Sun Java System Web Server 6.1 SP12/SP13 Release Notes

64-bit Support

To complement the existing support to 32-bit Solaris SPARC, Web Server 6.1 SP13 also supports 64-bit Solaris SPARC.

The 64-bit release may be of use in certain memory-intensive deployments as it enables administrators to configure a larger file cache and Java heap than the 32-bit release. However, existing plug-ins are not compatible with the 64-bit release. These plug-ins have to be recompiled for the 64-bit release by the plug-in vendor. Java web applications that use native, and non-Java libraries should also be recompiled. Therefore, you might prefer to deploy the 32-bit release of Web Server.

Web Server 6.1 SP13 also provides 64-bit support for FastCGI, Reverse Proxy, and Java Web Services Developer Pack (JWSDP) plug-ins.

The 64-bit release is compatible with 64-bit Solaris kernels on UltraSPARC® processors. The 64-bit release cannot be used on x86 processors or with 32-bit Solaris kernels. The 32-bit release continues to be compatible with both 32-bit and 64-bit Solaris kernels.

Note –

The 64-bit and 32-bit releases of Web Server are packaged and distributed separately. You cannot upgrade an existing 32-bit Web Server installation to a 64-bit installation. You can distinguish the 32-bit and 64-bit releases by the version string that is displayed in the installer, at server startup, and in the server errors log as follows:


Version String 


Sun ONE Web Server 6.1SP13 


Sun ONE Web Server 6.1SP13 (64-Bit)