The codebase is the URL from which Instant Messenger accesses resources, including the start page for initial downloads of the Instant Messaging client. This URL is defined during postinstallation configuration when the resource files are deployed by the configure utility. If you change any portion of the URL used to access Instant Messenger resources including the web container port number you need to update the codebase.
If you want to change the codebase after you have deployed the resource files you will need to:
Modify the template files to point to the new URL. See To Change the Codebase in the Resource Templates.
Run the configure utility, selecting the “Messenger Resources” component only when prompted for which components you want to configure. See Configuring Instant Messaging After Installing or Upgrading for instructions.
Redeploy the resource files. See Redeploying Resource Files for instructions.
Edit each of the template files in the im-svr-base/html directory with the new URL.
Template files are named *.template. See Instant Messenger Resource Files for a complete list of template files.