Oracle Access Manager 11gr2 (OAM 11.1.2.x) Federation - Authentication Fails "System error"

Oracle Access Manager 11gr2 (OAM 11.1.2.x) Federation - Authentication Fails "System error" (Doc ID 2285140.1)

Last updated on JULY 17, 2017

Applies to:

Oracle Access Manager - Version 11.1.2.2.0 and later
Information in this document applies to any platform.

Federation service provider partner configured in OAM 11GR2PS2.
Mapped custom authentication scheme to the partner for custom login page.
The login page is part of another application configured in the same OAM using 11G Webgate.
The login page URL (/Logon) is configured as unprotected.
When we access the federated application and redirect to login, the webgate intercepts the request and reloads the login page. Therefore when the user signs in, the OAM_REQ_0 is already invalidated and results in server error.

Error

System error, Please re-try your action. If you continue to get this error, please contact the Administrator.

The OAM_ID is getting set before the credentials are submitted rather than after, which is the expected scenario.

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