How to fix the error ORA-00024: logins from more than one process not allowed in single-process mode?

In this post, you’ll learn more about the Oracle ErrorORA-00024: logins from more than one process not allowed in single-process mode with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-00024: logins from more than one process not allowed in single-process mode

Reason for the Error ORA-00024: logins from more than one process not allowed in single-process mode

Trying to login more than once from different processes for ORACLE started in single-process mode.

How to fix the Error ORA-00024: logins from more than one process not allowed in single-process mode ?

You can fix this error in Oracle by following the below steps

Logoff from the other process.