NT Service and Heap size

Question

Can someone tell me if there is a way to :
(1) verify and modify heap size in nt service?
(2) in multi server mode, there are two nt services for weblogic
domains, is it needed to change heap size for weblogicAdmin service for
heap size increase? What will happen if PIA is 1024MB heap size and
weblogicAdmin is 256MB?
Thanks in advance/T

Answer 1

Nicolas, test show that once the nt service is installed, modifying heap
size in setenv.cmd and run setenv.cmd file reinstall nt service does not
change the heap size already in registry. So, test shows that I can
modify the heap size directly in registry and restart service?. Am i doing something wrong here.. can i correct and only to modify and existing heap size in
registry?
Please let me know what else should I do once the old heap
size in already in registry and not the new heap size when reinstalled NT service.
other question, long the weblogic tuning, I found the following from bea site. During the peak time, we may have 40000 unique users per day. Should I also consider increase maxUserPort? The weblogic domains are hosted on windows 2003 servers.
Windows Tuning Parameters
For Windows platforms, the default settings are usually sufficient. However, under sufficiently heavy loads it may be necessary to adjust the MaxUserPort and TcpTimedWaitDelay. These parameters determine the availability of user ports requested by an application.
By default, ephemeral (that is, short-lived) ports are allocated between the values of 1024 and 5000 inclusive using the MaxUserPort parameter. The TcpTimedWaitDelay parameter, which controls the amount of time the OS waits to reclaim a port after an application closes a TCP connection, has a default value of 4 minutes. During a heavy loads, these limits may be exceeded resulting in an address in use: connect exception. If you experience address in use: connect exceptions try setting the MaxUserPort and TcpTimedWaitDelay registry values under the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters key:
MaxUserPort = dword:00004e20 (20,000 decimal)
TcpTimedWaitDelay = dword:0000001e (30 decimal)
Increase the value of the MaxUserPort parameter if the exception persists.
For more information about Windows 2000 tuning options, see:
§ The Microsoft Windows 2000 TCP/IP Implementation Details.
§ The Windows 2000 Performance Tuning white paper.
thanks
T