Using dbms_lob to load image into table

Question

I am trying to load a set of images from my DB drive into a table. This works fine when I try to load only 1 record. If I try to load more than 1 record, first gets created but I get this error, and it doesn't load the images for the rest of them.
ORA-22297:     warning: Open LOBs exist at transaction commit time
Cause:     An attempt was made to commit a transaction with open LOBs at transaction commit time.
Action:     This is just a warning. The transaction was commited successfully, but any domain or functional indexes on the open LOBs were not updated. You may want to rebuild those indexes.
Am I missing something in the code that's needed?
in_file UTL_FILE.FILE_TYPE;
bf bfile;
b blob;
src_offset integer := 1;
dest_offset integer := 1;
CURSOR get_pics is select id from emp;
BEGIN
FOR x in get_pics LOOP
BEGIN
insert into stu_pic(id,student_picture)
values(x.id,empty_blob()) returning student_picture into b;
l_picture_uploaded := 'Y';
bf := bfilename('INTERFACES',x.student_id || '.' || p_image_type);
dbms_lob.fileopen(bf,dbms_lob.file_readonly);
dbms_lob.open(b,dbms_lob.lob_readwrite);
dbms_lob.loadBlobFromFile(b,bf,dbms_lob.lobmaxsize,dest_offset,src_offset);
dbms_lob.close(b);
dbms_lob.fileclose(bf);
EXCEPTION when dup_val_on_index then null;
END;
END LOOP;
END;

Answer 1

There are two methods you can use.
1. Create an external table with those images(BLOB column) and then use that external table to insert into another table.
Demo as follows:
This is my pdf files
C:\Saubhik\Assembly\Books\Algorithm>dir *.pdf
Volume in drive C has no label.
Volume Serial Number is 6806-ABBD
Directory of C:\Saubhik\Assembly\Books\Algorithm
08/16/2009  02:11 PM         1,208,247 algorithms.pdf
08/17/2009  01:05 PM        13,119,033 fci4all.com.Introduction_to_the
d_Analysis_of_Algorithms.pdf
09/04/2009  06:58 PM        30,375,002 sedgewick-algorithms.pdf
               3 File(s)     44,702,282 bytes
               0 Dir(s)   7,474,593,792 bytes free
C:\Saubhik\Assembly\Books\Algorithm>This is my file with which I'll load the pdf files as BLOB
C:\Saubhik\Assembly\Books\Algorithm>type mypdfs.txt
Algorithms.pdf,algorithms.pdf
Sedgewick-Algorithms.pdf,sedgewick-algorithms.pdf
C:\Saubhik\Assembly\Books\Algorithm>Now the actual code
SQL> /* This is my directory object */
SQL> CREATE or REPLACE DIRECTORY saubhik AS 'C:\Saubhik\Assembly\Books\Algorithm';
Directory created.
SQL> /* Now my external table */
SQL> /* This table contains two columns. 1.pdfname contains the name of the file
DOC>   and 2.pdfFile is a BLOB column contains the actual pdf*/ 
SQL> CREATE TABLE mypdf_external (pdfname VARCHAR2(50),pdfFile BLOB)
  2         ORGANIZATION EXTERNAL (
  3           TYPE ORACLE_LOADER
  4            DEFAULT DIRECTORY saubhik
  5            ACCESS PARAMETERS (
  6              RECORDS DELIMITED BY NEWLINE
  7              BADFILE saubhik:'lob_tab_%a_%p.bad'
  8              LOGFILE saubhik:'lob_tab_%a_%p.log'
  9              FIELDS TERMINATED BY ','
10              MISSING FIELD VALUES ARE NULL
11               (pdfname char(100),blob_file_name CHAR(100))
12              COLUMN TRANSFORMS (pdfFile FROM lobfile(blob_file_name) FROM (saubhik) BLOB)
13            )
14            LOCATION('mypdfs.txt')
15         )
16         REJECT LIMIT UNLIMITED;
Table created.
SQL> SELECT pdfname,DBMS_LOB.getlength(pdfFile) pdfFileLength
  2  FROM   mypdf_external;
PDFNAME                                            PDFFILELENGTH
Algorithms.pdf                                           1208247
Sedgewick-Algorithms.pdf                                30375002
SQL> Now, you can use this table for any operation very easily. Even for your loading into another table!.
2. Use of DBMS_LOB like this
/* Loading a image Winter.jpg in the BLOB column as BLOB!*/
DECLARE
  v_src_blob_locator BFILE := BFILENAME('SAUBHIK', 'Winter.jpg');
  v_amount_to_load   INTEGER := 4000;
  dest_lob_loc BLOB;
BEGIN
  --Insert a empty row with id 1
  INSERT INTO test_my_blob_clob VALUES(1,EMPTY_BLOB(),EMPTY_CLOB())
   RETURNING BLOB_COL INTO dest_lob_loc;
  DBMS_LOB.open(v_src_blob_locator, DBMS_LOB.lob_readonly);
  v_amount_to_load := DBMS_LOB.getlength(v_src_blob_locator);
  DBMS_LOB.loadfromfile(dest_lob_loc, v_src_blob_locator, v_amount_to_load);
  DBMS_LOB.close(v_src_blob_locator);
  COMMIT;
--id=1 is created with Winter.jpg populated in BLOB_COL and CLOB_COL is empty.  
END;Now user this code to create a procedure with parameter and use that in loop.