Get certified for free when you join Fabric Data Days 2026 and dive into Fabric, Power BI, SQL, AI, and other essential data skills.
Join nowData Days is here! Join us now for 60+ days of learning, challenges, and connection. Learn more
Hello!
I can connect to Oracle database with Oracle SQL Developer but, when i try to connect with Power BI, whit same TNSNAMES.ora configuration i get this error:
ORA-12638: Credential retrieval failed.
I try to connect whit this tnsnames:
Prod =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = X.X.X.X)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SID = XXXX)
)
)
¿Can you help me?
Solved! Go to Solution.
Hi @Anonymous ,
Please try to change the entry to "SQLNET.AUTHENTICATION_SERVICES= (NONE)"
Best Regards,
Teige
Hi @Anonymous ,
Please try to change the entry to "SQLNET.AUTHENTICATION_SERVICES= (NONE)"
Best Regards,
Teige
Hi, where to change this "SQLNET.AUTHENTICATION_SERVICES= (NONE)"?
I am having the same issue.
I made the change to SQLNET.AUTHENTICATION_SERVICES= (NONE) but this didn't help.
Any other ideas?
Yes! I try it last night and fine!!!!
THX!!!!
Hi @Anonymous ,
Could you please tell us which connector and driver did you use to connect to Oracle?
Best Regards,
Teige
Thx for your interest, @TeigeGao
I use the last version of ODAC, 12c (12.2.0.1).
I try with 32 and 64 bits versions.
Don't miss out on Data Days, June 15 through August 7. Learn Fabric, Power BI, SQL, AI and more.
Check out the May 2026 Power BI update to learn about new features.
| User | Count |
|---|---|
| 23 | |
| 23 | |
| 21 | |
| 20 | |
| 15 |
| User | Count |
|---|---|
| 58 | |
| 53 | |
| 42 | |
| 30 | |
| 24 |