Kerberos Constraint Delegation Fails with ORA-12638 On Linux Platform
(Doc ID 2421596.1)
Last updated on MARCH 03, 2019
Applies to:Advanced Networking Option - Version 188.8.131.52 and later
Information in this document applies to any platform.
Kerberos Constrained Delegation with the latest version of Oracle OCI on Linux fails with "ORA-12638: Credential retrieval failed".
Kerberos authentication works fine for single hop but when double hop (delegation) is configured it (call to OCIServerAttach) fails with "ORA-12638: Credential retrieval failed".
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