0x7e CENTOS - REMOVE OLD KERNELS

List existed kernels: rpm -q kernel

Install yum-utils: yum install yum-utils

Remove old kernels, leave only 2: package-cleanup --oldkernels --count=2

centos linux kernel

 

0x6f INSTALL CX_ORACLE ON CENTOS 7

  1. Download and install oracle client from Oracle
yum install libaio
rpm -Uvh oracle-instantclient12.1-basic-12.1.0.2.0-1.x86_64.rpm
rpm -Uvh oracle-instantclient12.1-devel-12.1.0.2.0-1.x86_64.rpm
rpm -Uvh oracle-instantclient12.1-sqlplus-12.1.0.2.0-1.x86_64.rpm
  1. Add Oracle client to library path
echo "/usr/lib/oracle/12.1/client64/lib" >/etc/ld.so.conf.d/oracle.conf
ldconfig
  1. install epel repo via yum extra
yum install epel-release
  1. Install additional
yum install gcc python-pip.noarch python-devel
  1. Install cx_Oracle via pip
pip install cx_Oracle
linux oracle python centos