Monday Jan 19, 2015

The Easiest Way to Enable Oracle Database Application Development on Mac OS X

tl;dr Your OS X applications can connect to Oracle Database as if it was running natively on OS X if you simply run Oracle Database in a VirtualBox VM with port forwarding enabled (easy).

To work backwards through the installation process: in the Network window of the VirtualBox GUI, I enable a NAT Network adapter.

Then, under Networking -> Advanced -> Port Forwarding, I create a TCP rule with Host IP 127.0.0.1 and both the Host and Guest Port fields set to the port number that the Oracle network listener in the VM is using: the Oracle default is 1521. I leave the Guest IP field blank.

I click OK twice, dismissing the "The current port forwarding rules are not valid. None of the host or guest port values may be set to zero." dialog

Start the VM. If the DB is set to start during OS boot, you don't even need to log in.

Update: If you have Oracle Database 12c you can use the new EM Express console for DB management and monitoring. Just enable port forwarding for port 5500 and then browse (from OS X) to https://localhost:5500/em. See this article by Gerald Venzl.

The Client

Connecting to the database from OS X tools and clients uses the same forms of Oracle connect string as if the database was native on OS X. For example, using the "Easy Connect" hostname/service_name form, I can simply use 'localhost' as if the database was on OS X:

cjones@mac:~$ sqlplus cj/welcome@localhost/orcl

SQL*Plus: Release 11.2.0.4.0 Production on Mon Jan 19 09:20:38 2015

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

SQL> 

Here I was using SQL*Plus from the free, easy to install Instant Client bundle. Download the Oracle Instant Client Basic, SDK and SQL*Plus ZIP files. Unzip them, create the two symbolic links given in the install instructions, and set DYLD_LIBRARY_PATH to the Instant Client directory.

The Instant Client can be used, among other things, for building PHP, Python, Node.js and other language drivers. With each of these you would use exactly the same connect string to connect to the database.

Prebuilt VMs

There are prebuilt VMs with Oracle Database already installed, such as the Database App Development VM. Download and import it into VirtualBox.

The Database

It's easy to install your own Oracle Database "XE" Express Edition database for development. After the XE RPM is installed on Oracle Linux 5 and 6, run its simple configuration script to set up the administration passwords, the listener port (default is 1521), and whether to autostart during boot. Install XE by following the ten steps in Chapter 4 of The Underground PHP and Oracle Manual or check the official instructions.

Alternately you could install the Enterprise Edition for free ("only for the purpose of developing, testing, prototyping, and demonstrating" - read the click-through license). There are various scripts on the web to autostart at machine boot.

The OS

If you need an OS, Oracle Linux is free from our public yum server. Download the ISO, create a new VirtualBox VM and tell it where to find the ISO. Boot and follow the install prompts.

VirtualBox

VirtualBox is free from VirtualBox.org and runs on OS X, Windows, Linux and Solaris.

The only "trick" to using VirtualBox is to remember the magic cursor-releasing key, e.g. the Left Command Key on OS X. This key is useful if/when you haven't installed the VirtualBox "Guest Additions" into the VM and clicking into the VM window captures the cursor. The specific key combination is shown as a reminder on the bottom right of the containing VirtualBox VM window. Pressing it returns cursor control to the host OS. Luckily, once you install the "Guest Additions" the cursor is automatically released when you mouse out of the VM window.

Thursday Jan 19, 2012

PHP VirtualBox VM has been refreshed

While I was recently on summer vacation (yes, it is summer in half the world), the VirtualBox VM for PHP was refreshed to a more recent Zend Server/Oracle Linux/Oracle Database XE stack.

I just pulled the VM down, imported it and had it booting and serving PHP pages in a very few minutes. VirtualBox really is marvelous. There is a link to download the VM near the foot of the Oracle Technology Network Developer VM page.

About

Tourists looking out over an Opal mine
I'm a Product Manager in Server Technologies, working on scripting languages and developer-access.
Email: christopher.jones@oracle.com
Twitter: http://twitter.com/ghrd
Links: OTN Node.js Developer Center
OTN PHP Developer Center
Book: Free PHP Oracle book

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