ORA-00982: missing plus sign
Cause: A left parenthesis appeared in a join condition, but a plus sign (+) did not follow. A left parenthesis in a join condition usually signals an outer-join specification and so a plus sign is expected to follow. To specify an outer join on a column in a join operation, follow the column reference in the join condition with a plus sign (+) enclosed in parentheses.
Action: Correct the SQL syntax and retry the statement.