Description of problem:
Customer wants to capture resource utilization reports but no data is visible.
Jasperserver log file has the following error :

2014-08-02 13:01:30,728 ERROR GenericExceptionMapper,ajp-/127.0.0.1:8702-16:42 - Unexpected error occurs
com.jaspersoft.jasperserver.api.JSExceptionWrapper:
net.sf.jasperreports.engine.JRException: Error executing SQL statement for : startDate
        at net.sf.jasperreports.engine.query.JRJdbcQueryExecuter.createDatasource(JRJdbcQueryExecuter.java:240)
        at com.jaspersoft.jasperserver.api.engine.jasperreports.util.JRTimezoneJdbcQueryExecuter.createDatasource(JRTimezoneJdbcQueryExecuter.java:168)
        at com.jaspersoft.commons.util.JSControlledJdbcQueryExecuter.createDatasource(JSControlledJdbcQueryExecuter.java:113)
        at com.jaspersoft.jasperserver.api.engine.jasperreports.util.JRQueryExecuterAdapter.executeQuery(JRQueryExecuterAdapter.java:94)
        at com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.executeQuery(EngineServiceImpl.java:2129)
        at sun.reflect.GeneratedMethodAccessor797.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
        at com.sun.proxy.$Proxy143.executeQuery(Unknown Source)
        at com.jaspersoft.jasperserver.war.cascade.CachedEngineService.executeQuery(CachedEngineService.java:111)
        at com.jaspersoft.jasperserver.war.cascade.handlers.QueryValuesLoader.loadValues(QueryValuesLoader.java:85)
        at com.jaspersoft.jasperserver.war.cascade.handlers.SingleSelectListInputControlHandler.fillStateValue(SingleSelectListInputControlHandler.java:117)
        at com.jaspersoft.jasperserver.war.cascade.handlers.BasicInputControlHandler.getState(BasicInputControlHandler.java:128)
        at com.jaspersoft.ji.war.action.cascade.BaseDashboardInputControlLogic.getValuesForInputControls(BaseDashboardInputControlLogic.java:84)
        at com.jaspersoft.ji.war.action.cascade.BaseDashboardInputControlLogic.getValuesForInputControls(BaseDashboardInputControlLogic.java:38)
        at com.jaspersoft.jasperserver.war.cascade.GenericInputControlLogic.getValuesForInputControlsFromRawData(GenericInputControlLogic.java:240)
        at com.jaspersoft.jasperserver.war.cascade.GenericInputControlLogic.getValuesForInputControlsFromRawData(GenericInputControlLogic.java:459)
        at com.jaspersoft.jasperserver.war.cascade.InputControlsLogicServiceImpl$4.callByContainerUri(InputControlsLogicServiceImpl.java:168)
        at com.jaspersoft.jasperserver.war.cascade.InputControlsLogicServiceImpl$4.callByContainerUri(InputControlsLogicServiceImpl.java:165)
        at com.jaspersoft.jasperserver.war.cascade.InputControlsLogicServiceImpl.callControlLogic(InputControlsLogicServiceImpl.java:215)
        at com.jaspersoft.jasperserver.war.cascade.InputControlsLogicServiceImpl.getValuesForInputControls(InputControlsLogicServiceImpl.java:165)
        at com.jaspersoft.jasperserver.jaxrs.report.InputControlsJaxrsService$4.call(InputControlsJaxrsService.java:262)
        at com.jaspersoft.jasperserver.jaxrs.report.InputControlsJaxrsService$4.call(InputControlsJaxrsService.java:258)
        at com.jaspersoft.jasperserver.jaxrs.report.ReportsServiceCallTemplate.callRemoteService(ReportsServiceCallTemplate.java:50)
        at com.jaspersoft.jasperserver.remote.common.RemoteServiceWrapper.callRemoteService(RemoteServiceWrapper.java:44)
        at com.jaspersoft.jasperserver.jaxrs.report.InputControlsJaxrsService.internalGetInputControlValues(InputControlsJaxrsService.java:258)
        at com.jaspersoft.jasperserver.jaxrs.report.InputControlsJaxrsService.getReportInputControlValuesViaPost(InputControlsJaxrsService.java:240)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
        at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)
        at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
        at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
        at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
        at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
        at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
        at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
        at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1483)
        at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1414)
        at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1363)
        at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1353)
        at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:414)
        at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
        at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
        at com.jaspersoft.jasperserver.war.StaticFilesCacheControlFilter.doFilter(StaticFilesCacheControlFilter.java:137)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:399)
        at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
        at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at org.springframework.security.providers.anonymous.AnonymousProcessingFilter.doFilterHttp(AnonymousProcessingFilter.java:105)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at com.jaspersoft.jasperserver.api.metadata.user.service.impl.MetadataAuthenticationProcessingFilter.doFilter(MetadataAuthenticationProcessingFilter.java:152)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at com.jaspersoft.jasperserver.war.util.RequestParameterAuthenticationFilter.doFilter(RequestParameterAuthenticationFilter.java:94)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at com.jaspersoft.jasperserver.multipleTenancy.MTBasicProcessingFilter.doFilterHttp(MTBasicProcessingFilter.java:179)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at com.jaspersoft.jasperserver.war.UserPreferencesFilter.doFilter(UserPreferencesFilter.java:209)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:278)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at com.jaspersoft.jasperserver.war.UserPreferencesFilter.doFilter(UserPreferencesFilter.java:209)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at com.jaspersoft.jasperserver.api.logging.filter.BasicLoggingFilter.doFilter(BasicLoggingFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at com.jaspersoft.jasperserver.api.security.JSCsrfGuardFilter.doFilter(JSCsrfGuardFilter.java:83)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at com.jaspersoft.jasperserver.api.security.WebAppSecurityFilter.doFilter(WebAppSecurityFilter.java:76)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at com.jaspersoft.jasperserver.api.security.encryption.EncryptionFilter.doFilter(EncryptionFilter.java:130)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235)
        at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
        at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
        at org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:188)
        at org.springframework.security.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:99)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
        at org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:104)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
        at com.jaspersoft.jasperserver.war.util.SessionDecoratorFilter.doFilter(SessionDecoratorFilter.java:43)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
        at com.jaspersoft.jasperserver.war.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:67)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
        at com.jaspersoft.jasperserver.war.P3PFilter.doFilter(P3PFilter.java:43)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:499)
        at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:145)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97)
        at org.jboss.web.rewrite.RewriteValve.invoke(RewriteValve.java:466)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:336)
        at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:488)
        at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:420)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:920)
        at java.lang.Thread.run(Thread.java:744)
Caused by: org.postgresql.util.PSQLException: ERROR: operator does not exist: character varying = integer
  Hint: No operator matches the given name and argument type(s). You might need to add explicit type casts.
  Position: 380
        at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2101)
        at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1834)
        at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255)
        at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:510)
        at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:386)
        at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:271)
        at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:92)
        at net.sf.jasperreports.engine.query.JRJdbcQueryExecuter.createDatasource(JRJdbcQueryExecuter.java:233)
        ... 129 more