How to resolve ORA-01918 Error Message in Oracle database

Learn the reason and how to get to the bottom of the ORA-01918 error message in Oracle.

Description

When you encounter an ORA-01918 error, the following error message will appear:

ORA-01918: user name does not exist

You tried to execute a command that precise a consumer identify or role identify that does now not exist.

The option(s) to resolve this Oracle error are:

Option #1

Correct the command and re-execute.

To view a listing of all users, execute the following statement:

SELECT *
FROM ALL_USERS;

To view a checklist of all roles, execute the following statement:

SELECT *
FROM DBA_ROLES;