Unable To Establish Connection To Web Cache From F5 Big IP Loadbalancer

(Doc ID 422091.1)

Last updated on MARCH 08, 2017

Applies to:

Web Cache - Version 9.0.4 to [Release AS10g to AS10gR2]
Information in this document applies to any platform.
This problem can occur on any platform.


Third-party hardware loadbalancer - F5 Big IP is unable to reach Oracle WebCache.

Oracle WebCache may become intermittently unreachable from browser, which can be confirmed by accessing the below URL from a browser:


The Big IP console shows Oracle WebCache as down and the following errors are seen in Oracle WebCache event_log:

[error 12417] [ecid: 95667433177,0] HTTP request-header parsing error - no header name. Client IP: <f5_IP_Address>
[error 12419] [ecid: 95667433177,0] Dump of offending HTTP request-header line: GET /


Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms