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Oracle Access Manager (OAM) Login Fails 400 Bad Request After Submitting Credentials (Doc ID 2474746.1)

Last updated on SEPTEMBER 18, 2023

Applies to:

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


Login Fails 400 Bad Request After Submitting Credentials (/oam/server/auth_cred_submit) via a Load Balancer


Oracle Access Manager (OAM)

2 OAM Servers in a cluster, listening on SSL Port for <MANAGED_SERVER_PORT>

2 OHS Servers with WebGate. The 2 OHS Servers listen on <SSL_PORT>

mod_wl_ohs.conf (WLS Proxy Plugin) configured to forward /oam requests to the 2 OAM Servers in the cluster

1 Load Balancer in front of the 2 OHS Servers, listening on <SSL_PORT>

OAM Server host in Access Manager Settings set to LOAD BALANCER Host and <SSL_PORT>


Steps to reproduce

1. Access the protected URL via the Load Balancer: http://<LBR-HOSTNAME>.<DOMAIN>:<PORT>/<FILE_NAME>

2. User is redirected to OAM for authentication. However, the OOTB login page loses all formatting.

3. Fiddler Trace shows that all Javascripts, CSS and Images files throw a 400 (Bad Request error), as shown below:






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