我有一個用PDF文檔填充BLOB變量的過程.我想要做的是添加邏輯,僅在靜態日期的60天內顯示PDF文檔.見下文：

check_staticdate number(1);

function DisplayPDF (audit in number) RETURN blob is

person_id person.person_id%type;

z_lob blob;

blob_length NUMBER;

CURSOR getPDF(audit number) IS

select report

from report_table

where report_type = 'PDF'

and job_no = audit order by rec_no;

begin

/* Check Valid ID */

if not package.ValidID(person_id,check_only=>TRUE) then

return z_lob;

end if;

/* Here is the case statement.*/

select case

when exists

(

SELECT 'x' from table

where table_id = person_id

and trunc(sysdate) < trunc(table_static_date + 60)

)

then 1

else 0

end into check_staticdate

from dual;

if (check_staticdate = 0) then

return z_lob;

end if;

open getPDF(audit);

fetch getPDF into z_lob;

close getPDF;

return z_lob;

end DisplayPDF;

我收到的錯誤是：ORA-22275：指定了無效的LOB定位器.

我是Oracle sql的新手,并且不確定為什么我的ValidID檢查通過返回z_lob而工作,但我的case語句沒有.

編輯：添加完整的錯誤堆棧

Failed to execute target procedure ORA-22275: invalid LOB locator specified

ORA-06512: at "SYS.WPG_DOCLOAD",line 51

ORA-06512: at "User.Package",line 733

ORA-06512: at line 33

總結

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