Write blob data from database to unix server

Question

Hi all,
I need to send the attachment file into the mail. I have a header form in which I have implemented Download/Upload functionality using Apex user guide. When ever a user fill all the entries and submit the form then some field information along with attachment I need to send to the user.
I mean when ever user hit the submit button it should take blob data from my custom table tmp_downlod_files and send to the user as an attachment.
I have searched the post and got lot information but not able to get succeed.
I have implemented java stored procedure for sending automatic mail when user is submitting the form but what I need is to take blob content from database and send as an attachment.
1: So I need to write blob content from custom table to unix server in some location and from there I need to attach that file.
2: the java store which I have implemented for sending automatic mail is working and one argument is attachment which I am passing null for now. So mail is working how to write the file from database to unix server and send as an attachment.
What I did for writing file from database to unix server:
1:
CREATE OR REPLACE PROCEDURE trx_blob_to_file (l_header_id IN NUMBER)
IS
BEGIN
FOR rec_picture IN (SELECT ID
FROM TMP.tpx_download_files
WHERE header_id = l_header_id
AND mime_type LIKE ('image' || '%'))
LOOP
DECLARE
l_out_file UTL_FILE.file_type;
l_buffer RAW (32767);
l_amount BINARY_INTEGER := 32767;
l_pos INTEGER := 1;
l_blob_len INTEGER;
p_data BLOB;
file_name VARCHAR2 (256);
BEGIN
SELECT blob_content, filename
INTO p_data, file_name
FROM tpx_download_files
WHERE ID = rec_picture.ID;
l_blob_len := DBMS_LOB.getlength (p_data);
l_out_file :=
UTL_FILE.fopen ('/home/oracle/interfaces/out/upld',
file_name,
'wb',
32767
WHILE l_pos < l_blob_len
LOOP
DBMS_LOB.READ (p_data, l_amount, l_pos, l_buffer);
IF l_buffer IS NOT NULL
THEN
UTL_FILE.put_raw (l_out_file, l_buffer, TRUE);
END IF;
l_pos := l_pos + l_amount;
END LOOP;
UTL_FILE.fclose (l_out_file);
EXCEPTION
WHEN OTHERS
THEN
IF UTL_FILE.is_open (l_out_file)
THEN
UTL_FILE.fclose (l_out_file);
END IF;
END;
END LOOP;
END;
2: I have written a PL/SQL process and calling the above procedure on SUBMIT:
DECLARE
l_header_id NUMBER;
l_filename VARCHAR2 (200);
BEGIN
SELECT header_id, filename
INTO l_header_id, l_filename
FROM tpx_download_files
WHERE header_id = :p35_sr_header_id;
trx_blob_to_file (l_header_id);
END;
But it is not writing the file from database to unix server.
If I can get how to make working to write file from database to unix server then I will hopefully can send an attachment.
3; I have given
GRANT EXECUTE ON TPX_BLOB_TO_FILE TO PUBLIC.
And
GRANT EXECUTE ON UTL_FILE TO PUBLIC.
Where I am doing wroung can anyone guide me or any other approach is appreciated.
I am already late so I need soon. Please help.

Answer 1

Hi all,
I need to send the attachment file into the mail. I have a header form in which I have implemented Download/Upload functionality using Apex user guide. When ever a user fill all the entries and submit the form then some field information along with attachment I need to send to the user.
I mean when ever user hit the submit button it should take blob data from my custom table tmp_downlod_files and send to the user as an attachment.
I have searched the post and got lot information but not able to get succeed.
I have implemented java stored procedure for sending automatic mail when user is submitting the form but what I need is to take blob content from database and send as an attachment.
1: So I need to write blob content from custom table to unix server in some location and from there I need to attach that file.
2: the java store which I have implemented for sending automatic mail is working and one argument is attachment which I am passing null for now. So mail is working how to write the file from database to unix server and send as an attachment.
What I did for writing file from database to unix server:
1:
CREATE OR REPLACE PROCEDURE trx_blob_to_file (l_header_id IN NUMBER)
IS
BEGIN
FOR rec_picture IN (SELECT ID
FROM TMP.tpx_download_files
WHERE header_id = l_header_id
AND mime_type LIKE ('image' || '%'))
LOOP
DECLARE
l_out_file UTL_FILE.file_type;
l_buffer RAW (32767);
l_amount BINARY_INTEGER := 32767;
l_pos INTEGER := 1;
l_blob_len INTEGER;
p_data BLOB;
file_name VARCHAR2 (256);
BEGIN
SELECT blob_content, filename
INTO p_data, file_name
FROM tpx_download_files
WHERE ID = rec_picture.ID;
l_blob_len := DBMS_LOB.getlength (p_data);
l_out_file :=
UTL_FILE.fopen ('/home/oracle/interfaces/out/upld',
file_name,
'wb',
32767
WHILE l_pos < l_blob_len
LOOP
DBMS_LOB.READ (p_data, l_amount, l_pos, l_buffer);
IF l_buffer IS NOT NULL
THEN
UTL_FILE.put_raw (l_out_file, l_buffer, TRUE);
END IF;
l_pos := l_pos + l_amount;
END LOOP;
UTL_FILE.fclose (l_out_file);
EXCEPTION
WHEN OTHERS
THEN
IF UTL_FILE.is_open (l_out_file)
THEN
UTL_FILE.fclose (l_out_file);
END IF;
END;
END LOOP;
END;
2: I have written a PL/SQL process and calling the above procedure on SUBMIT:
DECLARE
l_header_id NUMBER;
l_filename VARCHAR2 (200);
BEGIN
SELECT header_id, filename
INTO l_header_id, l_filename
FROM tpx_download_files
WHERE header_id = :p35_sr_header_id;
trx_blob_to_file (l_header_id);
END;
But it is not writing the file from database to unix server.
If I can get how to make working to write file from database to unix server then I will hopefully can send an attachment.
3; I have given
GRANT EXECUTE ON TPX_BLOB_TO_FILE TO PUBLIC.
And
GRANT EXECUTE ON UTL_FILE TO PUBLIC.
Where I am doing wroung can anyone guide me or any other approach is appreciated.
I am already late so I need soon. Please help.