我使用以下方法为我们的单元测试设置了 JTA：
- 阿托米科斯 (3.8)
- 休眠 (3.2.6/3.3.2)
- 弹簧 (3.1)
经过相当多的努力，我设法使用 HyperSQL 内存数据库、2 个 XA 数据源和 org.apache.naming.java.javaURLContextFactory 启动并运行它，用于设置 JNDI 注册表和以下 jta.properties：
com.atomikos.icatch.enable_logging=true
com.atomikos.icatch.service=com.atomikos.icatch.standalone.UserTransactionServiceFactory
com.atomikos.icatch.max_timeout=2000000
com.atomikos.icatch.log_base_dir=./
com.atomikos.icatch.output_dir=./
com.atomikos.icatch.console_log_level=DEBUG
java.naming.factory.initial=org.apache.naming.java.javaURLContextFactory
com.atomikos.icatch.tm_unique_name=transactionManager
在单元测试（注释为需要事务的类）中，我创建并用测试数据填充数据库（之前），在测试中我尝试获取表列表。
但是，在我执行了第一个 sql 语句（在 1 个 SQL 语句中创建模式、表和数据）之后，Atomikos 似乎关闭了我的连接，阻止我继续并从新表中获取内容列表。异常状态：
XA resource 'jdbc/loaniq/reader': resume for XID '7472616E73616374696F6E4D616E6167657230303030313030303036:7472616E73616374696F6E4D616E6167657231' raised 0: unknown
当我创建数据库并仅在此事务单元测试的一种测试方法中获取数据时，也会发生这种情况。
这篇文章建议向数据源 bean 添加一个测试查询，但是在这种情况下，这会导致无限循环无法找到任何工作连接。
因此我的问题是：如何防止 Atomikos 通过池中的 JDBCXAResource 连接关闭？
下面的一些测试日志显示我能够创建数据库，但之后无法再使用我的数据源：
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: toString returning org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb
DEBUG 17:22:30 [AbstractXPooledConnection ] an AtomikosXAPooledConnection with a SessionHandleState with 1 context(s): returning proxy org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb
DEBUG 17:22:30 [ConnectionPool ] atomikos connection pool 'jdbc/loaniq/reader': got connection from pool, new size: 14/15
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
INFO 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: calling toString...
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: toString returning org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb
DEBUG 17:22:30 [AbstractDataSourceBean ] AtomikosDataSoureBean 'jdbc/loaniq/reader': returning org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: notifyBeforeUse a SessionHandleState with 1 context(s)
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
DEBUG 17:22:30 [SessionHandleState ] a SessionHandleState with 1 context(s): checking XA context for transaction com.atomikos.icatch.imp.CompositeTransactionImp@6708d6d4
DEBUG 17:22:30 [CoordinatorImp ] Coordinator transactionManager0000100006 entering state: ACTIVE
INFO 17:22:30 [CompositeTransactionImp ] addParticipant ( XAResourceTransaction: 7472616E73616374696F6E4D616E6167657230303030313030303036:7472616E73616374696F6E4D616E6167657231 ) for transaction transactionManager0000100006
DEBUG 17:22:30 [XAResourceTransaction ] XAResourceTransaction: 7472616E73616374696F6E4D616E6167657230303030313030303036:7472616E73616374696F6E4D616E6167657231: about to switch to XAResource org.hsqldb.jdbc.pool.JDBCXAResource@17082d8
DEBUG 17:22:30 [XAResourceTransaction ] XAResourceTransaction transactionManager0000100006transactionManager1: switched to XAResource org.hsqldb.jdbc.pool.JDBCXAResource@17082d8
INFO 17:22:30 [XAResourceTransaction ] XAResource.start ( 7472616E73616374696F6E4D616E6167657230303030313030303036:7472616E73616374696F6E4D616E6167657231 , XAResource.TMNOFLAGS ) on resource jdbc/loaniq/reader represented by XAResource instance org.hsqldb.jdbc.pool.JDBCXAResource@17082d8
DEBUG 17:22:30 [TransactionContext ] a TransactionContext: changing to state com.atomikos.datasource.xa.session.BranchEnlistedStateHandler@19e733e
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: detected transaction com.atomikos.icatch.imp.CompositeTransactionImp@6708d6d4
DEBUG 17:22:30 [CoordinatorImp ] Coordinator transactionManager0000100006 entering state: ACTIVE
INFO 17:22:30 [CompositeTransactionImp ] registerSynchronization ( com.atomikos.jdbc.AtomikosConnectionProxy$JdbcRequeueSynchronization@6708d6d4 ) for transaction transactionManager0000100006
INFO 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: calling prepareStatement...
