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APEX 26.1 APEXlang import fails — sign-in/exchange 404 on customer-managed ORDS 26.1.1

Suleman SiddiquiMay 21 2026

Environment:

  • Oracle AI Database 26ai Free (23.26.0.0)
  • APEX 26.1.0
  • ORDS 26.1.1.r1321130 (Docker container: container-registry.oracle.com/database/ords:latest)
  • Apache HTTP Server with reverse proxy
  • Single PDB: XEPDB1

Problem Description:

After upgrading ORDS from 25.3.1 to 26.1.1 and APEX from 24.2 to 26.1, the new APEXlang import feature fails for existing workspaces with the error:

ORDS Authentication request failed. Reason: Not Found

ORDS logs show:

POST /ords/maxapex_api/sign-in/exchange HTTP/1.1  404 Not Found
DispatcherNotFoundException [statusCode=404]

What We Tried:

  • De-register and re-register schema from APEX Builder UI multiple times

  • Delete schema from ORDS_METADATA.ORDS_SCHEMAS and ORDS_URL_MAPPINGS and re-register

  • ORDS.ENABLE_SCHEMA via PL/SQL

  • ORDS_ADMIN.PROVISION_RUNTIME_ROLE

  • Switching plsql.gateway.mode between direct and proxied

  • Running apex_rest_config.sql

  • Manually extracting and running ords_apex_sso.pls/plb from ORDS WAR

  • Creating sys.v_$pdbs synonym for ORDS_PUBLIC_USER

  • Granting SELECT ON sys.v_$pdbs TO PUBLIC

  • Forcing ORDS schema version back to 25.3.1 and re-running install

  • Multiple ORDS container restarts

    How we can solve this issue i also sahre the screenshot with error that we faced.

Questions:

  • Has anyone successfully resolved this issue for upgraded environments?

  • Is there an additional ORDS/APEX migration step required for the new sign-in/exchange authentication flow in APEX 26.1?

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Post Details
Added on May 21 2026
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