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Installing python cx_oracle on Ubuntu

First of all, it just seems like doing anything with Oracle is obnoxiously painful for no good reason. It's the nature of the beast I suppose. cx_oracle is a python module that allows you to connect to an Oracle Database and issue queries, inserts, updates..usual jazz.

Linux

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 (in my case) which will contain a bunch of .so and jar files.

just for ease of use I'll use $ORACLE_HOME which will basically point to the location where you unzipped your installclient folders.

export ORACLE_HOME=$(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_HOME=/location/of/your/files/instantclient_11_2
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ORACLE_HOME

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. Finaly just install cx_oracle module:

pip install cx_oracle

Mac OS X

Step 1:
install Homebower for the compilation tools

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

  • instantclient-basic-macosx
  • instantclient-sdk-macosx

Get the appropriate version for your system.. x32 vs x64 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 (in my case) which will contain a bunch of .so and jar files.

just for ease of use I'll use $ORACLE_HOME which will basically point to the location where you unzipped your installclient folders.

export ORACLE_HOME=$(pwd)/instantclient_11_2

Step 3. create a symlink to your SO file.

cd $ORACLE_HOME
ln -s libclntsh.dylib.11.2 libclntsh.dylib  #the version number on your .so file might be different
ln -s libocci.dylib.11.2 libocci.dylib

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

export ORACLE_HOME=/location/of/your/files/instantclient_11_2
export DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:$ORACLE_HOME
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ORACLE_HOME

Step 5. Finaly just install cx_oracle module:

pip install cx_oracle
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