Final answer:
The ORA-00955 error occurs when you try to create a database object with a name that is already used by another existing object in an Oracle database. To fix it, use a different name for the new object or handle the existing one appropriately.
Step-by-step explanation:
You are I getting error ORA-00955 because in Oracle databases, this error is triggered when you attempt to create an object, such as a table, view, index, synonym, or some other database object, with a name that is already used by an existing object in the same namespace. For example, if there's already a table named 'users' and you try to create another table or view with the same name, the database will raise the ORA-00955 error.
To resolve this issue, you must choose a different name for the new object that's not already in use, or you may need to remove or rename the existing object if it is no longer needed. Ensuring unique names for each object in your database schema is crucial to prevent such conflicts.