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0001 .. meta:: 0002 :description: digiKam Maintenance Tool Database Cleaning 0003 :keywords: digiKam, documentation, user manual, photo management, open source, free, learn, easy, maintenance, database, cleanup, Shrink 0004 0005 .. metadata-placeholder 0006 0007 :authors: - digiKam Team 0008 0009 :license: see Credits and License page for details (https://docs.digikam.org/en/credits_license.html) 0010 0011 .. _maintenance_database: 0012 0013 Database Cleaning 0014 ================= 0015 0016 .. contents:: 0017 0018 .. figure:: images/maintenance_database_cleaning.webp 0019 :alt: 0020 :align: center 0021 0022 The digiKam Maintenance Database Options 0023 0024 This process will analysis your database files to consolidate the contents. The Core database is always cleaned. You can select additional databases for cleaning by selecting one of the extra options listed below: 0025 0026 - **Cleanup the Thumbnails database**. 0027 0028 - **Cleanup the Faces database**. 0029 0030 - **Cleanup the Similarity database**. 0031 0032 - **Shrink all databases** to ensure de-fragmentation and just keeps the database small. 0033 0034 .. note:: 0035 0036 The last option leads to the vacuuming (shrinking) of the databases. Vacuuming is supported both for SQLite and MySQL. 0037 0038 While the scan for new items process is under progress, as the process may take much time and digiKam cannot be used, a non modal dialog appear to make sure that no database corruption occurs. 0039 0040 .. figure:: images/maintenance_database_process.webp 0041 :alt: 0042 :align: center 0043 0044 The digiKam Database process Working in the Background.