Can we have Multiple Instance on same Node in Oracle 10g RAC

Hi All,
I am planning to implement the RAC in Oracle 10g.Before that i have one doubt regarding RAC.
My question is "Can we create multiple Instance on Same node(Server) ?"
is it possible.
Any ideas or thoughts would be apperciable.
Thanks in Advance.
Anwar

This is where it is important to keep the separation between 'database' and 'instance'.
A database is the set of files that contains the data (and the redo, control files, etc). A database does nothing by itself, other than take up lots of disk space.
An instance is theCPU cycles (running software) and the memory to control the database.
In Oracle RAC, you can have as many instances controlling one database [at the same time] as you want (within reason). Each instance must be able to access the disk(s) that contains the database.
These multiple instances can be on the same computer (effectively taking up a lot of server memory and CPU for nothing) or they can be on separate computers.
If they are on separate computers, the disk subsystems must be able to be shared across computers - this is occasionally done using operating system clusterware and is the main reason why clusterware is required at all. (This is also the toughest part of the pre-requisites in setting up a RAC and is very vendor dependent unless you use ASM.)
These instances need a communication connection to coordinate their work (usually a separate network card for each computer) so they do not corrupt the disk when they are trying to access the same file, and possibly the same block, at the same time.
In a RAC configuration, instances can be added, started, running, stopped and removed independent of each other (allowing a lot of high availability) or can be started and stopped as a group.
Each instance gets it's own SID, which is in no way any different than a non-RAC SID. It's just the name of a service that can be invoked. The neat thing is that the SID
a) helps the DBA keep things straight by lettiung us talk about 'instance A' (the Oracle software to be running over on computer A) vs 'instance B' when starting, stopping and managing;
b) helps the application by providing targets that can be listed in the TNSNAMES.ORA [against one service alias], which is used by ORacle Networking to provide automated load balance or failover (instance/SID a is not available, I guess I'll try the next in the list)
Hope that helps the concept level a bit.

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Since I got no response on the shadowbox forums after 2 weeks, I thought it's worth to post it here and hope someone can help me out.
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I've tried almost everything where I can think of, but no luck.
Searched many forums and googled a lot, but without success.
I got feeling that I'm so close and missing some simple solution.
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on (release) {
getURL("javascript:openShadowbox
('http://test.cquence-multimedia.nl/images/cqmm_test.flv','flv','title')");
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on (release) {
getURL("javascript:openShadowbox
('http://test.cquence-multimedia.nl/images/WizardFinal_1.flv','flv','title')");
================================================
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<script src="Scripts/swfobject_modified.js" type="text/javascript"></script>
<script src="Scripts/AC_RunActiveContent.js" type="text/javascript"></script>
<object id="FlashID" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="150" height="50" data="images/default_swf_button.swf">
<param name="movie" value="images/default_swf_button.swf" />
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<param name="wmode" value="opaque" />
<param name="swfversion" value="9.0.45.0" /> 
<param name="expressinstall" value="Scripts/expressInstall.swf" />  
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<param name="quality" value="high" />
<param name="wmode" value="opaque" />
<param name="swfversion" value="9.0.45.0" />
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</object>
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<script type="text/javascript">
swfobject.registerObject("FlashID");
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<script type="text/javascript">
function openShadowbox(content, player, title, width, height, options){
Shadowbox.open({
content:"http://test.cquence-multimedia.nl/images/cqmm_test.flv",
player:"flv",
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height:"600px",
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<script src="Scripts/swfobject_modified.js" type="text/javascript"></script>
<script src="Scripts/AC_RunActiveContent.js" type="text/javascript"></script>
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<param name="wmode" value="opaque" />
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<param name="expressinstall" value="Scripts/expressInstall.swf" />  
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swfobject.registerObject("FlashID1");
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player:"flv",
title:"SHADOWBOX FLASHBUTTON TEST BRIAN",
width:"800px",
height:"600px",
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=======================================================
This is the link to the page in question:
http://test.cquence-multimedia.nl/index.php?option=com_content&view=article&id=9&Itemid=13
Please, any suggestions would be great!
Thanks in advance.
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