Crystal reports 检测到异常：意外的数据库连接器错误

我正在用crystal reports做JavaEE应用程序。我有不同的数据源要登录。当我连接在设计时连接的特定数据源时，我的报告工作正常，但切换到其他数据源时出现以下错误

"http-bio-8080"-exec-5 JRCCommunicationAdapter ERROR -  detected an exception: Unexpected database connector error
    at com.crystaldecisions.reports.datafoundation.DFQuery.for(SourceFile:632)
    at com.crystaldecisions.reports.datalayer.a.do(SourceFile:1621)
    at com.crystaldecisions.reports.datalayer.a.a(SourceFile:1404)
    at com.crystaldecisions.reports.dataengine.m.b(SourceFile:334)
    at com.crystaldecisions.reports.dataengine.j.b(SourceFile:515)
    at com.crystaldecisions.reports.dataengine.m.o(SourceFile:408)
    at com.crystaldecisions.reports.dataengine.m.a(SourceFile:173)
    at com.crystaldecisions.reports.dataengine.ContextNode.a(SourceFile:114)
    at com.crystaldecisions.reports.dataengine.ContextNode.a(SourceFile:95)
    at com.crystaldecisions.reports.dataengine.j.case(SourceFile:1080)
    at com.crystaldecisions.reports.dataengine.h.<init>(SourceFile:108)
    at com.crystaldecisions.reports.dataengine.DataContext.a(SourceFile:254)
    at com.crystaldecisions.reports.dataengine.DataProcessor2.a(SourceFile:4660)
    at com.crystaldecisions.reports.dataengine.DataProcessor2.a(SourceFile:4574)
    at com.crystaldecisions.reports.dataengine.DataProcessor2.new(SourceFile:2652)
    at com.crystaldecisions.reports.dataengine.DataProcessor2.byte(SourceFile:2610)
    at com.crystaldecisions.reports.dataengine.DataProcessor2.try(SourceFile:2282)
    at com.crystaldecisions.reports.dataengine.DataProcessor2.int(SourceFile:2442)
    at com.crystaldecisions.reports.dataengine.DataProcessor2.I(SourceFile:1013)
    at com.crystaldecisions.reports.formatter.formatter.objectformatter.ObjectFormatter.fo(SourceFile:526)
    at com.crystaldecisions.reports.formatter.formatter.paginator.PageFormatter.if(SourceFile:613)
    at com.crystaldecisions.reports.formatter.formatter.paginator.PageFormatter.a(SourceFile:578)
    at com.crystaldecisions.reports.formatter.formatter.paginator.PageFormatter.X(SourceFile:387)
    at com.crystaldecisions.reports.formatter.formatter.paginator.PageFormatter.moveToPageN(SourceFile:339)
    at com.businessobjects.reports.sdk.requesthandler.ReportViewingRequestHandler.a(SourceFile:1090)
    at com.businessobjects.reports.sdk.requesthandler.ReportViewingRequestHandler.byte(SourceFile:218)
    at com.businessobjects.reports.sdk.JRCCommunicationAdapter.do(SourceFile:1909)
    at com.businessobjects.reports.sdk.JRCCommunicationAdapter.if(SourceFile:661)
    at com.businessobjects.reports.sdk.JRCCommunicationAdapter.a(SourceFile:167)
    at com.businessobjects.reports.sdk.JRCCommunicationAdapter$2.a(SourceFile:529)
    at com.businessobjects.reports.sdk.JRCCommunicationAdapter$2.call(SourceFile:527)
    at com.crystaldecisions.reports.common.ThreadGuard.syncExecute(SourceFile:102)
    at com.businessobjects.reports.sdk.JRCCommunicationAdapter.for(SourceFile:525)
    at com.businessobjects.reports.sdk.JRCCommunicationAdapter.int(SourceFile:424)
    at com.businessobjects.reports.sdk.JRCCommunicationAdapter.request(SourceFile:352)
    at com.businessobjects.sdk.erom.jrc.a.a(SourceFile:54)
    at com.businessobjects.sdk.erom.jrc.a.execute(SourceFile:67)
