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https://issues.apache.org/jira/browse/OPENJPA-2193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13411612#comment-13411612
]
Daniel Persson commented on OPENJPA-2193:
-----------------------------------------
<persistence xmlns="http://java.sun.com/xml/ns/persistence";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; version="1.0">
<persistence-unit name="testDbPersistence"
transaction-type="RESOURCE_LOCAL">
<non-jta-data-source>java:comp/env/jdbc/testDb</non-jta-data-source>
<!-- entity classes -->
<properties>
<property name="openjpa.ConnectionDriverName"
value="com.mysql.jdbc.Driver" />
<property name="openjpa.ConnectionProperties"
value="autoReconnect=false,connectTimeout=5,socketTimeout=5" />
<property name="openjpa.jdbc.DBDictionary"
value="mysql(SupportsSubselect=true,UseClobs=true)"/>
<property name="openjpa.jdbc.UpdateManager"
value="operation-order"/>
<property name="openjpa.DataCache"
value="true(CacheSize=1000, SoftReferenceSize=0, EnableStatistics=true)"/>
<property name="openjpa.QueryCache"
value="true(CacheSize=200, SoftReferenceSize=0, EvictPolicy='timestamp')"/>
<property name="openjpa.Log"
value="File=/tmp/openjpa.log, DefaultLevel=WARN, Runtime=WARN, Tool=WARN,
SQL=WARN"/>
<property name="openjpa.DetachState"
value="fetch-groups(DetachedStateField=true)"/>
<property name="openjpa.FetchBatchSize" value="0"/>
<property name="openjpa.InverseManager" value="true"/>
</properties>
</persistence-unit>
</persistence>
> Nullpointer exception when persisting object during high load
> -------------------------------------------------------------
>
> Key: OPENJPA-2193
> URL: https://issues.apache.org/jira/browse/OPENJPA-2193
> Project: OpenJPA
> Issue Type: Bug
> Reporter: Daniel Persson
> Priority: Minor
> Attachments: patch-tomcat-pooling-fix.patch
>
>
> During high load and many persists _conn is null during commit.
> Caused by: <openjpa-2.2.0-r422266:1244990 nonfatal general error>
> org.apache.openjpa.persistence.PersistenceException: null
> at
> org.apache.openjpa.kernel.BrokerImpl.afterCompletion(BrokerImpl.java:2034)
> at
> org.apache.openjpa.kernel.LocalManagedRuntime.commit(LocalManagedRuntime.java:94)
> at org.apache.openjpa.kernel.BrokerImpl.commit(BrokerImpl.java:1514)
> at
> org.apache.openjpa.kernel.DelegatingBroker.commit(DelegatingBroker.java:933)
> at
> org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:570)
> ... 29 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.openjpa.jdbc.kernel.JDBCStoreManager.commit(JDBCStoreManager.java:196)
> at
> org.apache.openjpa.kernel.DelegatingStoreManager.commit(DelegatingStoreManager.java:95)
> at
> org.apache.openjpa.datacache.DataCacheStoreManager.commit(DataCacheStoreManager.java:88)
> at
> org.apache.openjpa.kernel.DelegatingStoreManager.commit(DelegatingStoreManager.java:95)
> at
> org.apache.openjpa.kernel.BrokerImpl.endStoreManagerTransaction(BrokerImpl.java:1471)
> at
> org.apache.openjpa.kernel.BrokerImpl.endTransaction(BrokerImpl.java:2351)
> at
> org.apache.openjpa.kernel.BrokerImpl.afterCompletion(BrokerImpl.java:2010)
> ... 33 more
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