database features/instant - client/index - 097480. html

window environment:

python27 oracle10

Software required:

cx_Oracle-5.1.2-10g.win32-py2.7.msi
instantclient-basic-win32-10.2.0.4.zip

1. Directly double-click the msi file to install cx_Oracle;

2. Unzip instantclient-basic-win32-10.2.0.4.zip and copy all the obtained.dll files to F:\Python27\Lib\ site-packages

linux environment:

python26 orracle10

Software required:

cx_Oracle-5.1.2-10g-py26-1.x86_64.rpm
basic-10.2.0.4.0-linux-x86_64.zip

1. rpm -ivh cx_Oracle-5.1.2-10g-py26-1.x86_64.rpm
2. (reference https here: / / www. ofstack. com article / 106295 htm)

Setting environment variables

vi /root/.bash_profile

Add the following two lines:

export ORACLE_HOME=/usr/local/instantclient_10_2
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ORACLE_HOME

Run source /root/.bash_profile for the changes to take effect

Create symbolic links for this link library

cd $ORACLE_HOME
ln -s libclntsh.so.x.x libclntsh.so

Reinstall cx_Oracle

Note the --nodeps parameter, otherwise the above error will be reported

[root@BJ-UPDATE-01 ~]# rpm -ivh --nodeps cx_Oracle-5.0.1-10g-py24-1.x86_64.rpm
Version #5.0.3 does not include the --nodeps parameter

Testing:

#Python
>>> import cx_Oracle
>>> db = cx_Oracle.connect('user/psw@114.242.113.91:1521/orcl')
>>> print db
<cx_Oracle.Connection to user@114.242.113.91:1521/orcl>
>>> cr=db.cursor()
>>> cr.execute("select * from LOGININFO")
<__builtin__.OracleCursor on <cx_Oracle.Connection to user@114.242.113.91:1521/orcl>>
>>> rs=cr.fetchall()
>>> print rs
[('40288a8542746fd90142746fdbb50001', 'cccccc', 1, 1, None, None, None), ('40288a85427474b601427474b8270001', 'eeee', 1, 1, None, None, None), ('40288a854273bce0014273bee6310002', 'dddddd', 0, 0, None, None, None), ('40288a854274532d014274532f600001', 'cccccc', 1, 1, None, None, None), ('40288a8542747c750142747c77ac0001', 'eeee', 1, 1, None, None, None), ('40288a8542744fb30142744fb5e90001', 'cccccc', 1, 1, None, None, None)]
>>>

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