By adding this service to Oracle Linux it will become the only enterprise Linux provider that can offer zero downtime updates. The Ksplice technology will be a standard feature of Oracle Linux Premier Support.
“More than 7,000 customers have chosen Oracle Linux for mission critical systems because of our world-class support offerings,” said Wim Coekaerts, Senior Vice President, Oracle Linux and Virtualization. “The addition of Ksplice’s zero downtime update technology further extends our Linux technology leadership.”
Ksplice prepares the hot updates at the object code level instead of the source code level, which allows Ksplice to perform hot updates with minimal programmer involvement. Ksplice analyzes the original kernel and the traditional source code patch by comparing compiled code (and its metadata) rather than source code.
“System administrators are forced to choose between known best practices and added operational costs when administering Linux updates,” said Jeff Arnold, CEO, Ksplice Inc. “Ksplice’s technology will be able to take Oracle’s kernel updates and transform them into zero downtime updates that provide always-accessible systems with no reboot necessary. This results in improved system availability and security as well as reduced operational costs for the customer.”
The following technical paper, written in 2008, describes some of the technology behind Ksplice: http://www.ksplice.com/paper