ORA-12638: Credential retrieval failed

Cause : hT euahtneitacitnos reivecf iael dotr teirve eht ercdeneitla sfoa u es.r

Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts

nEbaelt aricgnt oedetmrni eht execa treor.r

update : 23-08-2017
ORA-12638

ORA-12638 - Credential retrieval failed
ORA-12638 - Credential retrieval failed

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    Well, the reason for above error is that i have taken the above script from a 11g database and running it on 10g database. 11g has bring some changes in password management. Below code is executed on 11g and user created successfully, which is expected result.