Topic: Database Administration >> What is RAC?
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| mohamed riaz |
Posted: Mar 23, 2008 09:27:21 AM |
Total Post: 74
Joined: Sep, 2006
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Hi,
What is RAC? can anyone explain in simply.
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 VIJAY |
| Posted: Mar 23, 2008 11:32:41 PM |  |
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Total Post: 7
Joined: Nov, 2005
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What is RAC?
Oracle’s Real Application Clusters (RAC) option supports the transparent deployment of
a single database across a cluster of servers, providing fault tolerance from hardware
failures or planned outages. Oracle RAC running on clusters provides Oracle’s highest
level of capability in terms of availability, scalability, and low-cost computing. Oracle
RAC supports mainstream business applications of all kinds. This includes OLTP, DSS,
and Oracle’s unique ability to effectively support mixed OLTP/DSS environments. This
also includes popular packaged products such as SAP, PeopleSoft, Siebel, and Oracle
E*Business Suite, as well as custom applications.
Oracle RAC provides a single image installation and management. The DBA has a
single point of control to install and manage a RAC cluster from the GUI interface or
command line.
Oracle Database 11g includes Oracle Clusterware, a complete, integrated clusterware
management solution available on all Oracle Database 11g platforms (excluding
OS/390). This clusterware functionality includes mechanisms for cluster messaging,
locking, failure detection, and recovery. For most platforms, no 3rd party clusterware
management software need be purchased. Oracle will, however, continue to support
select 3rd party clusterware products on specified platforms.
Oracle Clusterware includes a High Availability API to make applications highly
available. Oracle Clusterware can be used to monitor, relocate, and restart your
applications. With Real Application Clusters, Oracle Clusterware automatically
manages all Oracle processes
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| Mohammed Taj |
| Posted: Mar 25, 2008 05:01:12 AM | |
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Total Post: 623
Joined: Jul, 2007
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In Simple....
RAC
One Database with multiple instances.
ORCL ---> db name
-->orclins1
-->orclins2
-->orclins3
http://www.oracle.com/technology/products/database/clustering/index.html
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