Mysql not reconnecting with JNDI Tomcat 6

I am using JNDI with Tomcat6 to manage Mysql connections, my Catalina/domain.com/ROOT.xml has:

<Resource name="jdbc/db" auth="Container" type="javax.sql.DataSource"
   username="db1" password="somepass" driverClassName="com.mysql.jdbc.Driver"             
   url="jdbc:mysql://localhost:3306/db?autoReconnect=true" maxActive="15" maxIdle="3"  
   maxWait="5000" removeAbandoned="true" removeAbandonedTimeout="20" />

I tho开发者_运维问答ugh autoReconnect will do the job reconnecting to database but it does not, after about 8 hours of inactivity my app spits out lost connection to database errors. Any ideas?

Thanks, Fedor

Dont use autoReconnect. There are problems with it and it's been deprecated. For example, you could have a disconnect/reconnect event happen while a thread is using the connection. I would instead have your connection pool test connections with testOnBorrow before passing them to the app. Here is an example:

<Resource name="jdbc/db"
          auth="Container"
          type="javax.sql.DataSource"
          username="db1"
          password="somepass"
          driverClassName="com.mysql.jdbc.Driver"
          url="jdbc:mysql://localhost:3306/db"
          maxActive="15"
          maxIdle="3"
          maxWait="5000"
          removeAbandoned="true"
          removeAbandonedTimeout="20"
          logAbandoned="true"
          factory="org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory"
          validationQuery="select 1"
          minEvictableIdleTimeMillis="3600000"
          timeBetweenEvictionRunsMillis="1800000"
          numTestsPerEvictionRun="10"
          testWhileIdle="true"
          testOnBorrow="true"
          testOnReturn="false"
          />