首先确认JNDI名称是正确的，在控制台测试连接是ok的。但是启动实例就会报错。
[16-9-21 14:15:28:067 CST] 000000a1 WASSession W DatabaseHashMap getConnection SESN0038E: 尝试获取与数据库的连接时出错。
[16-9-21 14:15:28:066 CST] 000000bf WASSessionCor E DatabaseHashMap getDataSource 异常为：
javax.naming.NameNotFoundException: Context: SR12Cell01/clusters/ERP, name: jdbc/Sessions: First component in name Sessions not found. [Root exception is org.omg.CosNaming.NamingContextPackage.NotFound: IDL:omg.org/CosNaming/NamingContext/NotFound:1.0]
at com.ibm.ws.naming.jndicos.CNContextImpl.mapNotFoundException(CNContextImpl.java:4564)
at com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.java:1822)
at com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.java:1777)
at com.ibm.ws.naming.jndicos.CNContextImpl.lookupExt(CNContextImpl.java:1434)
at com.ibm.ws.naming.jndicos.CNContextImpl.lookup(CNContextImpl.java:616)
at com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:165)
at com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:179)
at org.apache.aries.jndi.DelegateContext.lookup(DelegateContext.java:161)
at javax.naming.InitialContext.lookup(InitialContext.java:423)
at com.ibm.ws.session.store.db.DatabaseHashMap.getDataSource(DatabaseHashMap.java:657)
at com.ibm.ws.session.store.db.DatabaseHashMap.getConnection(DatabaseHashMap.java:1160)
at com.ibm.ws.session.store.db.DatabaseHashMap.performInvalidation(DatabaseHashMap.java:2761)
at com.ibm.ws.session.store.common.BackedStore.runInvalidation(BackedStore.java:133)
at com.ibm.ws.session.WsSessionInvalidatorWithThreadPool$InvalidationTask.run(WsSessionInvalidatorWithThreadPool.java:87)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:483)
at java.util.concurrent.FutureTask.run(FutureTask.java:274)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:190)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1157)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:627)
at java.lang.Thread.run(Thread.java:801)
Caused by: org.omg.CosNaming.NamingContextPackage.NotFound: IDL:omg.org/CosNaming/NamingContext/NotFound:1.0
at com.ibm.ws.naming.ipcos.WsnOptimizedNamingImpl.do_resolve_complete_info(WsnOptimizedNamingImpl.java:590)
at com.ibm.ws.naming.cosbase.WsnOptimizedNamingImplBase.resolve_complete_info(WsnOptimizedNamingImplBase.java:2216)
at com.ibm.WsnOptimizedNaming._NamingContextStub.resolve_complete_info(_NamingContextStub.java:538)
at com.ibm.ws.naming.jndicos.CNContextImpl$2.run(CNContextImpl.java:2958)
at com.ibm.ws.naming.jndicos.CNContextImpl$2.run(CNContextImpl.java:2954)
at com.ibm.ws.naming.util.CommonHelpers.retry(CommonHelpers.java:871)
at com.ibm.ws.naming.jndicos.CNContextImpl.cosResolve(CNContextImpl.java:2952)
at com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.java:1818)
... 19 more
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