P6spy doesn't spy on hsql jdbc driver
문제
When trying to spy on the jdbc connection to a hsqldb database it doesn't work. It looks like the org.hsqldb.jdbcDriver is not deregistered.
해결책
The solution is to deregister both drivers registered by hsqldb.jar.
In spy.properties you should have
realdriver=org.hsqldb.jdbcDriver
realdriver2=org.hsqldb.jdbc.JDBCDriver
deregisterdrivers=true
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