Installing python cx_oracle on Ubuntu

cs_oracle is the python interface to oracle. To install this to your ubuntu environment, we can follow the below steps:

Step 1:

       sudo apt-get install build-essential unzip python-dev libaio-dev

Step 2:
Click here to download the appropriate zip files required for this. You'll need:

instantclient-basic-linux
instantclient-sdk-linux

Get the appropriate version for your system.. x86 vs 64 etc. Make sure you don't get version 12, since it's not supported by the cx_Oracle moduel yet.

Unzip the content in the same location, so you'll end up with a folder named: instantclient_11_2 which will contain a bunch of .so and jar files.

For my case I used,  $ORACLE_INST_CLIENT, which will basically point to the location where you unzipped your installclient folders.

export ORACLE_INST_CLIENT=$(pwd)/instantclient_11_2

Step 3:
create a symlink to your SO file.

cd $ORACLE_HOME
ln -s libclntsh.so.11.1   libclntsh.so  #the version number on your .so file might be different

Step 4: 
Update your /etc/profile or your ~/.bashrc

export ORACLE_INST_CLIENT=/location/of/your/files/instantclient_11_2
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ORACLE_INST_CLIENT

Step 5: 
Edit /etc/ld.so.conf.d/oracle.conf

This is a new file, simple add the location of your .so files here, then update the ldpath using

sudo ldconfig

Step 6:
Finally just install cx_oracle module:

pip install cx_oracle



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