Understanding that Installers are Not Backward Compatible

OUI is not compatible between OUI versions. This means that if the OUI version changes between Tools Releases, all the Development Client installations must be uninstalled and new installations of a full package using the new OUI must be performed. When a Development Client is uninstalled or saved by using SnapShot, the WLSH4A or WASH4A is automatically removed or saved.

See Editing oraparam.ini for the Development Client Installer During an Update or Upgrade for information about the OUI versions.

The following examples are of a few configurations that are not allowed:

• A package being installed with one version of OUI cannot be installed on an existing Development Client installation that used a different version of OUI.
• A WLSH4A or WASH4A installed with one version of OUI cannot be installed on an existing Development Client installation that used a different version of OUI.
• The OUI versions of Development Client, WLSH4A, and WASH4A installers cannot be different.
• The OUI installers’ directories cannot contain any files from previous OUI installers.