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: prepareStatement returning org.hsqldb.jdbc.JDBCPreparedStatement@1a0eec3[sql=[
CREATE SCHEMA LSUSER AUTHORIZATION SA
CREATE TABLE "LSUSER"."VLS_CUSTOMER"
(
"CUS_CID_CUST_ID" CHAR(8),
"CUS_XID_CUST_ID" CHAR(15),
"CUS_NME_SHORT_NAME" CHAR(30),
"CUS_NME_FULL_NAME" VARCHAR(140),
"CUS_CDE_COUNTRY" CHAR(2),
"CUS_CDE_CUST_STAT" CHAR(5),
"CUS_IND_INVESTOR" CHAR(1),
"CUS_IND_BORROWER" CHAR(1),
"CUS_IND_GUARANTOR" CHAR(1),
"CUS_IND_BENEFIC" CHAR(1),
"CUS_IND_INTRL_ENT" CHAR(1),
"CUS_IND_RESTRICT" CHAR(1),
"CUS_CDE_BANK" CHAR(5),
"CUS_TSP_REC_CREATE" TIMESTAMP,
"CUS_TSP_REC_UPDATE" TIMESTAMP,
"CUS_UID_REC_CREATE" CHAR(8),
"CUS_UID_REC_UPDATE" CHAR(8),
"CUS_IND_SLG" CHAR(1),
"CUS_IND_MAJ_UNDWRT" CHAR(1),
"CUS_IND_CRA" CHAR(1),
"CUS_CDE_TRS_RPT_AR" CHAR(5),
"CUS_IND_SIMPLIFIED" CHAR(1),
"CUS_CDE_CUST_DESC" CHAR(5),
"CUS_CID_ULT_PARENT" CHAR(8),
"CUS_CDE_DEPT" CHAR(5),
"CUS_CID_IMM_PARENT" CHAR(8),
"CUS_CDE_EXPENSE" CHAR(15),
"CUS_CDE_PRIM_SIC" CHAR(10),
"CUS_CDE_PROSPECT" CHAR(5),
"CUS_CDE_LEGAL" CHAR(5),
"CUS_CDE_SIC_CNTRY" CHAR(2),
"CUS_CDE_BRANCH" CHAR(5),
"CUS_CDE_ORIGIN" CHAR(5),
"CUS_CDE_LANGUAGE" CHAR(5),
"CUS_IND_VAT_SUBJCT" CHAR(1),
"CUS_TXT_VAT_NUMBER" CHAR(15),
"CUS_AMT_OS_LIMIT" DECIMAL(31,3),
"CUS_CDE_OS_LIM_CCY" CHAR(3),
"CUS_IND_OS_LIM_ERL" CHAR(1),
"CUS_CDE_MASTER_ACT" CHAR(5),
"CUS_IND_BROKER" CHAR(1),
"CUS_CDE_DEP_SUBTYP" CHAR(5)
)
]]
INFO 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: isClosed()...
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: isClosed() returning false
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
INFO 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: calling getWarnings...
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: getWarnings returning null
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
INFO 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: calling clearWarnings...
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: clearWarnings returning null
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
INFO 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: close()...
