Hi there, we have set up JBoss-Cache 3.1.0.GA (hibernate-jbosscache2 3.3.2.GA) as a 2nd-Level-Cache for Hibernate running under WebLogic 10.0 successfully within a Cluster running different nodes on different machines. The Cache configuration seems to work without any errors or any disapperance of data. However, we are facing a strange warning within our logs for the JBoss-Cache: "WARN ;Multiplexer-1;Unknown replication version [999]. Falling back to the default marshaller installed." We are using this configuration for the persistence.xml [...] <property name="hibernate.cache.use_second_level_cache" value="true/> <property name="hibernate.cache.use_query_cache" value="true"/> <property name="hibernate.cache.region.factory_class" value="org.hibernate.cache.jbc2.SharedJBossCacheRegionFactory"/> <property name="hibernate.cache.use_structured_entries" value="true"/> <property name="hibernate.cache.use_structured_cache_entries" value="true"/> <property name="hibernate.cache.region.jbc2.cfg.shared" value="treecache.xml"/> [...] and this is our configuration for the treecache.xml ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ <?xml version="1.0" encoding="UTF-8"?> <!-- <jbosscache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:jboss:jbosscache-core:config:3.1" xsi:schemaLocation="urn:jboss:jbosscache-core:config:3.1 /schema/jbosscache-config-3.1.xsd"> --> <jbosscache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:jboss:jbosscache-core:config:3.1"> <transaction transactionManagerLookupClass="org.jboss.cache.transaction.GenericTransactionManagerLookup" syncRollbackPhase="false" syncCommitPhase="false" /> <locking isolationLevel="REPEATABLE_READ" lockParentForChildInsertRemove="false" lockAcquisitionTimeout="15000" nodeLockingScheme="mvcc" writeSkewCheck="false" useLockStriping="true" concurrencyLevel="500" /> <serialization objectInputStreamPoolSize="12" objectOutputStreamPoolSize="14" version="3.0.0" marshallerClass="org.jboss.cache.marshall.CacheMarshaller300" useLazyDeserialization="false" useRegionBasedMarshalling="true"/> <startup regionsInactiveOnStartup="true"/> <eviction wakeUpInterval="5"> <default algorithmClass="org.jboss.cache.eviction.LRUAlgorithm" actionPolicyClass="org.jboss.cache.eviction.DefaultEvictionActionPolicy" eventQueueSize="200000"> <property name="maxNodes" value="10000"/> <property name="timeToLive" value="1000"/> </default> <region name="/_default_" algorithmClass="org.jboss.cache.eviction.LRUAlgorithm" actionPolicyClass="org.jboss.cache.eviction.DefaultEvictionActionPolicy" eventQueueSize="100000"> <property name="maxNodes" value="10000"/> <property name="timeToLive" value="1000"/> <property name="minTimeToLive" value="120"/> </region> <!-- Never evict the UpdateTimeStampsCache according to http://docs.jboss.org/hibernate/stable/core/reference/en/html/performance... --> <region name="/TS" algorithmClass="org.jboss.cache.eviction.NullEvictionAlgorithm" actionPolicyClass="org.jboss.cache.eviction.DefaultEvictionActionPolicy" eventQueueSize="100000"> </region> </eviction> <clustering mode="replication" clusterName="${uniqueDI}"> <async useReplQueue="true" replQueueInterval="10000" replQueueMaxElements="500" serializationExecutorPoolSize="20" serializationExecutorQueueSize="5000000"/> <stateRetrieval timeout="20000" fetchInMemoryState="false"/> <jgroupsConfig multiplexerStack="udp"/> </clustering> </jbosscache> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ We tried to change marshallerClass to "org.jboss.cache.marshall.VersionAwareMarshaller", but then we are facing a Null Pointer Exception: 2011-01-14 12:37:42,655;ERROR;AsyncReplicationProcessor-1;java.lang.NullPointerException: <no message available (3)> Stack trace: org.jboss.cache.marshall.VersionAwareMarshaller.objectToObjectStream(VersionAwareMarshaller.java:340) org.jboss.cache.marshall.VersionAwareMarshaller.objectToBuffer(VersionAwareMarshaller.java:182) org.jboss.cache.marshall.VersionAwareMarshaller.objectToBuffer(VersionAwareMarshaller.java:52) org.jboss.cache.marshall.CommandAwareRpcDispatcher$ReplicationTask.call(CommandAwareRpcDispatcher.java:369) Is there anybody who can help and might tell us what is wrong here? Any help will be appreciated. Regards, Christian Steria Mummert Consulting AG Vorsitzender des Aufsichtsrates: Jürgen Sponnagel - Vorstand: Oliver Nazet (Vors.), Dr. Reinhard Liedl, Dr. Fritz Moser Gesellschaftssitz: Hamburg - HR B 61 116 Amtsgericht Hamburg - USt-ID-Nr.: DE118671351 Bitte denken Sie an Ihre Verantwortung gegenüber der Umwelt: Jede ausgedruckte E-Mail verursacht ca. 0,3 Gramm CO2. Diese Nachricht kann vertrauliche Informationen enthalten und ist allein für den Adressaten bestimmt. Wenn Sie nicht der rechtmäßige Empfänger sind, sind der Zugriff, die Weiterleitung, das Kopieren, die Veröffentlichung oder anderweitige Verwendung des Inhalts untersagt. In diesem Fall bitten wir Sie, den Absender unverzüglich zu informieren und diese E-Mail sowie sämtliche Kopien dieser E-Mail zu löschen. Der Inhalt von E-Mails innerhalb des Netzwerks kann überprüft werden, um die Übereinstimmung mit den geltenden Firmenrichtlinien und Vorgehensweisen zu gewährleisten. 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