Oracle.ManagedDataAccess and ORA-01017: invalid username/password; logon denied

Question

I have a challenging situation on one of our servers. I have an ASP.NET MVC 3 application that needs to connect to an Oracle 12c database. It does so using the following co

Answer 1

I had the same problem! I didn't try changing the RegKey but I did try changing the web and machine config. This did not work.

What did solve the problem was changing the app pool I was running under!

The App Pool was running under a service account and once I moved it to a new App Pool with just the default system account it started picking up the User ID and Password from the config.

Answer 2

Check the case of user name and password.

Answer 3

I was trying with the command:

ALTER SYSTEM SET SEC_CASE_SENSITIVE_LOGON = FALSE;

But it didn't work. I had to change it using the SQL Developer in the DBA tab.

1. Find the Parameter 'sec_case_sensitive_logon' and change its value to 'FALSE'
2. Commit your changes using the button:
3. It will ask the commit strategy and you have to choose both:
4. Click 'Apply'
5. I don't know if this step is required, but I also changed the user's password. (I set the same password)

In case, you don't know how to open the 'Initialization Parameters':

1. Open 'Oracle SQL Developer'
2. Go to 'View' menu and select 'DBA'
3. Choose a connection
4. And then click on 'Initialization Parameters'