DEBUG 17:22:30 [AbstractConnectionProxy ] Forcing close of pending statement: org.hsqldb.jdbc.JDBCPreparedStatement@1a0eec3[closed]
DEBUG 17:22:30 [SessionHandleState ] a SessionHandleState with 1 context(s): entering notifySessionClosed
DEBUG 17:22:30 [SessionHandleState ] a SessionHandleState with 1 context(s): delegeting session close to a TransactionContext
INFO 17:22:30 [XAResourceTransaction ] XAResource.end ( 7472616E73616374696F6E4D616E6167657230303030313030303036:7472616E73616374696F6E4D616E6167657231 , XAResource.TMSUCCESS ) on resource jdbc/loaniq/reader represented by XAResource instance org.hsqldb.jdbc.pool.JDBCXAResource@17082d8
DEBUG 17:22:30 [TransactionContext ] a TransactionContext: changing state to com.atomikos.datasource.xa.session.BranchEndedStateHandler@b5d05b
DEBUG 17:22:30 [TransactionContext ] a TransactionContext: changing to state com.atomikos.datasource.xa.session.BranchEndedStateHandler@b5d05b
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: closed.
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
INFO 17:22:30 [AbstractDataSourceBean ] AtomikosDataSoureBean 'jdbc/loaniq/reader': getConnection ( null )...
INFO 17:22:30 [AbstractDataSourceBean ] AtomikosDataSoureBean 'jdbc/loaniq/reader': init...
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
DEBUG 17:22:30 [AbstractXPooledConnection ] an AtomikosXAPooledConnection with a SessionHandleState with 1 context(s): updating last time acquired
DEBUG 17:22:30 [AtomikosXAPooledConnection ] an AtomikosXAPooledConnection with a SessionHandleState with 1 context(s): no test query, skipping test
DEBUG 17:22:30 [AtomikosXAPooledConnection ] an AtomikosXAPooledConnection with a SessionHandleState with 1 context(s): creating connection proxy...
DEBUG 17:22:30 [SessionHandleState ] a SessionHandleState with 1 context(s): notifySessionBorrowed
DEBUG 17:22:30 [TransactionContext ] a TransactionContext: changing to state com.atomikos.datasource.xa.session.NotInBranchStateHandler@98a8b8
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
INFO 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: calling toString...
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: toString returning org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb
DEBUG 17:22:30 [AbstractXPooledConnection ] an AtomikosXAPooledConnection with a SessionHandleState with 2 context(s): returning proxy org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb
DEBUG 17:22:30 [ConnectionPool ] atomikos connection pool 'jdbc/loaniq/reader': recycling connection from pool...
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
INFO 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: calling toString...
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: toString returning org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb
DEBUG 17:22:30 [AbstractDataSourceBean ] AtomikosDataSoureBean 'jdbc/loaniq/reader': returning org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
DEBUG 17:22:30 [AtomikosConnectionProxy ] atomikos connection proxy for org.hsqldb.jdbc.pool.JDBCXAConnectionWrapper@14492fb: notifyBeforeUse a SessionHandleState with 2 context(s)
DEBUG 17:22:30 [BaseTransactionManager ] getCompositeTransaction() returning instance with id transactionManager0000100006
DEBUG 17:22:30 [SessionHandleState ] a SessionHandleState with 2 context(s): checking XA context for transaction com.atomikos.icatch.imp.CompositeTransactionImp@6708d6d4
DEBUG 17:22:30 [CoordinatorImp ] Coordinator transactionManager0000100006 entering state: ACTIVE
INFO 17:22:30 [CompositeTransactionImp ] addParticipant ( XAResourceTransaction: 7472616E73616374696F6E4D616E6167657230303030313030303036:7472616E73616374696F6E4D616E6167657231 ) for transaction transactionManager0000100006
