Re: Oracle Clustering: RAC vs FailSafe

"Charles M. Goehring" wrote:

> We are covered by a site license for 9i and RAC and will be running on
> Windows 2000 Advanced Sever. Hardware is Dell with a Dell SCSI RAID
> box. The system includes Apache Web Server and Apache Tomcat.
>
> Deciding on RAC vs FailSafe and have several unanswered questions:
>
> Can both be operated without having to use Archive Log mode? I
> thought FailSafe was based on using this, but now I'm not sure.

Barring possibility of a documentation bug, consider the following:

Manual - Oracle9i Real Application Clusters Administration Release 2 (9.2)
Part Number A96596-01
Chapter 6
Section titled "Changing the Archiving Mode in Real Application Clusters"

which states "After configuring your Real Application Clusters environment for RMAN, you can alter the archiving mode if needed. For example, if your Real Application Clusters database uses NOARCHIVELOG mode, then follow these steps to change the archiving mode to ARCHIVELOG mode:"

(I question the wisdom of using NoArchiveLog mode, esp. - as Sybrand states - there should not be a [significant] performance hit in a tuned environment, but that is a separate discussion.)

> Is RAC Guard a separate product or is it included with RAC? I
> can't find it listed as a separate product on the Oracle Web site.

The Product Family document at
http://otn.oracle.com/products/oracle9i/pdf/9idb_rel2_prod_fam.pdf is a fairly explicit feature to version and feature to extra-cost-option matrix.

RAC Guard is formally known as Real Application Cluster Guard - you may need to re-check using that name. I could not find it as a separate option either, and would probably conclude it is a feature that is included in RAC in the same way that Data Guard is included in the EE database license.

However, only Oracle (your rep) can give the final answer. Received on Sat May 31 2003 - 10:30:49 CDT