Maximum JVM heap size greater than 1.8GB will prevent ColdFusion M Scott Cummins 5/8/2007 9:02:01 PM Good day Gentlemen (and ladies) I havs some developers here who are working on a new product and they have run into a road block, I have posted the error and the JAVA fix below Issue If a maximum heap size of 1.8GB or greater is entered in the Macromedia ColdFusion MX Administrator's Java/JVM Settings page and the change is submitted, you will receive a message stating the server must be restarted in order for the change to take effect. The attempt to restart the server will fail and the following message will be displayed: Windows: Windows could not start the ColdFusion MX Application Server on Local Computer. For more information, review the System Event Log. If this is a non-Microsoft service, contact the service vendor, and refer to service-specific error code 2. On 32-bit processor machines, the largest contiguous memory address space the operating system can allocate to a process is 1.8GB. Because of this, the maximum heap size can only be set up to 1.8GB. On 64-bit processor machines, the 1.8 GB limit does not apply, as 64-bit processor machines have a larger memory address space. Solution To correct this issue, the jvm.config file must be modified: Open the cf_root/runtime/bin/jvm.config file in a text editor. Locate the section labeled "# Arguments to VM". Modify the -Xmx variable to set a maximum heap size less than 1.8GB. For example: -Xmx1024m Save the file. Restart ColdFusion. Now, My Question is : Can I load a 32 bit machine with the 64 bit O/S and remedy this situation or is this possible the fact that it is using 64 bit word or will the O/S allow the Maximum heap size to be larger despite the fact that it is a 32 bit processor -- Scott A Cummins Sr. Systems Engineer Equity Analytics ( A division of Merrill Lynch) 14614 N. Keirland Blvd Scottsdale, AZ 85254 480-998-3515

Re: Maximum JVM heap size greater than 1.8GB will prevent ColdFusion M "Jane C" <jellybean[ at ]NOSPAMxjgarage.org> 5/8/2007 11:14:56 PM See inline: "Scott Cummins" <scummins[ at ]equitymethods.com> wrote in message news:532DC151-84C7-4525-8065-7DCFA461D099[ at ]microsoft.com... [Quoted Text] > > On 32-bit processor machines, the largest contiguous memory address space > the operating system can allocate to a process is 1.8GB. Because of this, > the > maximum heap size can only be set up to 1.8GB. On 64-bit processor > machines, > the 1.8 GB limit does not apply, as 64-bit processor machines have a > larger > memory address space. > Now, My Question is : Can I load a 32 bit machine with the 64 bit O/S and > remedy this situation or is this possible the fact that it is using 64 bit > word or will the O/S allow the Maximum heap size to be larger despite the > fact that it is a 32 bit processor If you have a 32 bit processor running a 32 bit operating system, then you are stuck with that 1.8GB limit. If you have a 64 bit processor running a 64 bit operating system, then the 1.8GB limit does not apply. You cannot install a 64 bit operating system on a 32 bit processor. > -- > Scott A Cummins > Sr. Systems Engineer > Equity Analytics > ( A division of Merrill Lynch) > 14614 N. Keirland Blvd > Scottsdale, AZ 85254 > 480-998-3515 -- Jane, not plain ;) 64 bit enabled :-) Batteries not included. Braincell on vacation ;-) MVP Windows Shell/User