在使用EAS8.0版本时，一个人怎么使用都没有问题，但是有第二个人或多人操作时，马上就会出现下面的连接异常的提示，请问各位有没有遇到过这问题的？
错误信息：com.kingdee.bos.BOSException: null
Caused exception message is: java.sql.SQLException: Server Component wrap a Throwable. Exception Type is [javax.ejb.EJBException]
Caused exception message is: Unexpected system failure, see server log for details.
错误详细堆栈信息：java.lang.RuntimeException: com.kingdee.bos.BOSException: null
Caused exception message is: java.sql.SQLException: Server Component wrap a Throwable. Exception Type is [javax.ejb.EJBException]
Caused exception message is: Unexpected system failure, see server log for details.
at: com.kingdee.eas.framework.client.ListUI.fillFirstData(ListUI.java:2941)
at: com.kingdee.eas.framework.client.ListUI.getDataFirsetTime(ListUI.java:2804)
at: com.kingdee.eas.framework.client.ListUI.tblMain_doRequestRowSetForHasQueryPK(ListUI.java:2688)
at: com.kingdee.eas.framework.client.ListUI.tblMain_doRequestRowSet(ListUI.java:2576)
at: com.kingdee.eas.framework.client.AbstractListUI$2.doRequestRowSet(AbstractListUI.java:332)
at: com.kingdee.bos.ctrl.kdf.data.impl.DataSetWrapperFactory.fireRequestRowSet(DataSetWrapperFactory.java:257)
at: com.kingdee.bos.ctrl.kdf.data.impl.DataSetWrapperFactory.requestData(DataSetWrapperFactory.java:233)
at: com.kingdee.bos.ctrl.kdf.table.KDTDataRequestManager.requestData(KDTDataRequestManager.java:536)
at: com.kingdee.bos.ctrl.kdf.table.KDTDataRequestManager.doDataRequestPage(KDTDataRequestManager.java:465)
at: com.kingdee.bos.ctrl.kdf.table.KDTDataRequestManager.doDataRequest2(KDTDataRequestManager.java:370)
at: com.kingdee.bos.ctrl.kdf.table.KDTDataRequestManager.doDataRequest(KDTDataRequestManager.java:288)
at: com.kingdee.bos.ctrl.kdf.table.KDTBody.getRow(KDTBody.java:145)
at: com.kingdee.bos.ctrl.kdf.table.KDTBody.getRowHeight(KDTBody.java:166)
at: com.kingdee.bos.ctrl.kdf.table.KDTVertical.calculateLast(KDTVertical.java:499)
at: com.kingdee.bos.ctrl.kdf.table.KDTVertical.refresh(KDTVertical.java:470)
at: com.kingdee.bos.ctrl.kdf.table.KDTLayoutInfo.setFirst(KDTLayoutInfo.java:211)
at: com.kingdee.bos.ctrl.kdf.table.KDTLayoutInfo.invalidate(KDTLayoutInfo.java:245)
at: com.kingdee.bos.ctrl.kdf.table.KDTLayoutManager.invalidateVertical(KDTLayoutManager.java:192)
at: com.kingdee.bos.ctrl.kdf.table.KDTable.removeRows(KDTable.java:4323)
at: com.kingdee.bos.ctrl.kdf.table.KDTable.removeRows(KDTable.java:4295)
at: com.kingdee.eas.framework.client.ListUI.execQuery(ListUI.java:701)
at: com.kingdee.eas.basedata.master.account.client.F7AccountViewUI.execQuery(F7AccountViewUI.java:491)
at: com.kingdee.eas.framework.client.TreeDetailListUI.treeMain_valueChanged(TreeDetailListUI.java:175)
at: com.kingdee.eas.framework.client.AbstractTreeDetailListUI$2.valueChanged(AbstractTreeDetailListUI.java:205)
at: javax.swing.JTree.fireValueChanged(JTree.java:2820)
at: javax.swing.JTree$TreeSelectionRedirector.valueChanged(JTree.java:3191)
at: javax.swing.tree.DefaultTreeSelectionModel.fireValueChanged(DefaultTreeSelectionModel.java:629)
at: javax.swing.tree.DefaultTreeSelectionModel.notifyPathChange(DefaultTreeSelectionModel.java:1078)
at: javax.swing.tree.DefaultTreeSelectionModel.setSelectionPaths(DefaultTreeSelectionModel.java:287)
at: javax.swing.tree.DefaultTreeSelectionModel.setSelectionPath(DefaultTreeSelectionModel.java:170)
at: javax.swing.JTree.setSelectionPath(JTree.java:1598)
at: javax.swing.plaf.basic.BasicTreeUI.selectPathForEvent(BasicTreeUI.java:2311)
at: com.kingdee.bos.ctrl.swing.plaf.KingdeeTreeUI.selectPathForEvent(KingdeeTreeUI.java:103)
at: javax.swing.plaf.basic.BasicTreeUI$Handler.handleSelection(BasicTreeUI.java:3520)
at: javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressed(BasicTreeUI.java:3459)
at: java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
