Oracle Instant Client cx_Oracle on Fedora CentOS RHEL

Steps to Install Oracle Instant client and cx_Oracle on Fedora/CentOS/RHEL

1) Download Instant client from oracle website
http://www.oracle.com/technetwork/database/features/instant-client/index-097480.html
e.g. for Linux 86_64 
http://www.oracle.com/technetwork/topics/linuxx86-64soft-092277.html
Download 

1) oracle-instantclient11.2-basic-11.2.0.3.0-1.x86_64.rpm
2) oracle-instantclient11.2-devel-11.2.0.3.0-1.x86_64.rpm
3) oracle-instantclient11.2-sqlplus-11.2.0.3.0-1.x86_64.rpm

Install all 2 packages using dnf
sudo dnf install oracle-instantclient11.2-basic-11.2.0.3.0-1.x86_64.rpm
                 oracle-instantclient11.2-devel-11.2.0.3.0-1.x86_64.rpm
                 oracle-instantclient11.2-sqlplus-11.2.0.3.0-1.x86_64.rpm


Put following in /etc/bashrc file

export LD_LIBRARY_PATH=/usr/lib/oracle/11.2/client64/lib/
export ORACLE_HOME=/usr/lib/oracle/11.2/client64
export PATH=$ORACLE_HOME/bin:$PATH 

OR following command in Terminal

echo export LD_LIBRARY_PATH=/usr/lib/oracle/11.2/client64/lib/ >> /etc/bashrc
echo export ORACLE_HOME=/usr/lib/oracle/11.2/client64 >> /etc/bashrc
echo export PATH=$ORACLE_HOME/bin:$PATH >> /etc/bashrc

Now intall cx_Oracle using pip

sudo pip install cx_Oracle

test cx_Oracle by runing in Terminal
python -c "import cx_Oracle"


References -

1) http://www.leccionespracticas.com/uncategorized/python-oracle-solved-importerror-libclntsh-so-11-1-wrong-elf-class-elfclass32
2) http://www.oracle.com/technetwork/database/features/instant-client/index-097480.html
3) http://www.oracle.com/technetwork/topics/linuxx86-64soft-092277.html
4) http://ubuntugeeknerd.blogspot.in/2013/08/how-to-install-oxoracle-in-rhel-64-bit.html
5) https://code.djangoproject.com/wiki/OracleTestSetup
6) https://www.mylinuxplace.com/install-cx_oracle-on-centos-7/