我正在尝试在部署在Glassfish上的Java EE应用程序中,在同一个事务中使用2个持久性单元。
这2个持久化单元在persistence.xml中定义如下:
<persistence-unit name="BeachWater">
<jta-data-source>jdbc/BeachWater</jta-data-source>
...
<persistence-unit name="LIMS">
<jta-data-source>jdbc/BeachWaterLIMS</jta-data-source>
...
这些持久性单元对应于我在Glassfish中定义的JDBC资源和连接池(包括一个示例,两者除名称和数据库连接信息外完全相同):
JDBC Resource:
JNDI Name: jdbc/BeachWaterLIMS
Pool Name: BEACHWATER_LIMS
Connection Pool:
Name: BEACHWATER_LIMS
Datasource Classname: com.microsoft.sqlserver.jdbc.SQLServerConnectionPoolDataSource
Resource Type: javax.sql.ConnectionPoolDataSource
有三个无状态会话Bean,LimsServiceBean、AnalysisServiceBean和AnalysisDataTransformationServiceBean。
以下是LimsServiceBean中相关的代码片段:
@PersistenceContext(unitName = "LIMS")
EntityManager em;
...
public ArrayList<Sample> getLatestLIMSData() {
Query q = em.createNamedQuery("Sample.findBySubTypeStatus");
return new ArrayList<Sample>(q.getResultList());
}
来自AnalysisServiceBean:
@PersistenceContext(unitName = "BeachWater")
EntityManager em;
...
public ArrayList<AnalysisType> getAllAnalysisTypes() {
Query q = em.createNamedQuery("AnalysisType.findAll");
return new ArrayList<AnalysisType>(q.getResultList());
}
同时来看 AnalysisDataTransformationServiceBean:
@EJB
private AnalysisService analysisService;
@EJB
private LimsService limsService;
public void transformData() {
List<AnalysisType> analysisTypes = analysisService.getAllAnalysisTypes();
ArrayList<Sample> samples = limsService.getLatestLIMSData();
调用limsService.getLatestLIMSData()时出现以下异常:
[exec] Caused by: javax.ejb.TransactionRolledbackLocalException: Exception thrown from bean; nested exception is: Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.1 (Build b60e-fcs (12/23/2008))): oracle.toplink.essentials.exceptions.DatabaseException
[exec] Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: java.lang.IllegalStateException: Local transaction already has 1 non-XA Resource: cannot add more resources.
在查看了许多资料之后,包括http://msdn.microsoft.com/en-us/library/ms378484.aspx,我尝试将连接池的定义更改为:
Connection Pool:
Name: BEACHWATER_LIMS
Datasource Classname: com.microsoft.sqlserver.jdbc.SQLServerXADataSource
Resource Type: javax.sql.XADataSource
通过Glassfish管理控制台进行的Ping测试成功,但现在调用analysisService.getAllAnalysisTypes()时出现异常:
Caused by: javax.ejb.TransactionRolledbackLocalException: Exception thrown from bean; nested exception is: Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.1 (Build b60e-fcs (12/23/2008))): oracle.toplink.essentials.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: javax.transaction.SystemException
The resource manager is doing work outside a global transaction javax.transaction.xa.XAException: com.microsoft.sqlserver.jdbc.SQLServerException: Failed to create the XA control connection. Error: "Could not find stored procedure 'master..xp_sqljdbc_xa_init_ex'."
有什么想法吗?