RE: RAC or Oracle Fail Safe

From: Tony Johnson <Tony_Johnson_at_Trimble.com>
Date: Wed, 16 Jul 2003 13:59:42 -0700
Message-Id: <25937.338135@fatcity.com>

FailSafe comes with EE and works very well. It might even come with SE but I am not sure. Our production environment fails over in less than 2 minutes. It is much simpler to set up ( ie no SAN, raw devices or OCFS) and a heck of a lotr cheaper ( 20K$ / CPU for RAC ). One other note is that we have not had to failover due to a Win2K of Oracle problem in 18 months of running failsafe. We have found it to be extremely stable just not scalable froma CPU standpoint.

-----Original Message-----
From: Hussain Ahmed Qadri [mailto:hussain_at_skm.org.pk] Sent: Wednesday, July 16, 2003 9:44 AM
To: Multiple recipients of list ORACLE-L Subject: RAC or Oracle Fail Safe

Hello all,

We have setup a Microsoft Cluster Server (MSCS) cluster, with two nodes, using W2K, and now are in the process of deploying Oracle 9i on it. For the purpose of high availability (HA), we are deliberating on setting up either RAC or Oracle Fail Safe. The confusion is over the fact that if we get HA with oracle Fail Safe, i.e. if one node is down due to any problem, then the other takes over, then can we do without RAC? Which of these two is more transparent to the user, i.e. which will take less time to shift the load from one node (server) to the other node? Can any one explain the benefits of using RAC over Oracle Fail Safe, or vice versa.

Regards,

Hussain

DBA SKMCH&RC
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Author: Hussain Ahmed Qadri
INET: hussain_at_skm.org.pk

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