How to append the string into blob content

Question

the blob column will have a string with comma separated values which needs to be changed to column wise data and update it back with the existing BLOB content.
string like:-'V,CTMF,1.0,M,ICD-9 to 10 CM,CODE_COMMENTS_UPLOAD,0,A,bsns,2012-04-01,Author,pa admin,Comment,50 Record Map,F,Vascular,C,M'
after i got splitting the values to column wise:
V
CTMF
1.0
M
ICD-9 to 10 CM
CODE_COMMENTS_UPLOAD
0
A
bsns
2012-04-01
Author
pa admin
Comment
50 Record Map
F
Vascular
C
M
finally i need the blob append data output look like below,please do the needful................
blob_value
V,CTMF,1.0,M,ICD-9 to 10 CM,CODE_COMMENTS_UPLOAD,0,A,bsns,2012-04-01,Author,pa admin,Comment,50 Record Map,F,Vascular,C,M
V
CTMF
1.0
M
ICD-9 to 10 CM
CODE_COMMENTS_UPLOAD
0
A
bsns
2012-04-01
Author
pa admin
Comment
50 Record Map
F
Vascular
C
M

Answer 1

actually
my blob column values is:
V,CTMF,1.0,M,ICD-9 to 10 CM,CODE_COMMENTS_UPLOAD,0,A,bsns,2012-04-01,Author,pa admin,Comment,50 Record Map,F,Vascular,C,M
splitting column wise data is:-**
V
CTMF
1.0
M
ICD-9 to 10 CM
CODE_COMMENTS_UPLOAD
0
A
bsns
2012-04-01
Author
pa admin
Comment
50 Record Map
F
Vascular
C
M
now i am appending the string to blob content at the end of the line only like
V,CTMF,1.0,M,ICD-9 to 10 CM,CODE_COMMENTS_UPLOAD,0,A,bsns,2012-04-01,Author,pa admin,Comment,50 Record Map,F,Vascular,C,MVCTMF1.0MICD-9 to 10 CMCODE_COMMENTS_UPLOAD0Absns2012-04-01Authorpa adminComment50 Record MapFVascularCM
but my requirement is should be to append the column wise data to existing blob column as new line like:
V,CTMF,1.0,M,ICD-9 to 10 CM,CODE_COMMENTS_UPLOAD,0,A,bsns,2012-04-01,Author,pa admin,Comment,50 Record Map,F,Vascular,C,M
VCTMF1.0MICD-9 to 10 CMCODE_COMMENTS_UPLOAD0Absns2012-04-01Authorpa adminComment50 Record MapFVascularCM
my procedure:
create or replace
PROCEDURE PR_TEST_BLOB2 IS
RES_BLOB CLOB;
DEST_BLOB BLOB;
SRC_BLOB BLOB;
CURSOR CUR_TEST_BLOB2 IS
SELECT REGEXP_SUBSTR(STR, '[^,]+', 1, LEVEL) FROM (SELECT UTL_RAW.CAST_TO_VARCHAR2(BLOB_VALUE) STR FROM TEST_BLOB2 WHERE TEST_ID=10)
CONNECT BY LEVEL <= LENGTH(STR) - LENGTH(REPLACE(STR,','))+1;
BEGIN
OPEN CUR_TEST_BLOB2;
LOOP
FETCH CUR_TEST_BLOB2 INTO RES_BLOB;
EXIT WHEN CUR_TEST_BLOB2%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(RES_BLOB);
DEST_BLOB:=UTL_RAW.CAST_TO_RAW(RES_BLOB);--converting clob to blob;
SELECT BLOB_VALUE INTO SRC_BLOB
FROM TEST_BLOB2
WHERE TEST_ID = 10 FOR UPDATE;
--move the blob values to source file
DBMS_LOB.APPEND(SRC_BLOB,DEST_BLOB);-- append the blob values
COMMIT;
END LOOP;
CLOSE CUR_TEST_BLOB2;
END;
could you please help me.