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APEX Web Service Calls Fail For TLS With in SSL: ORA-28857: Unknown SSL Error (Doc ID 2033910.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Application Express (formerly HTML DB) - Version 4.2.6 and later
Information in this document applies to any platform.


On : 4.2.4 version of Application Express with the following setup:

Database Version
Package: apex_web_services
Function: make_rest_request
REST Services are connection: TLS 1.2 (Details in screen shot)

An APEX application has been running with an SSL web service successfully. Recently the web service has been modified to use TLS 1.2.
Since that change, the web service requests have been failing with the following error:

All other web service and UTL_HTTP calls run successfully from SQL*Plus and from APEX. This problem is specific to TLS requests.


 The vendor has changed their web service from SSL to TLS.


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