at: java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
at: java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
at: java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
at: java.awt.Component.processMouseEvent(Component.java:6285)
at: javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at: java.awt.Component.processEvent(Component.java:6053)
at: java.awt.Container.processEvent(Container.java:2041)
at: java.awt.Component.dispatchEventImpl(Component.java:4651)
at: java.awt.Container.dispatchEventImpl(Container.java:2099)
at: java.awt.Component.dispatchEvent(Component.java:4481)
at: java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
at: java.awt.LightweightDispatcher.processMouseEvent(Container.java:4235)
at: java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at: java.awt.Container.dispatchEventImpl(Container.java:2085)
at: java.awt.Window.dispatchEventImpl(Window.java:2478)
at: java.awt.Component.dispatchEvent(Component.java:4481)
at: java.awt.EventQueue.dispatchEventImpl(EventQueue.java:643)
at: java.awt.EventQueue.access$000(EventQueue.java:84)
at: java.awt.EventQueue$1.run(EventQueue.java:602)
at: java.awt.EventQueue$1.run(EventQueue.java:600)
at: java.security.AccessController.doPrivileged(Native Method)
at: java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at: java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at: java.awt.EventQueue$2.run(EventQueue.java:616)
at: java.awt.EventQueue$2.run(EventQueue.java:614)
at: java.security.AccessController.doPrivileged(Native Method)
at: java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at: java.awt.EventQueue.dispatchEvent(EventQueue.java:613)
at: com.kingdee.bos.invokecounter.RPCLogEventQueue.dispatchEvent(RPCLogEventQueue.java:176)
at: sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
at: sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at: java.lang.reflect.Method.invoke(Method.java:597)
at: com.kingdee.eas.client.recorder.UserInputEventQueue.myDispatchEvent(UserInputEventQueue.java:126)
at: com.kingdee.eas.client.recorder.UserInputEventQueue.dispatchEvent(UserInputEventQueue.java:59)
at: java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at: java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at: java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178)
at: java.awt.Dialog$1.run(Dialog.java:1046)
at: java.awt.Dialog$3.run(Dialog.java:1098)
at: java.security.AccessController.doPrivileged(Native Method)
at: java.awt.Dialog.show(Dialog.java:1096)
at: com.kingdee.bos.ctrl.swing.KDDialog.show(KDDialog.java:186)
at: com.kingdee.eas.base.uiframe.client.UIModelDialog.show(UIModelDialog.java:120)
at: com.kingdee.eas.basedata.master.account.client.AccountPromptBox.show(AccountPromptBox.java:291)
at: com.kingdee.eas.basedata.master.account.AccountViewParser.mainDataStrToValueImp(AccountViewParser.java:118)
at: com.kingdee.eas.basedata.master.account.AccountViewParser.stringToValue(AccountViewParser.java:102)
at: com.kingdee.bos.ctrl.extendcontrols.KDBizPromptBox.stringToValue(KDBizPromptBox.java:982)
at: com.kingdee.bos.ctrl.extendcontrols.KDBizPromptBox.commitEditImmediately(KDBizPromptBox.java:2831)
at: com.kingdee.bos.ctrl.extendcontrols.KDBizPromptBox.commitEdit(KDBizPromptBox.java:2790)
at: com.kingdee.bos.ctrl.extendcontrols.KDPromptEditorAssistor$AssistorHandler.keyPressed(KDPromptEditorAssistor.java:2091)
at: java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:233)
at: java.awt.Component.processKeyEvent(Component.java:6246)
at: javax.swing.JComponent.processKeyEvent(JComponent.java:2801)
at: java.awt.Component.processEvent(Component.java:6065)
at: java.awt.Container.processEvent(Container.java:2041)
at: java.awt.Component.dispatchEventImpl(Component.java:4651)