    at com.crystaldecisions.proxy.remoteagent.RemoteAgent$a.execute(SourceFile:716)
    at com.crystaldecisions.proxy.remoteagent.CommunicationChannel.a(SourceFile:125)
    at com.crystaldecisions.proxy.remoteagent.RemoteAgent.a(SourceFile:537)
    at com.crystaldecisions.sdk.occa.report.application.ds.a(SourceFile:186)
    at com.crystaldecisions.sdk.occa.report.application.ReportSource.a(SourceFile:1558)
    at com.crystaldecisions.sdk.occa.report.application.ReportSource.getPage(SourceFile:767)
    at com.crystaldecisions.sdk.occa.report.application.AdvancedReportSource.getPage(SourceFile:324)
    at com.businessobjects.report.web.event.s.a(SourceFile:158)
    at com.businessobjects.report.web.event.s.a(SourceFile:127)
    at com.businessobjects.report.web.event.bt.a(SourceFile:47)
    at com.businessobjects.report.web.a.e.a(SourceFile:396)
    at com.businessobjects.report.web.a.t.a(SourceFile:1726)
    at com.businessobjects.report.web.event.bw.broadcast(SourceFile:97)
    at com.businessobjects.report.web.event.am.a(SourceFile:53)
    at com.businessobjects.report.web.a.t.if(SourceFile:2104)
    at com.businessobjects.report.web.e.a(SourceFile:300)
    at com.businessobjects.report.web.e.a(SourceFile:202)
    at com.businessobjects.report.web.e.a(SourceFile:135)
    at com.crystaldecisions.report.web.ServerControl.a(SourceFile:607)
    at com.crystaldecisions.report.web.ServerControl.processHttpRequest(SourceFile:342)
    at org.apache.jsp.jsp.FPIPPlanDetails_jsp._jspService(FPIPPlanDetails_jsp.java:183)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:368)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:112)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:177)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:169)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

“http-bio-8080”-exec-5 JRCCommunicationAdapter错误-检测到异常：意外的数据库连接器错误
位于com.crystaldecisions.reports.datafoundation.DFQuery.for（源文件：632）
在com.crystaldecisions.reports.datalayer.a.do（源文件：1621）
在com.crystaldecisions.reports.datalayer.a.a（源文件：1404）
在com.crystaldecisions.reports.dataengine.m.b（源文件：334）
在com.crystaldecisions.reports.dataengine.j.b（源文件：515）
在com.crystaldecisions.reports.dataengine.m.o（源文件：408）
在com.crystaldecisions.reports.dataengine.m.a（源文件：173）
在com.crystaldecisions.reports.dataengine.ContextNode.a（源文件：114）上
在com.crystaldecisions.reports.dataengine.ContextNode.a（源文件：95）
com.crystaldecisions.reports.dataengine.j.case（源文件：1080）
在com.crystaldecisions.reports.dataengine.h.（源文件：108）
在com.crystaldecisions.reports.dataengine.DataContext.a（源文件：254）
在com.crystaldecisions.reports.dataengine.DataProcessor2.a（源文件：4660）
在com.crystaldecisions.reports.dataengine.DataProcessor2.a（源文件：4574）
在com.crystaldecisions.reports.dataengine.DataProcessor2.new（源文件：2652）
位于com.crystaldecisions.reports.dataengine.DataProcessor2.byte（源文件：2610）
在com.crystaldecisions.reports.dataengine.DataProcessor2.try（源文件：2282）
在com.crystaldecisions.reports.dataengine.DataProcessor2.int（源文件：2442）
在com.crystaldecisions.reports.dataengine.DataProcessor2.I（源文件：1013）
位于com.crystaldecisions.reports.formatter.formatter.objectformatter.objectformatter.fo（源文件：526）
在com.crystaldecisions.reports.formatter.formatter.paginator.PageFormatter.if（源文件：613）上
