Hello,
I suppose that you have access to the windchill server.
Go to the file <Windchill root folder>/Windchill/site.xconf
This is the master file for changes, inside of it you can find commands as:
<Property name="NAME OF THE PROPERTY" overridable="true" targetFile="codebase/WEB-INF/conf/wvs.properties" value="VALUE FOR THE PROPERTY"
And there is your wvs.properties, in the path <Windchill root folder>/Windchill/codebase/WEB-INF/conf/wvs.properties
After that, all the chagest must be realized in the site.xconf ussing that style. You can't change wvs.properties directly.
When you finish to change/add/delete etc all the properties in site.xconf, you must go to windchill shell and write:
xconfmanager -p
This is the step by step method for changes, for your security.
severals of the changes need that you reboot Windchill, other only the background.