POST DATA PRESERVATION DOES NOT WORK WHEN POST DATA IS LARGER THAN 5000 BYTES

(Doc ID 2332484.1)

Last updated on NOVEMBER 28, 2017

Applies to:

Oracle Access Manager - Version 11.1.2.3.170117 to 11.1.2.3.171017 [Release 11g]
Information in this document applies to any platform.

Symptoms

Using POST Data Preservation and Restoration to make sure POST data gets restored when session is in idle timeout before submit.

This works for small payloads but it fails when POST data is roughly 5000 KB large.  POST data is lost on re-authentication, after either token validity period expires at Webgate side, or idle session timeout.

A blank page is displayed.


Changes

Enabled POST Data Restoration (set PostDataRestoration=true) and increased the following parameters in the Agent/Webgate user-defined parameters:
MaxPostDataBytes=80000
MaxPreservedPostDataBytes=80000
ChallengeRedirectMaxMessageBytes=80000

so that POST data is not exceeding the limit.
Still, POST data is not preserved.

Cause

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