поставь в свойствах полей query only

Attributes > Edit > Enabled = Yes

Settings for your Save Interactive Grid Data process:

Settings > Set Target Type = PL/SQL Code
Settings > PL/SQL Code to Insert/Update/Delete =
begin
case :APEX$ROW_STATUS
when 'I' then -- Note: In EA2 this has been changed from I to C for consistency with Tabular Forms
insert into emp ( empno, ename, deptno )
values ( :EMPNO, :ENAME, :DEPTNO )
returning rowid into :ROWID;
when 'U' then
update emp
set ename = :ENAME,
deptno = :DEPTNO
where rowid = :ROWID;
when 'D' then
delete emp
where rowid = :ROWID;
end case;
end;

https://community.oracle.com/thread/3937159
тогда так