在com.crystaldecisions.reports.formatter.formatter.paginator.PageFormatter.a（源文件：578）
在com.crystaldecisions.reports.formatter.formatter.paginator.PageFormatter.X（源文件：387）
在com.crystaldecisions.reports.formatter.formatter.paginator.PageFormatter.moveToPageN（源文件：339）
在com.businessobjects.reports.sdk.requesthandler.ReportViewingRequestHandler.a（源文件：1090）
位于com.businessobjects.reports.sdk.requesthandler.ReportViewingRequestHandler.byte（源文件：218）
位于com.businessobjects.reports.sdk.JRCCommunicationAdapter.do（源文件：1909）
位于com.businessobjects.reports.sdk.JRCCommunicationAdapter.if（源文件：661）
位于com.businessobjects.reports.sdk.JRCCommunicationAdapter.a（源文件：167）
位于com.businessobjects.reports.sdk.JRCCommunicationAdapter$2.a（源文件：529）
位于com.businessobjects.reports.sdk.JRCCommunicationAdapter$2.call（源文件：527）
位于com.crystaldecisions.reports.common.ThreadGuard.syncExecute（源文件：102）
位于com.businessobjects.reports.sdk.JRCCommunicationAdapter.for（源文件：525）
位于com.businessobjects.reports.sdk.JRCCommunicationAdapter.int（源文件：424）
位于com.businessobjects.reports.sdk.JRCCommunicationAdapter.request（源文件：352）
位于com.businessobjects.sdk.erom.jrc.a.a（源文件：54）
位于com.businessobjects.sdk.erom.jrc.a.execute（源文件：67）
位于com.crystaldecisions.proxy.remoteagent.remoteagent$a.execute（源文件：716）
在com.crystaldecisions.proxy.remoteagent.CommunicationChannel.a（源文件：125）
位于com.crystaldecisions.proxy.remoteagent.remoteagent.a（源文件：537）
在com.crystaldecisions.sdk.occa.report.application.ds.a（源文件：186）
在com.crystaldecisions.sdk.occa.report.application.ReportSource.a（源文件：1558）上
在com.crystaldecisions.sdk.occa.report.application.ReportSource.getPage上（源文件：767）
在com.crystaldecisions.sdk.occa.report.application.AdvancedReportSource.getPage（源文件：324）上
位于com.businessobjects.report.web.event.s.a（源文件：158）
位于com.businessobjects.report.web.event.s.a（源文件：127）
位于com.businessobjects.report.web.event.bt.a（源文件：47）
访问com.businessobjects.report.web.a.e.a（源文件：396）
访问com.businessobjects.report.web.a.t.a（源文件：1726）
在com.businessobjects.report.web.event.bw.broadcast（源文件：97）上
位于com.businessobjects.report.web.event.am.a（源文件：53）
访问com.businessobjects.report.web.a.t.if（源文件：2104）
位于com.businessobjects.report.web.e.a（源文件：300）
位于com.businessobjects.report.web.e.a（源文件：202）
位于com.businessobjects.report.web.e.a（源文件：135）
位于com.crystaldecisions.report.web.ServerControl.a（源文件：607）
在com.crystaldecisions.report.web.ServerControl.processHttpRequest（源文件：342）上
位于org.apache.jsp.jsp.FPIPPlanDetails\u jsp.\u jsp服务（FPIPPlanDetails\u jsp.java:183）
位于org.apache.jasper.runtime.HttpJspBase.service（HttpJspBase.java:70）
位于javax.servlet.http.HttpServlet.service（HttpServlet.java:722）
位于org.apache.jasper.servlet.JspServletWrapper.service（JspServletWrapper.java:419）
位于org.apache.jasper.servlet.JspServlet.serviceJspFile（JspServlet.java:391）
位于org.apache.jasper.servlet.JspServlet.service（JspServlet.java:334）
位于javax.servlet.http.HttpServlet.service（HttpServlet.java:722）
位于org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:304）
位于org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:210）
位于org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter（FilterChainProxy.java:368）
位于org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke（FilterSecurityInterceptor.java:109）
位于org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter（FilterSecuri