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ORA-12638: Credential retrieval failed windows kerberos impersonation

6600c82c-88b2-4271-894d-639746218d22Oct 26 2015 — edited Oct 26 2015

I have a prototype to doing ODBC connection to the Oracle database with kerberos configuration,

after I set the sqlnet.ora with SQLNET.KERBEROS5_CC_NAME=OSMSFT://.

the prototype can connect to the windows kerberos ticket cache, and using that TGT to get service ticket.

but after I using ImpersonateLoggedOnUser() do some impersonation to other account,  this prototype can not connect to the cache, and output with this error "ORA-12638: Credential retrieval failed".

can some one help me about this.

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Locked on Nov 23 2015
Added on Oct 26 2015
#database-security, #database-security-general, #windows
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