Castor version: 0.9.6 Database: Oracle 9i OS: Solaris 9 Castor is the primary communication mechanism between a very database intensive web application and the oracle database. In the case of this particular exception, castor is trying to load a NavPage object, which is essentially a page within the website hierarchy.
The database is on a completely separate machine from the app server; This is the first time I have deployed castor to such an environment, though I have used it successfully with a local database for years. I don't think it is a Castor problem per se, but if the database experiences an outage or the network communication is slowed could that cause the problem we are seeing here? -August --- Werner Guttmann <[EMAIL PROTECTED]> wrote: > August, > > yes, it seems like Castor JDO is trying to acquire locks all over the > place. Can you share some information on how you are trying to use > Castor ? And most importantly, what version of Castor are you using ? > On what OS ? What database system ? Etc. > > Werner > > PS You could try to set a timeout and see whether this resolves your > problem. Or at the minimum, you'll propably see > LockNotGrantedExceptions after the timeout period you specified. > > -----Ursprüngliche Nachricht----- > Von: August Detlefsen [mailto:[EMAIL PROTECTED] > Gesendet: Montag, 29. August 2005 19:41 > An: dev@castor.codehaus.org > Betreff: [castor-dev] ObjectLock.acquireLoadLock using up all > threads? > > > I've been seeing my server fail many times over the past few days and > when it does the thread dump is always full of these stack traces > (like > every single processor thread). > > I read them to mean that Castor is waiting on database resources. Is > that correct? Can anyone shed some light as to what is happening > here? > > Thanks, > August > > > "http-80-Processor15" daemon prio=10 tid=0x08869b50 nid=0x19 in > Object.wait() [0x71467000..0x71468cb8] > at java.lang.Object.wait(Native Method) > at java.lang.Object.wait(Object.java:474) > at > org.exolab.castor.persist.ObjectLock.acquireLoadLock(ObjectLock.java:385) > - locked <0x7f7549e8> (a > org.exolab.castor.persist.ObjectLock) > at > org.exolab.castor.persist.LockEngine$TypeInfo.acquire(LockEngine.java:1252) > at > org.exolab.castor.persist.LockEngine$TypeInfo.access$300(LockEngine.java:1055) > at > org.exolab.castor.persist.LockEngine.load(LockEngine.java:357) > at > org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:698) > - locked <0x7fa77578> (a > org.exolab.castor.jdo.engine.TransactionContextImpl) > at > org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:604) > - locked <0x7fa77578> (a > org.exolab.castor.jdo.engine.TransactionContextImpl) > at > org.exolab.castor.persist.ClassMolder.load(ClassMolder.java:810) > at > org.exolab.castor.persist.LockEngine.load(LockEngine.java:361) > at > org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:698) > - locked <0x7fa77578> (a > org.exolab.castor.jdo.engine.TransactionContextImpl) > at > org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:604) > - locked <0x7fa77578> (a > org.exolab.castor.jdo.engine.TransactionContextImpl) > at > org.exolab.castor.persist.ClassMolder.load(ClassMolder.java:810) > at > org.exolab.castor.persist.LockEngine.load(LockEngine.java:361) > at > org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:698) > - locked <0x7fa77578> (a > org.exolab.castor.jdo.engine.TransactionContextImpl) > at > org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:604) > - locked <0x7fa77578> (a > org.exolab.castor.jdo.engine.TransactionContextImpl) > at > org.exolab.castor.persist.ClassMolder.load(ClassMolder.java:810) > at > org.exolab.castor.persist.LockEngine.load(LockEngine.java:361) > at > org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:698) > - locked <0x7fa77578> (a > org.exolab.castor.jdo.engine.TransactionContextImpl) > at > org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:604) > - locked <0x7fa77578> (a > org.exolab.castor.jdo.engine.TransactionContextImpl) > at > org.exolab.castor.jdo.engine.DatabaseImpl.load(DatabaseImpl.java:316) > at > org.exolab.castor.jdo.engine.DatabaseImpl.load(DatabaseImpl.java:329) > at > com.mycompany.servlets.content.PageController.getNavPage(PageController.java:835) > at > org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:139) > at > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) > at > javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291) > at > org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241) > at > javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at com.mycompany.SSOFilter.doFilter(SSOFilter.java:187) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:204) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at > org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:526) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856) > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744) > at > org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at > org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:595) > > > ------------------------------------------------- > If you wish to unsubscribe from this list, please > send an empty message to the following address: > > [EMAIL PROTECTED] > ------------------------------------------------- > > > > ------------------------------------------------- > If you wish to unsubscribe from this list, please > send an empty message to the following address: > > [EMAIL PROTECTED] > ------------------------------------------------- > > ------------------------------------------------- If you wish to unsubscribe from this list, please send an empty message to the following address: [EMAIL PROTECTED] -------------------------------------------------
