我使用Oracle REST数据服务（ORDS）运行Tomcat 7服务器，使用Oracle 12c运行Oracle APEX 5。 在数据库中，包含JSON_API的包具有不同的过程，可通过Tomcat和带有URL http://hostname/apex/schema.json_api.proc的Oracle APEX访问。一个客户端应用程序使用GET方法请求数据，有时在Tomcat的Catalina日志文件中发生神秘错误：
PM oracle.dbtools.http.errors.ErrorPageFilter log SEVERE： java.sql.SQLException：ORA-01460：未实现或不合理 要求转换
客户端因响应而收到HTTP 500错误。
我已经在网上搜索了原因，但却找不到任何可能的情况。 （没有超过4000字节的字符串转换等。）似乎错误发生在过程schema.json_api.proc开始之前。几分钟之后奇怪的相同请求成功。我倾向于认为Tomcat之间的通信存在一些问题 - ＆gt; ORDS - ＆gt; APEX - ＆gt;数据库。
那么，有没有人有任何想法在哪里看？
以防堆叠：
Nov 08, 2016 2:19:53 PM oracle.dbtools.http.errors.ErrorPageFilter log
SEVERE: java.sql.SQLException: ORA-01460: unimplemented or unreasonable conversion requested
InternalServerException [statusCode=500, reasons=[]]
at oracle.dbtools.apex.ModApexContext.handleError(ModApexContext.java:274)
at oracle.dbtools.apex.OWA.init(OWA.java:411)
at oracle.dbtools.apex.ModApex.doPost(ModApex.java:156)
at oracle.dbtools.apex.ModApex.service(ModApex.java:100)
at oracle.dbtools.http.entrypoint.Dispatcher.dispatch(Dispatcher.java:109)
at oracle.dbtools.http.entrypoint.EntryPoint$FilteredServlet.service(EntryPoint.java:153)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:73)
at oracle.dbtools.http.forwarding.QueryFilteringRewrite.doFilter(QueryFilteringRewrite.java:89)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.forwarding.ForwardingFilter.doFilter(ForwardingFilter.java:59)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.cors.CORSPreflightFilter.doFilter(CORSPreflightFilter.java:67)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.cookies.auth.CookieSessionCSRFFilter.doFilter(CookieSessionCSRFFilter.java:77)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.auth.AuthenticationFilter.authenticate(AuthenticationFilter.java:89)
at oracle.dbtools.http.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:62)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.url.mapping.RequestMapperBase.doFilter(RequestMapperBase.java:53)
at oracle.dbtools.url.mapping.CompositeMapper$RequestMapperFilterChain.doFilter(CompositeMapper.java:144)
at oracle.dbtools.url.mapping.RequestMapperBase.doFilter(RequestMapperBase.java:53)
at oracle.dbtools.url.mapping.CompositeMapper.doFilter(CompositeMapper.java:37)
at oracle.dbtools.url.mapping.URLMappingBase.doFilter(URLMappingBase.java:89)
at oracle.dbtools.url.mapping.filter.URLMappingFilter.doFilter(URLMappingFilter.java:74)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.locale.LocaleFilter.doFilter(LocaleFilter.java:60)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.cors.CORSResponseFilter.doFilter(CORSResponseFilter.java:83)
at oracle.dbtools.http.filters.HttpResponseFilter.doFilter(HttpResponseFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.errors.ErrorPageFilter.doFilter(ErrorPageFilter.java:75)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.ecid.ECIDFilter.doFilter(ECIDFilter.java:35)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.auth.ForceAuthFilter.doFilter(ForceAuthFilter.java:44)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.filters.Filters.filter(Filters.java:47)
at oracle.dbtools.http.entrypoint.EntryPoint.service(EntryPoint.java:82)
at oracle.dbtools.http.entrypoint.EntryPointServlet.service(EntryPointServlet.java:49)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at oracle.dbtools.rt.web.HttpEndpointBase.dispatchableServices(HttpEndpointBase.java:156)
at oracle.dbtools.rt.web.HttpEndpointBase.service(HttpEndpointBase.java:85)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:404)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.sql.SQLException: ORA-01460: unimplemented or unreasonable conversion requested
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399)
at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1059)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:522)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:257)
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:587)
at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:220)
at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:48)
at oracle.jdbc.driver.T4CCallableStatement.executeForRows(T4CCallableStatement.java:938)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1150)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:4798)
at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:4901)
at oracle.jdbc.driver.OracleCallableStatement.execute(OracleCallableStatement.java:5631)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.execute(OraclePreparedStatementWrapper.java:1385)
at sun.reflect.GeneratedMethodAccessor34.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at oracle.ucp.jdbc.proxy.StatementProxyFactory.invoke(StatementProxyFactory.java:353)
at oracle.ucp.jdbc.proxy.PreparedStatementProxyFactory.invoke(PreparedStatementProxyFactory.java:178)
at oracle.ucp.jdbc.proxy.CallableStatementProxyFactory.invoke(CallableStatementProxyFactory.java:136)
at com.sun.proxy.$Proxy47.execute(Unknown Source)
at oracle.dbtools.apex.OWA.init(OWA.java:401)
... 73 more