| archivelogs [message #337813] |
Fri, 01 August 2008 04:55  |
rsreddy28
Messages: 295
Registered: May 2007
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Senior Member |
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Hello All,
we have implemented RAC on a 2 node cluster on LINUX AS4 ,Oracle 10g.
My doubt is why do we need separate logfiles,undo tablespaces when we are using a common storage for the database.
And even when a logswitch happens , the archive file is with respect to each instance and not global, why.
Please guide me .
Regards,
Raj
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| Re: archivelogs [message #337829 is a reply to message #337813] |
Fri, 01 August 2008 05:21  |
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Mahesh Rajendran
Messages: 10708
Registered: March 2002
Location: oracleDocoVille
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Senior Member
Account Moderator |
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It is the way RAC works.
By requirement if one instance dies, the other should be fully functional. So RAC needs individual components/threads.
RAC is nothing but different instances sharing a common storage for common objects.
>>And even when a logswitch happens , the archive file is with respect to each instance and not global, why.
The transaction is happening to a particular instance only. So archives are created for that instance only.
[Updated on: Fri, 01 August 2008 05:22] Report message to a moderator |
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