at: java.awt.Container.dispatchEventImpl(Container.java:2099)
at: java.awt.Component.dispatchEvent(Component.java:4481)
at: java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1850)
at: java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:712)
at: java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:990)
at: java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:855)
at: java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:676)
at: java.awt.Component.dispatchEventImpl(Component.java:4523)
at: java.awt.Container.dispatchEventImpl(Container.java:2099)
at: java.awt.Window.dispatchEventImpl(Window.java:2478)
at: java.awt.Component.dispatchEvent(Component.java:4481)
at: java.awt.EventQueue.dispatchEventImpl(EventQueue.java:643)
at: java.awt.EventQueue.access$000(EventQueue.java:84)
at: java.awt.EventQueue$1.run(EventQueue.java:602)
at: java.awt.EventQueue$1.run(EventQueue.java:600)
at: java.security.AccessController.doPrivileged(Native Method)
at: java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at: java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at: java.awt.EventQueue$2.run(EventQueue.java:616)
at: java.awt.EventQueue$2.run(EventQueue.java:614)
at: java.security.AccessController.doPrivileged(Native Method)
at: java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at: java.awt.EventQueue.dispatchEvent(EventQueue.java:613)
at: com.kingdee.bos.invokecounter.RPCLogEventQueue.dispatchEvent(RPCLogEventQueue.java:176)
at: sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
at: sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at: java.lang.reflect.Method.invoke(Method.java:597)
at: com.kingdee.eas.client.recorder.UserInputEventQueue.myDispatchEvent(UserInputEventQueue.java:126)
at: com.kingdee.eas.client.recorder.UserInputEventQueue.dispatchEvent(UserInputEventQueue.java:59)
at: java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at: java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at: java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at: java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at: java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at: java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
com.kingdee.bos.BOSException: null
Caused exception message is: java.sql.SQLException: Server Component wrap a Throwable. Exception Type is [javax.ejb.EJBException]
Caused exception message is: Unexpected system failure, see server log for details.
at: com.kingdee.bos.dao.query.server.DbSeqTableAcuquire.acquire(DbSeqTableAcuquire.java:148)
at: com.kingdee.bos.dao.query.server.SeqTableManager.acquire(SeqTableManager.java:115)
at: com.kingdee.bos.dao.query.server.VirtualModeDataAccess.innerOpenQuery(VirtualModeDataAccess.java:273)
at: com.kingdee.bos.dao.query.server.VirtualModeDataAccess.doAllQueryTask(VirtualModeDataAccess.java:1802)
at: rpc_generate._PROXY_com_1_kingdee_1_bos_1_dao_1_query_1_server_1_IVirtualModeDataAccess.pi11(Unknown Source)
at: rpc_generate._PROXY_com_1_kingdee_1_bos_1_dao_1_query_1_server_1_IVirtualModeDataAccess.processInvoke(Unknown Source)
at: com.kingdee.bos.rpc.impl.ObjectProxy.processInvoke(ObjectProxy.java:177)
at: com.kingdee.bos.rpc.impl.RPCService.serviceCreateObjectAndInvoke(RPCService.java:611)
at: com.kingdee.bos.rpc.impl.RPCService.service(RPCService.java:122)
at: com.kingdee.bos.rpc.impl.ServiceDispatcher.run(ServiceDispatcher.java:153)
at: com.kingdee.bos.rpc.impl.ThreadJob.run(ThreadJob.java:27)
at: com.kingdee.bos.rpc.impl.ThreadPool2$Worker.run(ThreadPool2.java:140)
java.lang.Exception: java.sql.SQLException: Server Component wrap a Throwable. Exception Type is [javax.ejb.EJBException]
Caused exception message is: Unexpected system failure, see server log for details.
