ORA-00024: logins from more than one process not allowed in single-process mode
What triggered the Error:
Trying to login more than once from different processes for ORACLE started in single-process mode.What should we do to fix it:
Logoff from the other process.
If this was not sufficient go over to:
Oracle Official Support Knowledge Center
Or maybe those geeks at: StackOverflow Board
Or maybe those geeks at: StackOverflow Board