Installation and use of python cx_oracle on Mac

• Install cx_oracle

sudo python -m pip3 install cx_Oracle --upgrade

or

sudo pip3 install cx_Oracle --pre

• Download the instant client package:

download link

• Unzip and place in the oracle directory

  mkdir -p /opt/oracle
  unzip instantclient-basic-macos.x64-12.2.0.1.0.zip
  

• Create a soft link so that the required library can be found when the program is started

  ln -s /opt/oracle/instantclient_12_2/libclntsh.dylib  ~/lib/
  

  If there is no libfile, create a newmkdir ~/lib

• Copy the OCI library

  cp /opt/oracle/instantclient_12_2/{libclntsh.dylib.12.1,libclntshcore.dylib.12.1,libons.dylib,libnnz12.dylib,libociei.dylib} ~/lib/
  

• Connect to the database test code:

  import cx_Oracle                                          #引用模块cx_Oracle
  conn=cx_Oracle.connect('trump/[email protected]:1521/EE.oracle.docker')    #连接数据库
  c=conn.cursor()                                           #获取cursor
  x=c.execute('select * from users')                   #使用cursor进行各种操作
  print(x.fetchall())
  c.close()                                                 #关闭cursor
  conn.close()
  

Each of EE.oracle.dockerthem has a different installation and configuration, some are database instance names, some are global database names, I use the latter, see for details

result:

```
	[(283, 'qxj', '123456'), (1, 'quanxj', '654321')]
```

success