This is a production site. We use Tomcat 4.1. website stops answering requests from time to time
Our website is under very high daily volume. Several times a week, no requests are answered. Here is the log exception: java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:782) at java.util.HashMap$EntryIterator.next(HashMap.java:824) at java.util.HashMap.writeObject(HashMap.java:976) at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at java.io.ObjectStreamClass.invokeWriteObject (ObjectStreamClass.java:809) at java.io.ObjectOutputStream.writeSerialData (ObjectOutputStream.java:1296) at java.io.ObjectOutputStream.writeOrdinaryObject (ObjectOutputStream.java:1247) at java.io.ObjectOutputStream.writeObject0 (ObjectOutputStream.java:1052) at java.io.ObjectOutputStream.writeObject (ObjectOutputStream.java:278) at org.apache.catalina.session.StandardSession.writeObject (StandardSession.java:1429) at org.apache.catalina.session.StandardSession.writeObjectData (StandardSession.java:852) at org.apache.catalina.session.JDBCStore.save (JDBCStore.java:690) at org.apache.catalina.session.PersistentManagerBase.writeSession (PersistentManagerBase.java: 739) at org.apache.catalina.session.PersistentManagerBase.processMaxIdleBackups (PersistentManagerBase.java :1063) at org.apache.catalina.session.PersistentManagerBase.processPersistenceChecks(PersistentManagerBase.ja va:477) at org.apache.catalina.session.PersistentManagerBase.run (PersistentManagerBase.java:1141) at java.lang.Thread.run(Thread.java:534) Thanks in Advance, inr.. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com