ALERT: Some images may not load properly within the Knowledge Base Article. If you see a broken image, please right-click and select 'Open image in a new tab'. We apologize for this inconvenience.

Error : Web Agent undefined symbol: ap_unixd_config


Article ID: 228011


Updated On:


CA Single Sign On Agents (SiteMinder) SITEMINDER



Starting Web Agent on Oracle HTTP Server, this one doesn't start and
return error :

  <2021-10-19 08:14:28> <INFO> <OHS-0> <httpd.worker: Syntax error on line 212 of
  Cannot load /opt/CA/webagent/bin/
  into server:
  undefined symbol: ap_unixd_config




According to Oracle Documentation, it seems that Apache 2.4 is
available only from version 12.2.1, the 12.2.0 still is Apache 2.2 (1).




  Web Agent 12.52SP1CR11 on OHS on Linux;

  Oracle Interim Patch Installer version





- In /opt/Middleware/user_projects/domains/ohs_domain/config/fmwconfig/components/OHS/instances/ohs1/httpd.conf

  set the library to be 


  instead of



Additional Information



    New Features in 12c (12.2.1)

    New and Changed Features Available with Apache httpd 2.4

      In this release, the Oracle HTTP Server core runtime is based on
      the release of Apache httpd 2.4.