ORA-01920 user name C##HTDASM conflicts with another user or role name

The error message "ORA-01920: user name 'C##HTDASM' conflicts with another user or role name" suggests that you are trying to create a user or role with the name 'C##HTDASM', but another user or role with the same name already exists in the Oracle database.

To resolve this issue, you can either choose a different name for the user or role you are trying to create or drop the existing user or role with the conflicting name.

Here are the steps to drop an existing user or role:

1. Connect to the Oracle database using a privileged user account, such as SYS or SYSTEM.
2. Execute the following SQL statement to drop the user or role:
   • For a user: DROP USER C##HTDASM CASCADE;
   • For a role: DROP ROLE C##HTDASM;
3. After dropping the existing user or role, you can proceed with creating the new user or role with the desired name.

Note: Dropping a user or role will permanently remove all the objects owned by that user or role, so make sure to back up any important data or objects before performing the drop operation.