Oracle Spatial and Oracle Context are database options that would be covered by the upgrade procedures for the database. If you found an Oracle Portal repository (as indicated by the presence of a schema named portal30), you should ensure that the version of Oracle Portal in use is supported by the database version you're upgrading to. That will be complicated by the fact that if, as the schema name indicates, the Portal is version 3.0.x, it's somewhat dated and you will likely need (or at least you should) to upgrade Portal as well.
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