Home » Server Options » RAC & Failsafe » Transparent Application Failover (Oracle 11g Rel1 , RHEL AS4)
Transparent Application Failover [message #400049] Sat, 25 April 2009 08:52 Go to next message
rsreddy28
Messages: 295
Registered: May 2007
Senior Member
Hi ,

In 10g RAC we have Transparent Application Failover only for SELECT statements but not for DML's . Is this flaw overcome in Oracle 11g RAC.

Kindly let me know , I could not find the exact answer for this anywhere .
Re: Transparent Application Failover [message #400055 is a reply to message #400049] Sat, 25 April 2009 09:27 Go to previous messageGo to next message
Mahesh Rajendran
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Location: oracleDocoVille
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As far as I know, it is still not supported.
There are a few improvements in notification techniques.
Re: Transparent Application Failover [message #400056 is a reply to message #400055] Sat, 25 April 2009 09:36 Go to previous messageGo to next message
rsreddy28
Messages: 295
Registered: May 2007
Senior Member
Thanks , this was a clarification . I could not find info on this in OTN or the metalink. And there are good updates on the load balancing features.
Re: Transparent Application Failover [message #400057 is a reply to message #400055] Sat, 25 April 2009 09:38 Go to previous messageGo to next message
rsreddy28
Messages: 295
Registered: May 2007
Senior Member
Thanks , this was a clarification . I could not find info on this in OTN or the metalink. And there are good updates on the load balancing features.

My manager was arguing that TAF has been updated in 11g even for DML's . I was sure that there has been no improvement even in 11g RAC but I could not prove with any documentation on this .

Is there any valid documentation which has this. ?

[Updated on: Sat, 25 April 2009 09:39]

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Re: Transparent Application Failover [message #400059 is a reply to message #400057] Sat, 25 April 2009 10:24 Go to previous messageGo to next message
Mahesh Rajendran
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Could be out of context.
He might be referring to OCI callbacks, which was available in 10g itself.
At any case, transactions are rolled back.

>> Is there any valid documentation which has this. ?
Right in the docs.
Raise a TAR or test yourself for Validity.
Oracle Docs is not "error free".

http://www.oracle.com/pls/db111/search?remark=quick_search&word=TAF+DML

Re: Transparent Application Failover [message #400062 is a reply to message #400059] Sat, 25 April 2009 11:24 Go to previous message
rsreddy28
Messages: 295
Registered: May 2007
Senior Member
May be we need to accept the fact that Oracle is not error free. And sure I'll raise a TAR for this TAF for DML on 11g .

Anyhow thanks for your time .
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