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From Jeffrey Janner <>
Subject RE: TOMCAT 64bit & 32BIT differences - URGENT
Date Thu, 07 Jul 2011 14:07:32 GMT

You will need a 64-bit Java implementation, and the 64-bit version of the tomcat.exe wrapper
program in the bin directory. Last I checked, the tomcatw.exe program is still 32-bit, as
it only has to manipulate the registry.

If you are also using the APR protocol for your connectors, you will need the 64-bit version
of the native libraries.

The current tomcat installer will automatically install the correct bit-version of these components
for the operating system you are running under. Please note that if you install tomcat onto
a 64-bit OS, you must have a 64-bit version of Java.  It cannot run a 32-bit JVM.


> -----Original Message-----
> From: saj-khan []
> Sent: Thursday, July 07, 2011 8:53 AM
> To:
> Subject: TOMCAT 64bit & 32BIT differences - URGENT
> Hi All,
> apologies if this question has been asked before.
> I need to know the main differences between 64 & 32bit tomcat for
> windows.
> Is the tomcat.exe and all associated files in the bin folder and lib
> folder
> trully compiled 64bit
> or is the installer solely 64bit for installing onto 64bit OS? and the
> tomcat just uses which ever java you have installed to create its jvm?
> i have been asked to change a set of servers from 32bit to 64bit for
> tomcat
> and java
> if it turns out that the java is the only thing i need ot change it
> will
> save me tons of work
> if the tomcat needs to be installed that nots a biggy as i can copy and
> paste the tomcat folder into the place of the existing and put back the
> conf
> and webapps folder so in theory this will allow me to work as if
> nothing
> changed....
> you answers on the 32-64bit is greatly appreciated!!
> Saj.
> --
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> 32BIT-differences---URGENT-tp32013530p32013530.html
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