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Editorial Team
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Editorial Team
Asked: June 11, 20262026-06-11T12:43:14+00:00 2026-06-11T12:43:14+00:00

I have a memory HSQLDB database with this connection URL: jdbc:hsqldb:mem:test_database It runs fine

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I have a memory HSQLDB database with this connection URL:

jdbc:hsqldb:mem:test_database

It runs fine with my application but I need to configure this database in a SQL Client.

I can’t because every clients complain that no host was found or there’s no database.

I’m not sure if I’m filling all the information correctly in “host” and “database” fields or if it is a HSQLDB memory restriction.

Has anyone got the same error?? Thanks a lot.

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  1. Editorial Team
    Editorial Team
    2026-06-11T12:43:15+00:00Added an answer on June 11, 2026 at 12:43 pm

    With :mem: you define a database which is only accessible within the running java vm. This database resides in memory and cannot be accessed externally via host/port jdbc access.

    Please read:

    • Running and Using Hsqldb
    • Advanced Topics
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