I'll have to try it out, but I used my own solution as follows...
I actually found a simpler solution using Pathman.exe from the Windows Resource Kit and a batch file.
First, here a couple of things to remember:
1. The Windows registry stores Windows Path elements as %SYSTEMROOT% instead of "C:\Windows" for XP or "C:\WINNT" for Win2k.
2. Calling up the path from a shell or batch file expands these variables.
3. A shell's path environment is not affected by the pathman.exe utility and will remain unchanged unless you use the set command within that shell, and such changes are only in effect till you close the shell.
Here is the script I used:
REM************************************
@echo off
pathman.exe /rs "%path%"
rem Old path removed
pathman.exe /as "%path:ora81=ora92%"
rem New path added
rem Now to remove path reduncies...
if %SYSTEMROOT%==C:\WINNT GOTO WIN2k
rem This is for WIN XP
pathman /rs "C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\system32\nls;C:\WINDOWS\system32\nls\ENGLISH;"
rem Path redundancies removed...
GOTO END
:WIN2k
pathman /rs "C:\WINNT\system32;C:\WINNT;C:\WINNT\System32\Wbem;C:\WINNT\system32\nls;C:\WINNT\system32\nls\ENGLISH;"
rem Path redundancies removed...
:END
REM************************************
The basic system path is preserved in the registry because all variables are expanded when calling %PATH%.
%PATH% allows for variable substition in WinXP and Win2K which allowed me to modify the path with the new Oracle home when I used pathman to write back the path to the registry.
Removing explicit Windows path elements was required because %PATH% expands the variable %SYSTEMROOT% from the registry, causing double entries for "C:\Windows\System32"...
I hope that makes sense to you, because it worked for me for both Windows XP and 2000.
