Hello! I'm having an interesting problem wherein about 5-10% of the time, for
no apparent reason whatsover, the MySQL driver just can not be found. I have
a symlink to it in TOMCAT_DIR/common/lib. I just replaced the symlink with a
copy of the actual library to see if that would make a difference, but it
doesn't make sense that it would work 90-95% of the time and then fail the
rest of the time if that were the problem.
The traceback I get is as follows:
// NOTE: replaced org.apache. with ''.
Cannot load JDBC driver class 'com.mysql.jdbc.jdbc2.optional.MysqlDataSource'
java.lang.ClassNotFoundException:
com.mysql.jdbc.jdbc2.optional.MysqlDataSource
at
catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:854)
at
catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:721)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at
commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:760)
at
commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:540)
at RequestFilterServlet.getUrlMapping(RequestFilterServlet.java:187)
at RequestFilterServlet.doFilter(RequestFilterServlet.java:277)
at
catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at
catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at
catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at
catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at
catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at
catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)
at
catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at
catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at
catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at
catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300)
at jk.common.HandlerRequest.invoke(HandlerRequest.java:374)
at jk.common.ChannelSocket.invoke(ChannelSocket.java:743)
at jk.common.ChannelSocket.processConnection(ChannelSocket.java:675)
at jk.common.SocketConnection.runIt(ChannelSocket.java:866)
at
tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)
Any suggestions welcome. Thanks.
--Kaleb
PS: I'm using tomcat 5.0.28 and version 3.0.15 of the MySQL connector.
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