ORA-01002: fetch out of sequence

错误定位：

SQL> ！oerr ora 01002
01002, 00000, "fetch out of sequence"
// *Cause: This error means that a fetch has been attempted from a cursor
// which is no longer valid. Note that a PL/SQL cursor loop
// implicitly does fetches, and thus may also cause this error.
// There are a number of possible causes for this error, including:
// 1） Fetching from a cursor after the last row has been retrieved
// and the ORA-1403 error returned.
// 2） If the cursor has been opened with the FOR UPDATE clause,
// fetching after a COMMIT has been issued will return the error.
// 3） Rebinding any placeholders in the SQL statement, then issuing
// a fetch before reexecuting the statement.
// *Action: 1） Do not issue a fetch statement after the last row has been
// retrieved - there are no more rows to fetch.
// 2） Do not issue a COMMIT inside a fetch loop for a cursor
// that has been opened FOR UPDATE.
// 3） Reexecute the statement after rebinding, then attempt to
// fetch again.

SQL>查看pl sql：declare
cursor emp_cursor is
select * from emp_text for update;
v_object_name emp_text%rowtype;
begin
open emp_cursor;
loop
fetch emp_cursor
into v_object_name;
if emp_cursor%found then
update emp_text
set object_id =
（emp_seq.nextval）
where object_name = v_object_name.object_name;
<span style="color: rgb（255, 102, 102）;"> COMMIT;</span>
end if;
exit when emp_cursor%notfound;
end loop;
close emp_cursor;
end;正确写法：declare
cursor emp_cursor is
select * from emp_text for update;
v_object_name emp_text%rowtype;
begin
open emp_cursor;
loop
fetch emp_cursor
into v_object_name;
if emp_cursor%found then
update emp_text
set object_id =
（emp_seq.nextval）
where object_name = v_object_name.object_name;
end if;
exit when emp_cursor%notfound;
end loop;
close emp_cursor;
COMMIT;
end;Oracle hints 学习笔记整理Oracle 11g新版本增加对原始数据文件验证过程相关资讯 ORA-01002 本文评论查看全部评论（0）