Oracle® Database 11g / 12c / 18c error codes ORA-01417: a table may be outer joined to at most one other table

ORA-01417: a table may be outer joined to at most one other table

Oracle Error Code: ORA-01417

Cause: a.b (+) = b.b and a.c (+) = c.c is not allowed

Action: Check that this is really what you want, then join b and c first in a view.