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тАО02-17-2010 12:33 PM
тАО02-17-2010 12:33 PM
Oracle - RAC
I am reading the documentation of RAC. Is it true that RAC will not have a floating IP address like the traditional HA products ? for example service IP on a SG ?.
RAC documentation says that I need to create a tnsnames.ora on the client pointing to all the cluster nodes in a RAC cluster. I did not see a section where they mentioned, I can also have a floating IP address or so.
Regards,
Kaps
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тАО02-17-2010 01:30 PM
тАО02-17-2010 01:30 PM
Re: Oracle - RAC
Jeff Traigle
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тАО02-17-2010 01:57 PM
тАО02-17-2010 01:57 PM
Re: Oracle - RAC
I thought there would be a manager kind of system who would redirect client requests.
Thank you for the feedback.
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тАО02-17-2010 06:40 PM
тАО02-17-2010 06:40 PM
Re: Oracle - RAC
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1021875
All the cluster members are eager to handle the oracle request at any point of time if smthing goes wrong with one machine and its taken care by tnsnames.ora file.
BR,
Kapil+
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тАО02-22-2010 05:56 AM
тАО02-22-2010 05:56 AM
Re: Oracle - RAC
Example.
A users executes a long query and in the middle of the query the node serving the DB loses connection. Tranparent failover will move the connect and reexecute the query. In the sqlplus sessions this is not displayed clearly as the query picks up where the last one left off after the next node in RAC you specified in the tnsnames.ora catches up with the query.