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Kerberos Troubleshooting Guide (Doc ID 185897.1)

Last updated on OCTOBER 02, 2023

Applies to:

Advanced Networking Option - Version and later
Information in this document applies to any platform.


This document is meant to list some known problems encountered when configuring Kerberos authentication in a client server environment and the troubleshooting steps one can use to identify the cause of the problem. The primary source of information concerning Kerberos is the Oracle® Database 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-12638: Credential retrieval failed
  ORA-1017 : Invalid username/password; logon denied
 ORA-12631: Username retrieval failed
  ORA-12641: Authentication service failed to initialize
 ORA-12637: Packet receive failed
 ORA-12636: Packet send failed
 okinit: Cannot contact any KDC for requested realm
 okinit: KDC has no support for encryption type
 oklist returns no output
 Okinit Attempts To Get a Ticket For The Wrong Kerberos Realm
 ORA-12699 TNS:native service internal error

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