Displaying BLOB value

Question

Hello,
Working on Oracle 10G R2/Windows
There is a way to display BLOB value from SQL*PLUS or other tools?
Thank for your help

Answer 1

from sql*plus you can only display first 32767 character from the blob ,however you can write to file using pl/sql and read that file.
DECLARE
l_file UTL_FILE.FILE_TYPE;
l_buffer RAW(32767);
l_amount BINARY_INTEGER := 32767;
l_pos INTEGER := 1;
l_blob BLOB;
l_blob_len INTEGER;
cursor c1 is SELECT RAWCONTENT FROM BLOCK;
BEGIN
-- Get LOB locator
-- Open the destination file.
l_file := UTL_FILE.fopen('BLOBS','Myfile.lst','w', 32767);
open c1;
loop
fetch c1 into l_blob;
exit when c1%notfound;
l_blob_len := DBMS_LOB.getlength(l_blob);
-- Read chunks of the BLOB and write them to the file
-- until complete.
WHILE l_pos < l_blob_len LOOP
DBMS_LOB.read(l_blob, l_amount, l_pos, l_buffer);
UTL_FILE.put_raw(l_file, l_buffer, TRUE);
l_pos := l_pos + l_amount;
END LOOP;
end loop;
-- Close the file.
UTL_FILE.fclose(l_file);
EXCEPTION
WHEN OTHERS THEN
-- Close the file if something goes wrong.
IF UTL_FILE.is_open(l_file) THEN
UTL_FILE.fclose(l_file);
END IF;
RAISE;
END;
/