Question

我在部署应用程序时遇到错误。

环境是：

Jboss 7.1.3 + Hibernate 4 + JPA
OJDBC：ojdbc6.jar

堆栈跟踪如下，

09:13:30,703 WARN  [org.hibernate.engine.jdbc.internal.JdbcServicesImpl] (ServerService Thread Pool -- 127) HHH000341: Could not obtain connection metadata : could not turn on auto-commit in an active global transaction
09:13:30,703 INFO  [org.hibernate.engine.jdbc.internal.LobCreatorBuilder] (ServerService Thread Pool -- 127) HHH000422: Disabling contextual LOB creation as connection was null
09:13:30,704 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 127) MSC00001: Failed to start service jboss.persistenceunit."css-ear-0.5.3-SIT.ear/css-submission-0.5.3-SIT.war#css-submission-PU": org.jboss.msc.service.StartException in service jboss.persistenceunit."css-ear-0.5.3-SIT.ear/css-submission-0.5.3-SIT.war#css-submission-PU": java.lang.NullPointerException
    at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:100) [jboss-as-jpa-7.1.3.Final.jar:7.1.3.Final]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_21]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_21]
    at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_21]
    at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.0.0.GA.jar:2.0.0.GA]
Caused by: java.lang.NullPointerException
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:207)
    at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:75)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)
    at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:73)
    at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2279)
    at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2275)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1744)
    at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:94)
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:905)
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:890)
    at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:74)
    at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:197) [jboss-as-jpa-7.1.3.Final.jar:7.1.3.Final]
    at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.access$500(PersistenceUnitServiceImpl.java:57) [jboss-as-jpa-7.1.3.Final.jar:7.1.3.Final]
    at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:96) [jboss-as-jpa-7.1.3.Final.jar:7.1.3.Final

standalone.xml中的数据源配置是

<xa-datasource jta="true" jndi-name="java:jboss/datasources/PsaDS" pool-name="PsaDS" enabled="true" use-java-context="true" use-ccm="true">
  <xa-datasource-property name="URL">
        jdbc:oracle:thin:@<hsot>
  </xa-datasource-property>
  <driver>oracle</driver>
  <transaction-isolation>TRANSACTION_READ_COMMITTED</transaction-isolation>
  <xa-pool>
        <min-pool-size>2</min-pool-size>
        <max-pool-size>50</max-pool-size>
        <prefill>true</prefill>
  </xa-pool>
  <security>
        <user-name>user</user-name>
        <password>pwd</password>
  </security>

我们使用的驱动程序是，

<drivers>
  <driver name="oracle" module="com.oracle.ojdbc6">
        <xa-datasource-class>oracle.jdbc.xa.client.OracleXADataSource</xa-datasource-class>
  </driver></drivers>

Answer 1

我从未使用过JBoss + Hibernate。所以我不尝试这种调整。只阅读一些文档。请尝试这些调整：

A）Hibernate属性

需要调整hibernate.properties。我在文档中找到了这个可选属性：

hibernate.connection.autocommit

为JDBC池连接启用自动提交（不是   推荐）。

e.g。是的|假

documentation link

B）standalone.xml

<share-prepared-statements> - 目的是解决方法驱动程序应用自动提交时可疑的驱动程序行为语义到本地事务。准备好语句缓存同一事务中的两个请求是否应该返回相同声明（来自jboss-4.0.2 - 默认为false）。

Connection c = dataSource.getConnection(); // auto-commit == false 
PreparedStatement ps1 = c.prepareStatement(...);    
ResultSet rs1 = ps1.executeQuery();    
PreparedStatement ps2 = c.prepareStatement(...);    
ResultSet rs2 = ps2.executeQuery();

假设准备好的陈述是相同的。对于一些司机， ps2.executeQuery（）会自动关闭rs1，所以我们确实需要幕后的两个真实准备的陈述。这应该只是对于自动提交语义，其中重新运行查询开始一个新的交易自动。对于遵循规范的驱动程序，您可以将其设置为true以共享相同的真实预处理语句。

documentation link

Answer 2

尝试对<xa-datasource>定义标记中的standalone.xml进行以下更改：

在<xa-pool>标记内添加以下内容：

<is-same-rm-override>false</is-same-rm-override>
<no-tx-separate-pools>true</no-tx-separate-pools>

根据文件：

no-tx-separate-pools：此元素的存在表示需要两个连接池来隔离与JTA事务一起使用的连接与不使用JTA事务的连接。游泳池在首次使用时可以舒适地建造。它的用例适用于Oracle（以及可能的其他供应商）XA实现，它们不喜欢在有和没有JTA事务的情况下使用XA连接。

如果这不能单独使用，请尝试在<xa-datasource>定义中添加：

<validation>
      <valid-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.oracle.OracleValidConnectionChecker"/>
      <stale-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.oracle.OracleStaleConnectionChecker"/>
      <exception-sorter class-name="org.jboss.jca.adapters.jdbc.extensions.oracle.OracleExceptionSorter"/>
</validation>

Hibernate错误：无法在活动的全局事务中打开自动提交

2 个答案: