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| Re: Need to know impact/issues with RAC on Advanced queueing [message #137272 is a reply to message #136541] |
Wed, 14 September 2005 03:54  |
Frank Naude
Messages: 4581
Registered: April 1998
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Senior Member |
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Yes, there are:
"Real Application Clusters (RAC) can be used to ensure highly available access to queue data. The entry and exit points of a queue, commonly called its tail and head respectively, can be extreme hot spots. Because RAC may not scale well in the presence of hot spots, limit usual access to a queue from one instance only. If an instance failure occurs, then messages managed by the failed instance can be processed immediately by one of the surviving instances."
Source: Oracle Streams Advanced Queuing User's Guide and Reference
Best regards.
Frank
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