Oracle APEX ORDS upgrade causing 404 error with links - oracle

Question

Sys admins just upgraded from OHS to ORDS. I am not familiar with ORDS. I just do some Oracle APEX work. We have some links that open up .pdf files and we are getting 404 errors. We enabled the debug trace but I am not getting anywhere with this. Any ideas on what could be causing the problem?
Running: APEX Version: 19.2.0.00.18
ORDS Version: 20.4.3.r0501904
Here is the debug trace:
[TE] url-mapping start: 2023-02-07T22:40:53.255943269Z duration: 0ms
Could not find any dispatcher to handle request:
--Attributes--
oracle.dbtools.http.servlet.UriRequest = UriRequest [uri=https://www.test.com/vmdbagnt/plsql/Gate_Keeper.Get_Drawing_File/DART/CHRISORDS/J/2B945/17-JAN-2023/pg1/drawings/2B945_CHRISORDS_J.PDF, contextPath=/vmdbagnt/plsql]
oracle.dbtools.http.ecid = undX91G7JdD8dh5ZbntHtw
oracle.dbtools.common.di.Services = URL Mapped Scope
oracle.dbtools.plugin.api.di.InstanceLocator = URL Mapped Scope
--Attributes--
GET [/vmdbagnt/plsql]/Gate_Keeper.Get_Drawing_File/DART/CHRISORDS/J/2B945/17-JAN-2023/pg1/drawings/2B945_CHRISORDS_J.PDF HTTP/1.1
Host: www.test.com
host: www.test.com
connection: keep-alive
sec-ch-ua: "Not_A Brand";v="99", "Google Chrome";v="109", "Chromium";v="109"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
upgrade-insecure-requests: 1
user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36
accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
sec-fetch-site: same-origin
sec-fetch-mode: navigate
sec-fetch-user: ?1
sec-fetch-dest: document
referer: https://www.test.com/vmdbx/f?p=DART:QUERY:11551677945868::NO:::
accept-encoding: gzip, deflate, br
accept-language: en-US,en;q=0.9
cookie: _ga=GA1.2.2088229043.1633182967; _4c_=fVFNj5swFPwrK59jMMb4I7dqK7W9VHupekRgnMW7BCPbgaar%2FPc%2BJySRNlKRQH7DvPF7Mx9o6c2ItgUvy0IyWlWiUBv0bo4BbT%2BQntJ3Tp%2BDH9AW9TFOYZvny7JkYxOa7NXNedO6Q8x7%2B9oP8MaQf3%2BpX7ydG33M%2Brgf0AZp1xloL1QmMwF1%2FAsVLgmB8%2BRdd9CxjscpcRbTPoXuHX50Zrba1IvtYn9upuSO9ibdlWAiz%2FDkUwGnxY6dWz63reitTRX0LDbY2fhjHbwGcHSjAbQ1sYHqZzp6twSTpJ977%2FbmSTFAHbiDfp8VA5Te7Iz3Z9bVIBsCTia9BX03CqjBxrTkFVoR8HsF8QWcwHOUbhqcbobUASkB1%2BhoHeSF9o1NwLcv9a8fX6GmREpKFWFldsmSKi7QaYP%2BXMKlgvCKESHB%2BwhJSs5IeoDhbbemjGRHy1IUBvOWSMy0UbjlTYuZ7LTYacl3lKNVkxFVScVlxSiIzPaqQU3blkZwXDVFiZkQOyxJ2WDNWkMp75jgBN3mKiQnMBdX61yFvI41DaticScrUcKFil%2FJ7LbENK9s9rCyeFz5kmry8D99D1adTv8A; __utma=259910805.2088229043.1633182967.1651074519.1651074519.1; CFID=Zj3v2hrl7z9lq9mgcvittenrtbn7k0cm07xmisu1ajz3hpbnbe-284129; CFTOKEN=Zj3v2hrl7z9lq9mgcvittenrtbn7k0cm07xmisu1ajz3hpbnbe-59216697; LastMRH_Session=f101ed89; SBXSESSION=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; F5_ST=1z1z1z1675807062z604800; iss-BigIP-sb=1543700746.42271.0000; SMSESSION=eQG4Qu3lBCY7iV2l0bZ9sQ248+0NFAckScam6d2rOfDYPBrzLo7V3AHXLDN8NBWdDO0K/bj7TMgF+poT+sYVLGcQkhD8lueg3P+wOdjMH3qj753cKKAljgENSnSCbVoY1QPjiGkvuJPWWfcFHnZw88qQVymiqGMalxdYpd1JGExp85pCQW/wL3/9bZJwRKpMWgzt4hEq7Eoe1edfcUdXbQx2bP9UtZx53YTQu7isMP2JUctCRXQDC/rU3WFiiXOqMaJMW2K/xC//9bWtf+WlmOStFg1f5vUwrZcTqT/1I5JUJzSc/MgR8JG3KYa64KcX2d7hfPxiHeKn7eFVN6oPCkK1bWFtb96z93llPF52mkPqly9XF/4/C2epvkjxetYCa/cVI/yQwXrY90yaLvqMWWjshMniLzql+oWwEJgN7kxo3p1/ERMapq/2IjWRwC9pmPhc531nOU6WzZyqo79z8snbwMElHkdzXT62y8O2KKJia5vBaE/M7MuGvUTZgDV5yOmsAqLfbO6WaCXaI803G+8CskiNG7hCkqkWfGj//yxMMYxlGjPwaAn58BzMV6hnkDUAmauip3L330Jn0yARGou10nmtQFgUjy7TADi309mI8dwFbom5f1YdP7Ps3+MbaavK4ZsNFU/Eu2pZvmF52jSHA7OaquRszOoNx4bgQhuCSBQys5XtI3pRimo7Jgl8jakWfYWtRUUr/ZZdmrwJRwZP75Onb7KtP1f02OINNHVUOehgscQikiXLtJYZvkEz/aZaZGB0+Kc5JxTfcThm1LyIXLwnmqf8U8zvISHJqTSYFZ9tfl03VzI4B5wZ302C9hb2YtyVEP0I20NXaFir8Ub3/7RV+7aPgvQiiHmF+4idx14icVcTWoIt2Omp/8a7MM7gI/ce/SNBkaN39bhpd3XP8ynC0GAHZx9/BL3Rjjum8Inh3u5NYuPfSAsmHAaF+tNvB0FjoVDx6yucrfMelwIAoYh07hfpK25aZHCd3wl8JYWnCS8BXC9mXcnL2zLqGVwZB0HqgBX8zvNimxNx7yZUh5Y3QmfwKNl7mnZkw2tcGmrK+y2r23hzJSLkIZho
x-forwarded-for: 129.50.109.4'
DispatcherNotFoundException [statusCode=404, logLevel=FINER, reasons=[]]
at oracle.dbtools.http.entrypoint.Dispatcher.choose(Dispatcher.java:78)
at oracle.dbtools.http.entrypoint.Dispatcher.dispatch(Dispatcher.java:89)
at oracle.dbtools.http.entrypoint.EntryPoint$FilteredServlet.service(EntryPoint.java:170)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:73)
