Martins Blog

Trying to explain complex things in simple terms

oracleracsig.org presentation October 27 2011

Posted by Martin Bach on September 26, 2011

For all of those who aren’t tired of listening to me yet there is good news: I am presenting a webinar at http://www.oracleracsig.org on October 27th 2011. I will most likely be around 17:00 UK time as the meetings start 09:00 PST. I agreed with the committee that we have performed a lot of nitty-gritty down to the very low level, and should probably do a more high level overview presentation as well. As it happens, I am starting my seminars with exactly that!

For your convenience the abstract and summary are shown below-hoping to see you online.

An Introduction to Oracle High Availability

This introductory level session aims at providing an overview of Oracle High Availability options to users of traditional single instance Oracle deployments who are interested in ways to make their database more highly available.

Starting with single instance Oracle the discussion begins with addressing single points of failure in a Unix server. Virtualisation can be another step to making server failures transparent to the users. A different approach to virtualisation is the use of active passive clusters. These have been the traditional domain of established vendors such as IBM with Power HA and Veritas with their Veritas Cluster Suite. Interestingly much of their functionality can now be implemented with Oracle Clusterware/Grid Infrastructure as well at no extra cost.

The next step on the high availability ladder is the active/active cluster, for which one finds only very few implementations in the field. Oracle’s Real Application Cluster is probably the most widely spread. RAC can be configured locally on one data centre, or extend to more than one data centre which is probably the pinnacle of RAC deployment. Both of the setups are going to be explored during the presentation.

The discussion ends with a necessary view on disaster recovery strategies, both block-level oriented (EMC SRDF, HP CA etc) as well as Data Guard. Time permitting we will touch on replication technologies as well.

You should soon see the announcement on the oracleracsig.org website as well. As always, the presentation and recording will be made available there. All you need is a free account and a browser to take you to the list of previous webinars.

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