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Fedora maintains a set of internal indices containing information derived from the persistent storage, namely the underlying OCFL (Oxford Common File Layout). These indices act only as a cache of information that is persisted in the underlying OCFL and can be destroyed and rebuilt as necessary.
These indices currently maintain the following information:
- the LDP containment hierarchy
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- resource membership relationships
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- relationships between resources
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- searchable fields, and
- the relationship between Fedora resources and their associated OCFL objects.
These indexes indices are built initially when Fedora is started for the first time on a non-empty OCFL. As content is added, updated and deleted, the indices are updated accordingly. You many may at some point wish to rebuild these indices from scratch for a variety of resourcesreasons. For example, it is likely that a future changes change (in subsequent releases) to the index structures could require a rebuild. In that case you can accomplish this task by taking the following steps.
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Step 2 above will be accomplished differently depending on which underlying database you're using and how your system is configured.
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Embedded (H2) Database users
NOTE: The H2 database should not be used in a production installation.
To remove the default (ie H2 Databasedatabase) simply delete the following files from your <fedora_home>/data directory if they exist:
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