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1#
发表于 2012-2-29 22:24:38
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查看: 8650 |
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RAC One Node Better Virtualization for Databases
A virtualized single instance database
Delivers value of server virtualization to databases on physical servers
Live migration of instances across servers
Rolling patches for single instance databases
Built-in cluster failover for high availability
Online upgrade to RAC
Standardized deployment across all Oracle databases
Isolation via Instance Caging
Instance caging enables administrators to limit cpu cores by instance
Protects service levels by preventing runaway cpu consumption
Can be adjusted dynamically, while databases are online.
Controlled by cpu_count parameter
Supports partitioning and overprovisioning cpu
Works with Resource Manager
Omotion
Omotion moves a RAC One Node instance from one server to another—without any downtime
Use Cases
Load balancing
Database + OS patching and maintenance
Oracle supplied tools control migration
Services are not accepting connections on both nodes at the same time
Migrated instance shutdown transactional once services moved
A maximum of 30 minutes allowed for connections to migrate (then shutdown abort)
Oracle Real Application Clusters One Node.ppt
(878 KB, 下载次数: 37, 售价: 25 金钱)
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发表于 2013-5-6 23:38:12