ORA-12638: Credential retrieval failed

ORA-12638: Credential retrieval failed

Authentication Methods Available with Oracle Net Services:

NONE: for no authentication. Valid username/password need to access db.
ALL: for all authentication methods
NTS: for window authentication

You need to go the the %ORACLE_HOME%\network\admin location:

eg E:\oracle\dbhome_1\network\admin folder

On check, I found following line in sqlnet.ora file


Then modified the above line and it resolved problem:


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.