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Kerberos Authentication Fails With ORA-12638 On Windows 2008 R2 (Doc ID 1225063.1)

Last updated on JANUARY 30, 2022

Applies to:

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


A client running on Windows 2008 R2 is not able to connect using kerberos.

This is happening only when SQLNET.KERBEROS5_CC_NAME = OSMSFT://. If the kerberos tickets are requested manually and stored in a file (SQLNET.KERBEROS5_CC_NAME = <file>) everything works as expected. Furthermore the problem cannot be reproduced on Windows 2000 or Windows  2003.


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