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Oracle 12c - Pluggable databases. - Macrotone Blogs
By Geoffrey Chapman on Saturday, 06 October 2012
Category: Oracle

Oracle 12c - Pluggable databases.


Larry Ellison at the Oracle OpenWorld conference earlier this week, provided the information that the forthcoming Oracle Database 12c (the c standing for ‘cloud’) will  feature a radical new architecture called pluggable databases.

Currently a server running an Oracle database has an individual set of server processes.  Adding a second database to the server adds additional processes for the second database.  Pluggable databases will allow multiple databases to run under one copy, or instance, of the Oracle database software, a feature he called "multitenancy."

As the name implies, pluggable databases allow multiple tenant databases to run under one copy of Oracle 12c.  An arbitrary number of up to 250 user databases, can be run under the new architecture, and the architecture could probably support more. The new database is reportedly compatible with older Oracle databases.

This change in architecture brings a number of benefits that Oracle touted through the week, including improved efficiency, stronger security and easier upgrades.

However there are a few challenges for database administrators especially in the area of allocation computational resources. How will the new workload characteristics of running multiple databases on a single server be determined. The characteristics of the optimum size of a server, in reference to memory and storage space, may also/will need to be reconsidered.

Interesting times lay ahead.  Oracle Database 12c is set for availability in 2013.

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