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ÑÏÖØ: A web application registered the JBDC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
2010-5-20 14:35:20 org.apache.catalina.loader.WebappClassLoader clearReferencesStopTimerThread
ÑÏÖØ: A web application appears to have started a TimerThread named [MySQL Statement Cancellation Timer] via the java.util.Timer API but has failed to stop it. To prevent a memory leak, the timer (and hence the associated thread) has been forcibly cancelled.
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but failed to unregister it when the web application was stopped.
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To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
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jspºÍtomcatÎÊÌ⣬¿ì·èÁË - Java / Java EE

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mysql ÀÛ¼ÓÔËËã - ÆäËûÊý¾Ý¿â¿ª·¢ / MySQL/Postgresql

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declare i int default 0;
while i<11 do
set i=i+1;
select i;
end while;
end //
delimiter ;
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