Fedora maintains a set of internal indices containing information derived from the persistent storage, namely the underlying OCFL (Oxford Common File Layout). These indices currently maintain the following information: the LDP containment hierarchy, resource membership relationships, relationships between resources, searchable fields, and the relationship between Fedora resources and their associated OCFL objects. These indexes 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 at some point wish to rebuild these indices from scratch for a variety of resources. For example, it is likely that a future changes (in subsequent releases) to the index structures could require a rebuild. In that case you can accomplish this task by taking the following steps.
- Stop Fedora
- Remove the index data in your database (see instructions below for the database you are using)
- Start Fedora
Step 2 above will be accomplished differently depending on which underlying database you're using and how your system is configured.
Default (H2) Database users
To remove the default (ie H2 Database) simply delete the following files from your <fedora_home>/data directory if they exist:
- fcrepo-h2.lock.db
- fcrepo-h2.mv.db
Postgres, MariaDB, and MySQL Users
If you are using one of the three available SQL databases, you'll need to take one of the following actions:
- Drop your fcrepo database. If you have given your database a custom name that is the database you'll need to drop.
Drop or truncate the fcrepo database tables if it is not convenient to Below is a list of the affected tables.
containment containment_transactions membership mmembership_tx_operations reference reference_transaction_operations ocfl_id_map simple_search search_rdf_type search_resource_rdf_type
