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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 17581] New: - Servlet loading twice on startup
Date Mon, 03 Mar 2003 09:36:50 GMT
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=17581

Servlet loading twice on startup

           Summary: Servlet loading twice on startup
           Product: Tomcat 4
           Version: 4.0 Beta 1
          Platform: PC
        OS/Version: Other
            Status: UNCONFIRMED
          Severity: Critical
          Priority: Other
         Component: Webapps:Administration
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: anoopv@quinnox.com


Hi,
 
I have a requirement in which i need to load the servlet on startup. The 
Servlet then performs some database activities.
 
But when i try to it, my servlet loads twice and later on give the following 
error.
 
TyrexDataSourceFactory:  Cannot create DataSource, Exception
java.lang.ClassNotFoundException: org.hsql.jdbcDriver
        at org.apache.catalina.loader.StandardClassLoader.loadClass
(StandardClass
Loader.java:1127)
        at org.apache.catalina.loader.StandardClassLoader.loadClass
(StandardClass
Loader.java:992)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:322)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:130)
        at org.apache.naming.factory.TyrexDataSourceFactory.getObjectInstance
(Tyr
exDataSourceFactory.java:210)
        at org.apache.naming.factory.ResourceFactory.getObjectInstance
(ResourceFa
ctory.java:165)
        at javax.naming.spi.NamingManager.getObjectInstance
(NamingManager.java:31
1)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:835)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:181)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:822)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:194)
        at com.necpc.db.ConnectionManager.createConnection
(ConnectionManager.java
:44)
        at com.necpc.store.ServiceStore.getDBConnection(ServiceStore.java:52)
        at com.necpc.store.ServiceStore.<init>(ServiceStore.java:41)
        at com.necpc.util.requestInfoValidation.VerifyService
(requestInfoValidati
on.java:92)
        at com.necpc.util.TimerHttpTest.run(TimerHttpTest.java:51)
        at java.util.TimerThread.mainLoop(Timer.java:432)
        at java.util.TimerThread.run(Timer.java:382)
javax.naming.NamingException: Exception creating DataSource: org.hsql.jdbcDriver
        at org.apache.naming.factory.TyrexDataSourceFactory.getObjectInstance
(Tyr
exDataSourceFactory.java:233)
        at org.apache.naming.factory.ResourceFactory.getObjectInstance
(ResourceFa
ctory.java:165)
        at javax.naming.spi.NamingManager.getObjectInstance
(NamingManager.java:31
1)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:835)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:181)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:822)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:194)
        at com.necpc.db.ConnectionManager.createConnection
(ConnectionManager.java
:44)
        at com.necpc.store.ServiceStore.getDBConnection(ServiceStore.java:52)
        at com.necpc.store.ServiceStore.<init>(ServiceStore.java:41)
        at com.necpc.util.requestInfoValidation.VerifyService
(requestInfoValidati
on.java:92)
        at com.necpc.util.TimerHttpTest.run(TimerHttpTest.java:51)
        at java.util.TimerThread.mainLoop(Timer.java:432)
        at java.util.TimerThread.run(Timer.java:382)
 
 
In case u have the solution or fix i would be obliged if you provide me woth 
the same.
 
I feel this could be because the servlet is getting oinvoked twice on load. 
Please Suggest??

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