Question: releasing value of BLOB field

Hello, I'm using EclipseLink 2.0.
I have an entity with @BLOB field, which is lazy loaded. After I update or persist an instance of the entity, I don't need the BLOB field value, because I need the memory to be free.
Can I make the BLOB field uninitialized without entity's refresh (as if the object is just queried)? Or the only way is to refresh the entity?

Refresh is the only public way.
There is an internal way, get the FetchGroup from the object and remove the blob attribute name from it (or set a new FetchGroup if null), then just null out the blob.
The class will be weaved to implement FetchGroupTracker, which provides the API to get and set the FetchGroup (or you can use the descriptor's FetchGroupManager).
James : http://www.eclipselink.org

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thank you
sal

See this link
http://www.psoug.org/reference/dbms_lob.html

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declare
path varchar2(100);
file varchar2(50);
begin
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file:='C:\myfile.pdf';
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Hi Mohana,
Your problem is probably spacing. Try this:
declare
path varchar2(100);
file varchar2(50);
begin
path:='C:\program files\adobe\acrobat 4.0\reader\AcroRd32.exe ';
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null

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I tried to use standalone Data Migration several years ago to move a database from MySQL to Oracle. At that time it was unable to migrate blob fields. I am trying again, hoping this issue might have been fixed in the mean time. That does not appear to be the case. The rows in question have a single BLOB field (it is a binary encoding of a serialized Java object, containing on the order of 1-2K bytes, a mixture of plain text and a small amount of non-ASCII data which is presumably part of the structure of the Java object). The mysqldump appears to correctly store the data, surrounded by the expected <EOFD> and <EORD> separators. The data as imported consists of a small (roughly 1-200) ASCII characters, apparently hex encoded, because if I do a hex dump of the mysqldump I can recognized some of the character pairs that appear in the blob field after import. However, they are apparently flipped within the word or otherwise displaced from each other (although both source and destinations machines are x86 family), and the imported record stops long before all the data is encoded.
For example, here is a portion of the record as imported:
ACED0005737200136A6
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0000000 3633 3838 3037 3c39 4f45 4446 303e 3131
0000020 3036 3830 3836 453c 464f 3e44 312d 453c
0000040 464f 3e44 6e49 7473 7469 7475 6f69 446e
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Here is the ctl code:
load data
infile 'user_data_ext.txt' "str '<EORD>'"
into table userinfo.user_data_ext
fields terminated by '<EOFD>'
trailing nullcols
internal_id NULLIF internal_id = 'NULL',
rt_number "DECODE(:rt_number, 'NULL', NULL, NULL, ' ', :rt_number)",
member_number "DECODE(:member_number, 'NULL', NULL, NULL, ' ', :member_number)",
object_type "DECODE(:object_type, 'NULL', NULL, NULL, ' ', :object_type)",
object_data CHAR(2000000) NULLIF object_data = 'NULL'
)

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Hi,
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DECLARE
xmlstr BLOB;
warn VARCHAR2(400);
v_file Utl_File.file_type;
line_buf RAW(32767);
maxbufsize BINARY_INTEGER := 32767;
amount BINARY_INTEGER;
offset BINARY_INTEGER;
dir varchar2(50) := 'XMLP_DIR';
filename varchar2(50) := 'JPARK_TEST.rtf';
bsize NUMBER;
BEGIN
v_file := utl_file.fopen(dir,filename,'wb',maxbufsize);
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utl_file.put_raw(v_file,line_buf, TRUE);
offset := offset+amount;
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--Dbms_Output.put_line(offset);
END LOOP;
utl_file.fclose(v_file);
EXCEPTION
WHEN OTHERS THEN
UTL_FILE.FCLOSE_ALL;
DBMS_OUTPUT.PUT_LINE('WHEN OTHERS');
dbms_output.put_line(substr(sqlerrm,1,254));
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IMAGE BLOB,
IMAGE_NAME VARCHAR2(50)
load image
CREATE OR REPLACE PROCEDURE load_file ( p_id number, p_photo_name in varchar2) IS
src_file BFILE;
dst_file BLOB;
lgh_file BINARY_INTEGER;
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INSERT INTO photos (imageid, image_name, image)
VALUES (p_id , p_photo_name, EMPTY_BLOB())
RETURNING image INTO dst_file;
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FROM photos
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Photo BLOB;
v_amt NUMBER DEFAULT 4096;
v_off NUMBER DEFAULT 1;
v_raw RAW(4096);
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owa_util.mime_header('images/jpg');
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Problem with ojdbc14.jar (oracle10g Rel. 2 driver) in updating a BLOB field

Hello All,
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// For column ORIGINAL_CONTENT
byte[] tempbyteArray;
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if(tempbyteArray != null) {
pstmt.setBinaryStream(25,new java.io.ByteArrayInputStream(tempbyteArray),tempbyteArray.length);
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Thanks & Regards,
-Sunitha

I have similar problem and I solved it using ojdbc14.jar oracle9i version.
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Sorry for the size of the text and also for my english.
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SQL> create or replace trigger trg1 after insert on test_blob for each row
2 begin
3 insert into test_blob2 values (:new.a);
4 end;
5 /
Trigger created.
SQL> insert into test_blob values ('123456789');
1 row created.
SQL> desc test_blob;
Name                                      Null?    Type
A                                                  BLOB
SQL> desc test_blob2
Name                                      Null?    Type
A                                                  BLOB
SQL>
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DBMS_LOB.GETLENGTH(A)
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Experts -
Is there any way that we can read the data from BLOB fields of data base table column in Endeca 3.0 ?
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Thank you,
Ranish

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We will give you reward points!
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L   U                                  0 DAY         390.00 USD       1 DAY

Contract Release Value is not updated with Confirmation or Invoice value

The release value for a contract in SRM EBP shows the value of purchase orders created using that contract. It does not take into account confirmation and/or invoice values.
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Please could you confirm the correct functionality and how I could find out the the true invoice value of purchases made using a contract?

Hi
Which SRM and R/3 versions are you using ?
Meanwhile, please go through the following SAP OSS Notes, which will help in this case ->
Note 622045 Net value in release overview of contract is incorrect
Note 493519 Release quantities are not updated
Note 1108322 BBP_CONTRACT_CHECK wrong calculation of values
Note 1102886 Contracts: Lesser Field length for Target Value
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Note 703771 Resetting release values during purchase order item deletion
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Note 519879 BBP_CTR_MAIN: No message when values in Contract are reset
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Note 528897 Documents not displayed in contract release order overview
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Note 491993 Entry of contracts with target values
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Note 398168 Purchase contract: Target value is not changed
Do let me know.
Regards
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Question: releasing value of BLOB field

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