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HSQL databases can get corrupted if the disk on which data is stored runs out of space.
PostgreSQL
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version compatibility
Unimus 2.5 and older only support only PostgreSQL 11 and older. Starting with Unimus 2.6 added support for , newer versions, and PostgreSQL versions are also supported. See the table above shows for the full supported range.
To upgrade an existing PostgreSQL database, see Upgrading the PostgreSQL database.