at oracle.dbtools.http.forwarding.QueryFilteringRewrite.doFilter(QueryFilteringRewrite.java:90)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.forwarding.ForwardingFilter.doFilter(ForwardingFilter.java:68)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.cors.CORSPreflightFilter.doFilter(CORSPreflightFilter.java:68)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.cookies.auth.CookieSessionCSRFFilter.doFilter(CookieSessionCSRFFilter.java:75)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.auth.AuthenticationFilter.authenticate(AuthenticationFilter.java:101)
at oracle.dbtools.http.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:64)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.url.mapping.RequestMapperImpl.doFilter(RequestMapperImpl.java:158)
at oracle.dbtools.url.mapping.URLMappingBase.doFilter(URLMappingBase.java:86)
at oracle.dbtools.url.mapping.db.DatabaseTenantMapping.dispatchSelf(DatabaseTenantMapping.java:189)
at oracle.dbtools.url.mapping.db.DatabaseTenantMappingBase.doFilter(DatabaseTenantMappingBase.java:50)
at oracle.dbtools.url.mapping.defaultpool.LegacyDatabaseTenantMapping.doFilter(LegacyDatabaseTenantMapping.java:46)
at oracle.dbtools.url.mapping.tenant.TenantMappingDispatcher.dispatch(TenantMappingDispatcher.java:52)
at oracle.dbtools.url.mapping.tenant.TenantMappingFilter.doFilter(TenantMappingFilter.java:75)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.forwarding.ForwardingFailedFilter.doFilter(ForwardingFailedFilter.java:41)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.auth.external.ExternalSessionFilter.doFilter(ExternalSessionFilter.java:59)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.rt.authentication.apex.ApexSessionQueryRewriteFilter.doFilter(ApexSessionQueryRewriteFilter.java:58)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.cors.CORSResponseFilter.doFilter(CORSResponseFilter.java:90)
at oracle.dbtools.http.filters.HttpResponseFilter.doFilter(HttpResponseFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.filters.AbsoluteLocationFilter.doFilter(AbsoluteLocationFilter.java:65)
at oracle.dbtools.http.filters.HttpResponseFilter.doFilter(HttpResponseFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.auth.external.ExternalAccessValidationFilter.doFilter(ExternalAccessValidationFilter.java:59)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.errors.ErrorPageFilter.doFilter(ErrorPageFilter.java:87)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.secure.ForceHttpsFilter.doFilter(ForceHttpsFilter.java:74)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:47)
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:47)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.filters.Filters.filter(Filters.java:67)
at oracle.dbtools.http.entrypoint.EntryPoint.service(EntryPoint.java:70)
at oracle.dbtools.http.entrypoint.EntryPointServlet.service(EntryPointServlet.java:125)
at oracle.dbtools.entrypoint.WebApplicationRequestEntryPoint.service(WebApplicationRequestEntryPoint.java:50)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at ApmCamsValve.invoke(ApmCamsValve.java:78)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:833)

Answer 1

My first answer would be... why don't you ask the sys admins instead of some strangers on a forum ? They probably followed the docs (https://docs.oracle.com/en/database/oracle/oracle-rest-data-services/22.4/orddg/migrating-mod_plsql-ords.html)
Then... read the logs. Even if you don't know ORDS, it gives you a lot of information.
In the logs it is visible that the referrer url is "https://www.test.com/vmdbx/f?p=DART:QUERY:11551677945868::NO:::", that is your apex url, and the path is "vmdbx". But the request is to a url that looks like this "https://www.test.com/vmdbagnt/plsql/Gate_Keeper.Get_Drawing_File/DART/CHRISORDS/J/2B945/17-JAN-2023/pg1/drawings/2B945_CHRISORDS_J.PDF". In that url the path is "vmdbagnt/plsql". My guess is that this path was configured in OHC but doesn't exist yet/is named differently in ORDS
A pl/sql gateway needs to be configured in ORDS, just like it was configured in OHC. That means you'll tell ords: "if I give you this path, then connect to the database as that user and execute the procedure". This could already be done if the migration was done correctly but it might require some changes on your part because the path for the pl/sql gateway is no longer "vmdbagnt/plsql". But... only the sysadmins have that information.