0 Replies Latest reply on Apr 21, 2006 2:17 AM by manjith27

Strange Behaviour with JBoss using Cache and JCA

manjith27 Apr 21, 2006 2:17 AM

Hi,

I am using Hibernate 3.1, JBoss 4.0.2 and Oracle 10g as the Database.

I am using JCA and Caching. I have implemented JBossCacheService for caching. I am experiencing a strange behaviour whenever the Jboss is started for every 1st request from my test JSP.Whichever method I have invoked is internally invoked as toString() instead of the actual method but from the 2nd and subsequent requests the method which is getting invoked is the same method whivh I have called from Jboss.
I feel there is something wrong with my configurations.

I have configured my oracle-xa-ds.xml as following : -

<datasources>
 <ha-xa-datasource>
 <jndi-name>XAOracleDS</jndi-name>
 <use-java-context>false</use-java-context>
 <track-connection-by-tx/>
 <isSameRM-override-value>false</isSameRM-override-value>
 <xa-datasource-class>oracle.jdbc.xa.client.OracleXADataSource</xa-datasource-class>
 <xa-datasource-property name="URL">jdbc:oracle:thin:@localhost:1521:XE|jdbc:oracle:thin:@ip:1521:test</xa-datasource-property>
 <url-property>URL</url-property>
 <url-delimeter>|</url-delimeter>
 <xa-datasource-property name="User">test</xa-datasource-property>
 <xa-datasource-property name="Password">test</xa-datasource-property>
 <min-pool-size>1</min-pool-size>
 <max-pool-size>10</max-pool-size>
 <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>
 <!-- <check-valid-connection-sql>"select count(*) from product"</check-valid-connection-sql> -->
 <!-- sql to call when connection is created -->
 <new-connection-sql>select count(*) from product</new-connection-sql>

 <metadata>
 <type-mapping>Oracle10g</type-mapping>
 </metadata>
 </ha-xa-datasource>

 <mbean code="org.jboss.resource.adapter.jdbc.vendor.OracleXAExceptionFormatter"
 name="jboss.jca:service=OracleXAExceptionFormatter">
 <depends optional-attribute-name="TransactionManagerService">jboss:service=TransactionManager</depends>
 </mbean>

</datasources>

My hibernate-cfg.xml is: -

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
 "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
 "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>

 <!-- a SessionFactory instance listed as /jndi/name -->
 <session-factory>

 <!-- properties -->

 <property name="hibernate.cache.provider_class">org.hibernate.cache.TreeCacheProvider</property>
 <property name="hibernate.cache.use_query_cache">true</property>
 <property name="hibernate.cache.use_second_level_cache">true</property>
 <property name="hibernate.cache.use_minimal_puts">true</property>
 <property name="hibernate.cache.use_structured_entries">true</property>
 <property name="current_session_context_class">thread</property>

 <property name="show_sql">true</property>
 <property name="use_outer_join">true</property>

 <!-- mapping files -->

 <mapping resource="hibernate-config/com/dnaO2/infra/persistence/bean/Basket.hbm.xml" />
 </session-factory>

</hibernate-configuration>

My treecache.xml is : -

<?xml version="1.0" encoding="UTF-8"?>

<!-- ===================================================================== -->
<!-- -->
<!-- Sample TreeCache Service Configuration -->
<!-- -->
<!-- ===================================================================== -->

<server>

 <classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar"/>


 <!-- ==================================================================== -->
 <!-- Defines TreeCache configuration -->
 <!-- ==================================================================== -->

 <mbean code="org.jboss.cache.TreeCache"
 name="jboss.cache:service=TreeCache">

 <depends>jboss:service=Naming</depends>
 <depends>jboss:service=TransactionManager</depends>

 <!--
 Configure the TransactionManager
 -->
 <attribute name="TransactionManagerLookupClass">org.jboss.cache.JBossTransactionManagerLookup</attribute>


 <!--
 Node locking level : SERIALIZABLE
 REPEATABLE_READ (default)
 READ_COMMITTED
 READ_UNCOMMITTED
 NONE
 -->
 <attribute name="IsolationLevel">SERIALIZABLE</attribute>

 <!--
 Valid modes are LOCAL
 REPL_ASYNC
 REPL_SYNC
 -->
 <attribute name="CacheMode">LOCAL</attribute>


 <!--
 Just used for async repl: use a replication queue
 -->
 <attribute name="UseReplQueue">false</attribute>

 <!--
 Replication interval for replication queue (in ms)
 -->
 <attribute name="ReplQueueInterval">20000</attribute>

 <!--
 Max number of elements which trigger replication
 -->
 <attribute name="ReplQueueMaxElements">5</attribute>


 <!-- Name of cluster. Needs to be the same for all clusters, in order
 to find each other
 -->
 <attribute name="ClusterName">TreeCache-Cluster</attribute>

 <!-- JGroups protocol stack properties. Can also be a URL,
 e.g. file:/home/bela/default.xml
 <attribute name="ClusterProperties"></attribute>
 -->

 <attribute name="ClusterConfig">
 <config>
 <!-- UDP: if you have a multihomed machine,
 set the bind_addr attribute to the appropriate NIC IP address -->
 <!-- UDP: On Windows machines, because of the media sense feature
 being broken with multicast (even after disabling media sense)
 set the loopback attribute to true -->
 <UDP mcast_addr="228.1.2.3" mcast_port="45566"
 ip_ttl="32" ip_mcast="true"
 mcast_send_buf_size="80000" mcast_recv_buf_size="150000"
 ucast_send_buf_size="80000" ucast_recv_buf_size="150000"
 loopback="true"/>
 <PING timeout="2000" num_initial_members="3"
 up_thread="false" down_thread="false"/>
 <MERGE2 min_interval="10000" max_interval="20000"/>
 <FD shun="true" up_thread="true" down_thread="true"/>
 <VERIFY_SUSPECT timeout="1500"
 up_thread="false" down_thread="false"/>
 <pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800"
 max_xmit_size="8192" up_thread="false" down_thread="false"/>
 <UNICAST timeout="600,1200,2400" window_size="100" min_threshold="10"
 down_thread="false"/>
 <pbcast.STABLE desired_avg_gossip="20000"
 up_thread="false" down_thread="false"/>
 <FRAG frag_size="8192"
 down_thread="false" up_thread="false"/>
 <pbcast.GMS join_timeout="5000" join_retry_timeout="2000"
 shun="true" print_local_addr="true"/>
 <pbcast.STATE_TRANSFER up_thread="false" down_thread="false"/>
 </config>
 </attribute>


 <!--
 The max amount of time (in milliseconds) we wait until the
 initial state (ie. the contents of the cache) are retrieved from
 existing members in a clustered environment
 -->
 <attribute name="InitialStateRetrievalTimeout">5000</attribute>

 <!--
 Number of milliseconds to wait until all responses for a
 synchronous call have been received.
 -->
 <attribute name="SyncReplTimeout">10000</attribute>

 <!-- Max number of milliseconds to wait for a lock acquisition -->
 <attribute name="LockAcquisitionTimeout">15000</attribute>

 <!-- Name of the eviction policy class. Not supported now. -->
 <attribute name="EvictionPolicyClass"></attribute>


 <attribute name="FetchStateOnStartup">true</attribute>

 </mbean>

</server>

Can anyboody explain why I am experiencing this kind of the problem.

Thanks in Advance for any suggestion.

Thanks
Manjith.