Client Gets ORA-12638 When Kerberos Ticket is not Available
Last updated on NOVEMBER 21, 2017
Applies to:Advanced Networking Option - Version 8.1.7 to 184.108.40.206 [Release 8.1.7 to 11.2]
Information in this document applies to any platform.
This problem can occur on any platform.
Checked for relevance on 07-Jun-2013
The server has SQLNET.AUTHENTICATION_SERVICES with Kerberos included in the list of authentication devices. The client is trying to connect through the listener and is providing a password( i.e. sqlplus userid/password@connect). The Kerberos server is unavailable and as such the client then gets the error ORA-12638.
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