Search notes:

ORA-01756: quoted string not properly terminated

select
   'foo
from
   dual;

Comments

The following two SQL statement comments cause a ORA-01756: quoted string not properly terminated error:

begin
    dbms_output.put_line('foo');
/*
    dbms_output.put_line('*/');
*/
end;
/

begin
   dbms_output.put_line('two
lines');
-- dbms_output.put_line('two
lines');

end;
/

See also

Other Oracle error messages