at: com.kingdee.bos.db.TableManager.createTable(TableManager.java:847)
at: com.kingdee.bos.db.TempTablePool.createTable(TempTablePool.java:782)
at: com.kingdee.bos.db.TempTablePool.createTempTable(TempTablePool.java:614)
at: com.kingdee.bos.dao.query.server.DbSeqTableAcuquire.acquireTable(DbSeqTableAcuquire.java:286)
at: com.kingdee.bos.dao.query.server.DbSeqTableAcuquire.acquire(DbSeqTableAcuquire.java:84)
at: com.kingdee.bos.dao.query.server.SeqTableManager.acquire(SeqTableManager.java:115)
at: com.kingdee.bos.dao.query.server.VirtualModeDataAccess.innerOpenQuery(VirtualModeDataAccess.java:273)
at: com.kingdee.bos.dao.query.server.VirtualModeDataAccess.doAllQueryTask(VirtualModeDataAccess.java:1802)
at: rpc_generate._PROXY_com_1_kingdee_1_bos_1_dao_1_query_1_server_1_IVirtualModeDataAccess.pi11(Unknown Source)
at: rpc_generate._PROXY_com_1_kingdee_1_bos_1_dao_1_query_1_server_1_IVirtualModeDataAccess.processInvoke(Unknown Source)
at: com.kingdee.bos.rpc.impl.ObjectProxy.processInvoke(ObjectProxy.java:177)
at: com.kingdee.bos.rpc.impl.RPCService.serviceCreateObjectAndInvoke(RPCService.java:611)
at: com.kingdee.bos.rpc.impl.RPCService.service(RPCService.java:122)
at: com.kingdee.bos.rpc.impl.ServiceDispatcher.run(ServiceDispatcher.java:153)
at: com.kingdee.bos.rpc.impl.ThreadJob.run(ThreadJob.java:27)
at: com.kingdee.bos.rpc.impl.ThreadPool2$Worker.run(ThreadPool2.java:140)
java.sql.SQLException: Server Component wrap a Throwable. Exception Type is [javax.ejb.EJBException]
Caused exception message is: Unexpected system failure, see server log for details.
at: com.kingdee.bos.db.TableManager.executeSQL(TableManager.java:1086)
at: com.kingdee.bos.db.TableManager.createTable(TableManager.java:844)
at: com.kingdee.bos.db.TempTablePool.createTable(TempTablePool.java:782)
at: com.kingdee.bos.db.TempTablePool.createTempTable(TempTablePool.java:614)
at: com.kingdee.bos.dao.query.server.DbSeqTableAcuquire.acquireTable(DbSeqTableAcuquire.java:286)
at: com.kingdee.bos.dao.query.server.DbSeqTableAcuquire.acquire(DbSeqTableAcuquire.java:84)
at: com.kingdee.bos.dao.query.server.SeqTableManager.acquire(SeqTableManager.java:115)
at: com.kingdee.bos.dao.query.server.VirtualModeDataAccess.innerOpenQuery(VirtualModeDataAccess.java:273)
at: com.kingdee.bos.dao.query.server.VirtualModeDataAccess.doAllQueryTask(VirtualModeDataAccess.java:1802)
at: rpc_generate._PROXY_com_1_kingdee_1_bos_1_dao_1_query_1_server_1_IVirtualModeDataAccess.pi11(Unknown Source)
at: rpc_generate._PROXY_com_1_kingdee_1_bos_1_dao_1_query_1_server_1_IVirtualModeDataAccess.processInvoke(Unknown Source)
at: com.kingdee.bos.rpc.impl.ObjectProxy.processInvoke(ObjectProxy.java:177)
at: com.kingdee.bos.rpc.impl.RPCService.serviceCreateObjectAndInvoke(RPCService.java:611)
at: com.kingdee.bos.rpc.impl.RPCService.service(RPCService.java:122)
at: com.kingdee.bos.rpc.impl.ServiceDispatcher.run(ServiceDispatcher.java:153)
at: com.kingdee.bos.rpc.impl.ThreadJob.run(ThreadJob.java:27)
at: com.kingdee.bos.rpc.impl.ThreadPool2$Worker.run(ThreadPool2.java:140)
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