Question

我有一个用PDF文档填充BLOB变量的过程。我想要做的是添加逻辑，仅在静态日期的60天内显示PDF文档。见下文：

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;

我收到的错误是：ORA-22275: invalid LOB locator specified.

我是Oracle SQL的新手，并且不确定为什么我的ValidID检查通过返回z_lob而工作，但我的case语句没有。

编辑：添加完整错误堆栈

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

Answer 1

暂时首先暂停你的吊杆

DBMS_LOB.CREATETEMPORARY(z_lob,true); --true if you want it to be cached.

Answer 2

您的函数可能会返回（取决于您的audit参数值）一个带有NULL值的blob到SYS.WPG_DOCLOAD方法，该方法会抛出您看到的未处理异常。

也许您可以将return z_lob;修改为return nvl(z_lob, empty_blob());

ORA-22275错误：指定了无效的LOB定位器

2 个答案: