This is a question for the tomcat-user list.
Mark
Ayyanar Inbamohan wrote:
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..
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