For capturing process characteristics when the server hangs or terminates unexpectedly, we can use User Mode Process Dumper. The User Mode Process Dumper (userdump) dumps any running Win32 processes memory image (including system processes such as csrss.exe, winlogon.exe, services.exe, etc) on the fly, without attaching a debugger, or terminating target processes. Generated dump file can be analyzed or debugged by using the standard debugging tools.
Userdump: http://www.microsoft.com/downloads/details.aspx?FamilyID=E089CA41-6A87-40C8-BF69-28AC08570B7E&displaylang=en
Instructions for creating Dump
http://support.microsoft.com/default.aspx?scid=kb;en-us;241215
Analysis of the dump can be done by the debugging tools for Windows
Debugging Tools for Windows:
32 bit: http://www.microsoft.com/whdc/devtools/debugging/installx86.mspx
64 bit: http://www.microsoft.com/whdc/devtools/debugging/install64bit.mspx
For tracking memory log issues there are # of utilities
Perfmon is the most comprehensive
Memlog is another utility that gives memory log for a process and writes to a file
Sysinternals has memory utilities
Blat is a program to set emails automatically on an event
Also for Windows 32 bit /3G switch can be set using the instructions in
http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx
