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Editorial Team
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Asked: 2026-05-18T06:05:46+00:00

How do I configure internal event monitoring in hsqldb? When I run my Java

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How do I configure internal event monitoring in hsqldb? When I run my Java application, I get the following warnings:

log4j:WARN No appenders could be found for logger (HSQLDB2C7984E18B.org.hsqldb.persist.Logger).
log4j:WARN Please initialize the log4j system properly.

The documentation tells me log4j is not the only option, but it doesn’t tell me how to configure my application. Can anyone point me to this documentation? Remember, I don’t want to use log4j for hsqldb.

It bears mentioning that a 3rd-party jar I’m referencing requires log4j. Does hsqldb automatically detect that log4j is present and then attempt to use it? Or am I missing something fundamental about how logging works?

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1 Answer

  1. Editorial Team

    Check out this link. It says

    The logging facility hands off to Log4j if Log4j is found in the classpath, and otherwise will hand off to java.util.logging.

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