Deploying SOA across Active-Active Data Centres by Simon Haslam

clip_image002I’ve recently started on another active-active SOA infrastructure project and thought I’d share a few introductory notes since it’s a relatively new topic in the context of Fusion Middleware.


Over recent years within Europe some customers have accepted a close geographic distance (e.g. 15 km) between data centres in return for a high bandwidth, low latency interconnect (typically ‘dark’ or dedicated fibre). This is to enable them to share normal production workload across both sites – so called "active/active" data centres – which is contrary to the traditional approach of having a highly segregated Disaster Recovery (DR) site (an "active/standby" topology).


Prior to the mid-2013 Oracle supported a single approach to High Availability (HA), which was clustering within a single site, as described by Fusion Middleware High Availability Guide, and not stretched across two sites. The Oracle supported approach to Disaster Recovery was entire site fail-over using an active-standby model, as shown below (from Fusion Middleware Disaster Recovery Guide):

A few large customers had negotiated agreements with Oracle to support architectures that were simultaneously active in 2 data centres, but these were people spending considerable sums on licences and ACS support.

Network Trend

Over the last 5 years the cost of site-to-site fibre has fallen considerably with “metropolitan” scale data centre links becoming common. Whilst the term Metropolitan Area Network (MAN) originally meant a connection across a city, these days it tends to also apply to low latency connections between neighbouring conurbations, typically running Ethernet over DWDM. The scale of a MAN falls in between the Local Area Network (LAN) within a single data centre and the traditional Wide Area Network (WAN) which can span hundreds of miles. Read the complete article here.

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Technorati Tags: SOA Community,Oracle SOA,Oracle BPM,OPN,Jürgen Kress

About Jürgen Kress
As a middleware expert Jürgen works at Oracle EMEA Alliances and Channels, responsible for Oracle’s EMEA Fusion Middleware partner business. He is the founder of the Oracle SOA & BPM and the WebLogic Partner Communities and the global Oracle Partner Advisory Councils. With more than 5000 members from all over the world the Middleware Partner Community is the most successful and active community at Oracle. Jürgen manages the community with monthly newsletters, webcasts and conferences. He hosts his annual Fusion Middleware Partner Community Forums and the Fusion Middleware Summer Camps, where more than 200 partners get product updates, roadmap insights and hands-on trainings. Supplemented by many web 2.0 tools like twitter, discussion forums, online communities, blogs and wikis. For the SOA & Cloud Symposium by Thomas Erl, Jürgen is a member of the steering board. He is also a frequent speaker at conferences like the SOA & BPM Integration Days, JAX, UKOUG, OUGN, or OOP.

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