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license info [message #207418] Tue, 05 December 2006 08:03 Go to next message
maoro
Messages: 310
Registered: May 2005
Senior Member
hello
i am considering RAC as a disaster recovery solution for an oracle 9i database server on windows 2003,
please do we need a licence for the RAC solution? does it requires a setup procedure ....
thanks for your help
regards
Re: license info [message #207420 is a reply to message #207418] Tue, 05 December 2006 08:17 Go to previous messageGo to next message
Mahesh Rajendran
Messages: 10672
Registered: March 2002
Location: oracleDocoVille
Senior Member
Account Moderator
RAC is not a disaster recovery solution.
All it provides is high availability by eliminating a single node failure.
If you have 3 nodes in a RAC, and one node fails/smokes, you still have 2 nodes that are still available and workding. But if the database smokes, your RAC can do nothing about it.
You need to look into a Standby Database.
Google your self/ read the documentation.
Re: license info [message #207437 is a reply to message #207418] Tue, 05 December 2006 10:02 Go to previous messageGo to next message
maoro
Messages: 310
Registered: May 2005
Senior Member
well as i understood, RAC is like if u have a database server and multiple instance runing on different nodes connected to this database, if one node fails another instance on another node can still manage the database files,
am i right?
on oracle forum someone replied to be saying that RAC is a DR solution
http://forums.oracle.com/forums/message.jspa?messageID=1576332#1576332

thanks alot
Re: license info [message #207445 is a reply to message #207437] Tue, 05 December 2006 10:40 Go to previous messageGo to next message
Mahesh Rajendran
Messages: 10672
Registered: March 2002
Location: oracleDocoVille
Senior Member
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>>on oracle forum someone replied to be saying that RAC is a DR solution

Where exactly? All the gent says is
Quote:
Better high availability options are :-

#1. Oracle Standby with Data Guard
#2. Oracle Failsafe on Microsoft Cluster (if windows is your OS)
#3. Oracle RAC (Real Application Cluster).


>> if one node fails another instance on another node can still manage the database files,am i right?
Quite right.
Question is, what happens if the database fails?
No other nodes will work~.
You typically have all the nodes in a RAC in the same room.
Assume that building went under water.
RAC provides no help.

The standby database is something you configure in a remote location (DR site)
If the primary site is unavailable, you will find your data in remote DR site.

There is a subtle difference between High Availability and Disaster Recovery.
Both are not the same always.

[Updated on: Tue, 05 December 2006 10:40]

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Re: license info [message #207449 is a reply to message #207445] Tue, 05 December 2006 11:11 Go to previous messageGo to next message
Mahesh Rajendran
Messages: 10672
Registered: March 2002
Location: oracleDocoVille
Senior Member
Account Moderator
As usual,
already said here
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:53900761884409
Re: license info [message #212630 is a reply to message #207418] Sat, 06 January 2007 17:20 Go to previous message
dominikz
Messages: 7
Registered: November 2006
Junior Member

If you have Oracle DB Standard Edition the RAC license is included for up to 4 CPU cluster.

If your cluster is bigger and/or you have Enterprise Edition, you need to buy the RAC Option. If you have SE1, you need to upgrade to SE or EE with RAC option (again depending on cluster size).

If you decide you need to buy more licenes contact me and I'll help you get a very good price.

Dominik

dz@ioresources.com
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