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SSL Troubleshooting Guide (Doc ID 166492.1)

Last updated on FEBRUARY 23, 2023

Applies to:

Advanced Networking Option - Version 8.1 to [Release 8.1 to 12.1]
Information in this document applies to any platform.


This document is designed to assist with problems encountered when configuring SSL in a client server environment. The primary source of information concerning SSL is the Oracle Advanced Security Administrator's Guide.

NOTE: In the images and/or the document content below, the user information and data used represents fictitious data from the Oracle sample schema(s) or Public Documentation delivered with an Oracle database product. Any similarity to actual persons, living or dead, is purely coincidental and not intended in any manner. 

Troubleshooting Steps

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In this Document
Troubleshooting Steps
 Typical Problems
 ORA-28862: SSL connection failed
  ORA-29024:Certificate Validation Failure
 ORA-29143: Message 29143 not found
 ORA-28860: Fatal SSL error
  ORA-29263: HTTP protocol error
 ORA-28868: certificate chain check failed
 ORA-28865: SSL connection closed
 ORA-01004: Default username feature not supported; log denied 
 Unable to Import User Certificates into Oracle Wallet Manager
 Cannot create certificates with key length greater than 512bits 
 ORA-12560: TNS:protocol adapter error
 ORA-28864: SSL connection closed gracefully
 SSL/TCPS Authenticated Connections to the Database Error with ORA-01017
 "SSL Client: Server DN doesn't contain expected SID name" seen in the alert log
 Listener Configured To Use TCPS Fails To Start Cleanly (ORA-29113)
 ORA-29002: SSL transport detected invalid or obsolete server certificate
 ORA-29003: SSL transport detected mismatched server certificate

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