FAQ: Database Authentication
(Doc ID 2721097.1)
Last updated on OCTOBER 10, 2022
Applies to:
Oracle Database - Enterprise Edition - Version 10.2.0.1 and laterInformation in this document applies to any platform.
Goal
This note tries to answer some of common Database authentication questions. It provides a "fast track" to set up and debug ORA errors with Database authentication, however, this is not meant as an exhaustive replacement of the official documentation.
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Solution
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In this Document
| Goal |
| Solution |
| 1. Why Can I Login AS SYSDBA With Any Username and Password? |
| 2. Can SYS password be changed using ALTER USER command? |
| 3. Is it supported to use OPS$ in 12c and above Database versions? |
| 4. How to restrict Database access through specific application or tool? |
| 5. How to restrict remote OS authentication? |
| 6. What Oracle client version can connect to What Oracle Database version? |
| 7. How to configure CMU Centrally Managed User authentication? |
| 8. How to implement implement Active Directory authentication for Database users? |
| 9. How to do proxy authentication? |
| 10. Why Database user login fails with ORA-1017 after upgrading to 12c DB? |
| 11. How to troubleshoot ORA-1031/ORA-1017 errors with sysdba login? |
| 12. Why some Users have null value in sys.user$.password column? |
| 13. How to store oracle database user's password safely in a wallet? How to do password authentication in script without exposing the password in trace/log files? |
| 14. Why Expdp/Impdp doesn't work with OS or External Password Store authentication? |
| 15. Why Database user logins are slow / taking more time to connect? |
| 16. Why DBA_USERS.ACCOUNT_STATUS shows LOCKED instead of LOCKED(TIMED), after FAILED_LOGIN_ATTEMPTS Is Breached? |
| 17. Why connection on Standby DB fails with 'ORA-28000: the account is locked', but the account_status is OPEN? |
| 18. How to change Oracle owner from Local System account to Domain user account in Oracle Database server on Windows OS? |
| 19. Why the Database user password change is failing with error 'ORA-00604: Error Occurred At Recursive SQL Level 1'? |
| 20. Why ptime, expiry_date is not updated for SYS user after applying July 2018 or later RU / PSU / DBBP ? |
| 21. What is schema-only accounts? |
| References |