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400 Bad Request Error When Trying To Authenticate EBusiness Access Through Oracle Access Manager 11g R2PS2 (OAM 11.1.2.x) (Doc ID 1639261.1)

Last updated on FEBRUARY 03, 2022

Applies to:

Oracle Access Manager - Version and later
Information in this document applies to any platform.
Oracle is not responsible for instructions/information from 3rd party sites that may be contained in this KM note.


Oracle Access Manager 11g R2PS2 (OAM 11.1.2.x) with WNA Authentication

OHS act as proxy for OAM Managed server port

Some users have a browser error page displayed when they try to authenticate using OAM. The page error is  "400 Bad Request".

The content of the page is "Bad Request The request could not be understood by server due to malformed syntax".

This does not occur for all users, though a substantial number are having the issue. Issue seen on all browsers

http trace sample -



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