DEBUG 17:22:30 [XAResourceTransaction ] XAResourceTransaction: 7472616E73616374696F6E4D616E6167657230303030313030303036:7472616E73616374696F6E4D616E6167657231: about to switch to XAResource org.hsqldb.jdbc.pool.JDBCXAResource@17082d8
DEBUG 17:22:30 [XAResourceTransaction ] XAResourceTransaction transactionManager0000100006transactionManager1: switched to XAResource org.hsqldb.jdbc.pool.JDBCXAResource@17082d8
INFO 17:22:30 [XAResourceTransaction ] XAResource.start ( 7472616E73616374696F6E4D616E6167657230303030313030303036:7472616E73616374696F6E4D616E6167657231 , XAResource.TMJOIN ) on resource jdbc/loaniq/reader represented by XAResource instance org.hsqldb.jdbc.pool.JDBCXAResource@17082d8
WARN 17:22:30 [XAResourceTransaction ] XA resource 'jdbc/loaniq/reader': resume for XID '7472616E73616374696F6E4D616E6167657230303030313030303036:7472616E73616374696F6E4D616E6167657231' raised 0: unknown
javax.transaction.xa.XAException: Invalid XAResource state
at org.hsqldb.jdbc.pool.JDBCXAResource.start(Unknown Source)
at com.atomikos.datasource.xa.XAResourceTransaction.resume(XAResourceTransaction.java:498)
at com.atomikos.datasource.xa.session.BranchEnlistedStateHandler.<init>(BranchEnlistedStateHandler.java:59)
at com.atomikos.datasource.xa.session.NotInBranchStateHandler.checkEnlistBeforeUse(NotInBranchStateHandler.java:65)
at com.atomikos.datasource.xa.session.TransactionContext.checkEnlistBeforeUse(TransactionContext.java:88)
at com.atomikos.datasource.xa.session.SessionHandleState.notifyBeforeUse(SessionHandleState.java:179)
at com.atomikos.jdbc.AtomikosConnectionProxy.enlist(AtomikosConnectionProxy.java:208)
at com.atomikos.jdbc.AtomikosConnectionProxy.invoke(AtomikosConnectionProxy.java:142)
at com.sun.proxy.$Proxy41.prepareStatement(Unknown Source)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:534)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:452)
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1577)
at org.hibernate.loader.Loader.doQuery(Loader.java:696)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
at org.hibernate.loader.Loader.doList(Loader.java:2232)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2129)
at org.hibernate.loader.Loader.list(Loader.java:2124)
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:312)
at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1723)
at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:165)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:175)
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:65)
at com.ing.liqmw.trade.dao.DataStubTest.test(DataStubTest.java:171)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
WARN 17:22:30 [JdbcConnectionProxyHelper ] Error enlisting in transaction - connection might be broken? Please check the logs for more information...
com.atomikos.datasource.ResourceException: XA resource 'jdbc/loaniq/reader': resume for XID '7472616E73616374696F6E4D616E6167657230303030313030303036:7472616E73616374696F6E4D616E6167657231' raised 0: unknown
at com.atomikos.datasource.xa.XAResourceTransaction.resume(XAResourceTransaction.java:505)
at com.atomikos.datasource.xa.session.BranchEnlistedStateHandler.<init>(BranchEnlistedStateHandler.java:59)
at com.atomikos.datasource.xa.session.NotInBranchStateHandler.checkEnlistBeforeUse(NotInBranchStateHandler.java:65)
at com.atomikos.datasource.xa.session.TransactionContext.checkEnlistBeforeUse(TransactionContext.java:88)
at com.atomikos.datasource.xa.session.SessionHandleState.notifyBeforeUse(SessionHandleState.java:179)
at com.atomikos.jdbc.AtomikosConnectionProxy.enlist(AtomikosConnectionProxy.java:208)
at com.atomikos.jdbc.AtomikosConnectionProxy.invoke(AtomikosConnectionProxy.java:142)
at com.sun.proxy.$Proxy41.prepareStatement(Unknown Source)