Under certain circumstances you might want to change the configuration of the portal site search collection. In this case you need to recreate the collection, as search collections cannot be modified.
The portal site default search collection is created at the first time when an administrator navigates to the search administration portlet Manage Search. This requires considerations about the configuration tasks related to the portal and Portal Search and about the sequence by which you perform these tasks. An example scenario might be that you want to perform a portal database transfer, for example, from the default database to a different database. In this case you need to create the portal site collection by navigating to the Manage Search portlet before you transfer the database. Otherwise your portal site collection will not be available after the database transfer.
If you created the portal site collection by navigating to the Manage Search portlet before you completely configured your portal and Portal Search, you might need to recreate the search collection. Example scenarios are as follows:
In such a scenario, proceed by the following steps: