Getting error While attaching Report out put Pdf file to POAPPRV workflow

Question

I am getting below error in workflow
Item Type = POAPPRV
Item Key = 60383-243513
User Key =40515
Error Name = WF_ERROR
Error Message = [WF_ERROR] ERROR_MESSAGE=3835: Error '-20002 - ORA-20002: [WFMLR_DOCUMENT_ERROR]' encountered during execution of Generate function 'WF_XML.Generate' for event 'oracle.apps.wf.notification.send'. ERROR_STACK=
GNE_PO_CREATE_FILE_ATTACHMENT.Gne_Create_File_Attachment(60383-243513 OAPPRV, text/html)
Wf_Notification.GetAttrblob(207046, PO_REPORT, text/html)
WF_XML.GetAttachment(207046, text/html)
WF_XML.GetAttachments(207046, http://gnedxbebsdev.gerab.ae:8003/pls/DEV, 850
WF_XML.GenerateDoc(oracle.apps.wf.notification.send, 207046)
WF_XML.Generate(oracle.apps.wf.notification.send, 207046)
WF_XML.Generate(oracle.apps.wf.notification.send, 207046)
Wf_Event.setMessage(oracle.apps.wf.notification.send, 207046, WF_XML.Generate)
Wf_Event.dispatch_internal()
Error Stack =
Activity Id = 124108
Activity Label = NOTIFY_APPROVER_SUBPROCESS:GNE_PO_NOTI_TO_CEO
Result Code = #MAIL
Notification Id = 207046
The Code used in procedure is given below
procedure Gne_Create_File_Attachment (document_id in varchar2,
display_type in varchar2,
document in out blob,
document_type in out varchar2)
is
l_itemtype varchar2(100);
l_itemkey varchar2(100);
l_output_directory varchar2(30);
l_filename varchar2(255);
src_loc bfile;
bdoc blob;
src_offset number := 1;
dst_offset number := 1;
amount number;
l_request_id varchar2(100);
begin
l_itemtype := substr(document_id, 1, instr(document_id, ':') - 1);
l_itemkey := substr(document_id, instr(document_id, ':') + 1, length(document_id) - 2);
select attribute4
into l_request_id
from po_headers_all
where to_char(PO_HEADER_ID)=l_itemtype;
l_output_directory := 'APPLCSF/APPLOUT';
l_filename := 'o'||l_request_id;
src_loc := bfilename(l_output_directory,l_filename);
dbms_lob.createTemporary(bdoc, FALSE, dbms_lob.call);
dbms_lob.fileopen(src_loc, dbms_lob.file_readonly);
dbms_lob.loadblobfromfile(bdoc,src_loc,dbms_lob.lobmaxsize,src_offset,dst_offset);
dbms_lob.fileclose(src_loc);
amount := dbms_lob.getLength(bdoc);
dbms_lob.copy(document,bdoc,amount,1,1);
document_type := 'application/pdf; name=attach.pdf';
EXCEPTION
WHEN OTHERS THEN
wf_core.CONTEXT('GNE_PO_CREATE_FILE_ATTACHMENT'
,'Gne_Create_File_Attachment'
,document_id
,display_type);
RAISE;
end GNE_Create_File_Attachment;
PROCEDURE Gne_Assign_wf_Attribute(
itemtype IN VARCHAR2,
itemkey IN VARCHAR2,
actid IN NUMBER,
funcmode IN VARCHAR2,
resultout OUT NOCOPY VARCHAR2)
IS
v_user_name varchar2(100);
BEGIN
IF FUNCMODE = 'RUN' THEN
wf_engine.setitemattrdocument
(itemtype => itemtype
, itemkey => itemkey
, aname => 'PO_REPORT'
, documentid =>'PLSQLBLOB:GNE_PO_CREATE_FILE_ATTACHMENT.GNE_Create_File_Attachment/'
|| itemkey
|| ':'
|| itemtype);
end if;
EXCEPTION
WHEN OTHERS THEN
wf_core.CONTEXT('GNE_PO_CREATE_FILE_ATTACHMENT'
,'Gne_Assign_wf_Attribute'
,itemtype
,itemkey);
RAISE;
END Gne_Assign_wf_Attribute;
Can Any Body Please help me....
It is very urgent..
Thanks In Advance
Anil Kumar

Answer 1

There are two ways to look at what error the PLSQLBLOB API is throwing.
1) Call your PLSQLBLOB API GNE_PO_CREATE_FILE_ATTACHMENT.Gne_Create_File_Attachment directly from a PLSQL block and verify that it returns the BLOB data successfully.
You could also call another WF API that in turn executes the PLSQLBLOB API internally. For example,
<pre>
declare
l_document blob;
l_doctype varchar2(240);
l_aname varchar2(90);
begin
dbms_lob.CreateTemporary(l_document, true, dbms_lob.Session);
-- 207046 - This is the notification id of your failed workflow
-- PO_REPORT - Document type attribute
-- 'text/html' - Content Type being generated for
Wf_Notification.GetAttrBLOB(207046, 'PO_REPORT', 'text/html', l_document, l_doctype, l_aname);
-- Print the size of the document here to verify it was fetched correctly
end;
</pre>
2) Turn on log for SYSADMIN user with following attributes.
Log Enabled = TRUE
Log Level = ERROR
Log Module = wf.plsql%
Restart the Workflow Deferred Agent Listener and Workflow Notification Deferred Agent Listener and run your workflow process. Search for log messages written for above context and you can identify the error at wf.plsql.WF_XML.GetAttachment module with message starting as "Error when getting BLOB attachment ->"
Hope this helps.
Vijay