ORA-12638: Failed Credential Retrieval is an error code that may seem daunting to those who encounter it. However, understanding the cause and potential solutions can help alleviate the frustration and confusion surrounding this error.
First and foremost, it's important to understand that ORA-12638 is an Oracle error code that occurs when there is an issue with retrieving user credentials. This means that the user attempting to access the database has provided incorrect or insufficient login information. This could be due to a typo in the username or password, or the user may not have the proper permissions to access the database.
One common cause of ORA-12638 is an expired password. Oracle has a built-in feature that requires users to change their password after a certain amount of time. If the password is not changed within the specified timeframe, it will expire and the user will receive this error when attempting to log in. In this case, the solution is simple – the user must change their password to a new one and try again.
Another potential cause of ORA-12638 is an incorrect database link. A database link is a connection between two databases, and if the link is not set up correctly, it can result in this error. It's important to ensure that the database link is properly configured and that the user has the necessary permissions to access the linked database.
In some cases, ORA-12638 can also occur due to network issues. If there is a problem with the network connection between the user and the database server, the credentials may not be able to be retrieved, resulting in this error. In this scenario, troubleshooting the network connection and resolving any issues should resolve the ORA-12638 error.
In addition to these common causes, there may be other underlying issues that can result in ORA-12638. It's important to check the Oracle documentation and consult with a database administrator for further assistance in troubleshooting and resolving this error.
To prevent ORA-12638 from occurring in the future, it's important to regularly check and update passwords, ensure proper configuration of database links, and maintain a stable and reliable network connection.
In conclusion, ORA-12638: Failed Credential Retrieval may be a frustrating error to encounter, but it can be resolved by understanding its causes and following the appropriate steps to fix it. By ensuring proper login information, database link configuration, and network connectivity, this error can be avoided in the future.
