Oracle Perl Setup

1. Need oracle instantclient from oracle, download from

	https://www.oracle.com/database/technologies/instant-client/linux-x86-64-downloads.html

   Note: the version 19.x instantclient can be download without agree to license and oracle account
	 but the one that can be used with libdbd-oracle-perl on debian/devuan must be version 12.1

	 https://download.oracle.com/otn/linux/instantclient/121020/oracle-instantclient12.1-basiclite-12.1.0.2.0-1.x86_64.rpm

	which 1st required license agreement and oracle account (free) before download.

2. Since it is in RPM format, on debian/devuan will need alien, so if not install yet
   could be done by

	$ sudo apt-get install alien

	after than instantclient12.1 could be installed by

	$ sudo alien -i oracle-instantclient12.1-basiclite-12.1.0.2.0-1.x86_64.rpm

3. Download libdbd-oracle-perl from

	https://packages.debian.org/stretch/amd64/libdbd-oracle-perl/download

	or

	http://http.us.debian.org/debian/pool/contrib/libd/libdbd-oracle-perl/libdbd-oracle-perl_1.74-3_amd64.deb

	this package can't be installed by using apt/apt-get install since
	this package depend on oracle-instantclient package, but oracle-instantclient not available
	in deb format due to it's non-free, and require license agreement on oracle web site

	to install this package, it is necessary to download deb package and install it manually.