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Do I need a specific Tomcat 64-bit version to run on Windows Server 2008 R2 64-bit? Or will the regular Tomcat 5 install exe work?

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It sounds like you just need the 64-bit Java JDK only. If Tomcat is written in Java then its cross platform and the Java distribution is where the platform dependence matters.

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There are a few articles floating around about this. Apparently the 32-bit version of Tomcat cannot start the 64-bit JDK. Tomcat 6 has 64 bit support. – Tsynapse Jun 17 '10 at 20:08
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I am currently running on Windows 2008 with 32 bit Tomcat 5 and 32 bit java with no issues, and no gotchas. To be more specific we are running a heavily used authentication module over the system so if it were problematic I would imagine we would know. We are running an instance of Blackboard in conjunction with 64 bit JDK however and they utilize a tomcat web server, so I would think this would work as well for greater scalability, although there may be some additional tweaking needed to make this work.

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yeah, in my experience the only reason you need the 64-bit jvm+tomcat is if your JVM is having trouble and getting maxed out around 1.3GB of ram or so... then you need the 64-bit JVM to go past that ram limit. – djangofan Jun 25 '10 at 17:38
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