Blob column type question

Hello all,
We are storing some images in Oracle 9i as BLOB type. The actual size for most of them is about 150K (0.15MB). However, when the upload is complete the size of each file in db is approximately 3.5 MB. Is something is wrong with table definition/storage?
Thank you,
Sonya

Mark,
here are my answers:
What is the full Oracle version? 9i
What is the table definition?
IMAGE_NO     NOT NULL     NUMBER(12)
IMAGE_PAGE     NOT NULL     NUMBER(3)
IMAGE_NAME     NOT NULL     VARCHAR2(50)
IMAGE_DATA          BLOB
What is the tablespace extent management method in use and parameters?
HEADER_FILE     12
HEADER_BLOCK     331939
BYTES     458752
BLOCKS     56
EXTENTS     7
INITIAL_EXTENT     65536
NEXT_EXTENT
MIN_EXTENTS     1
MAX_EXTENTS     2147483645
How are you measuring the size of the LOB after loading? used this function dbms_lob.getlength(image_data)
Edited by: sonya795 on Aug 25, 2008 4:18 PM

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I have a question for you: Inserting Word document in BLOB column

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Edited by: abdul moyed on Feb 3, 2011 6:33 PM

http://decipherinfosys.wordpress.com/2007/11/21/moving-lob-column-to-a-different-tablespace/
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If I understand correctly, your requirements needs to be broken down into two problems:
1) click link that pops up a window displaying a new APEX page
2) an APEX page the displays the document, not downloads it.
I haven't done #1 (yet).
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This has a related question, but no answer yet:
open pdf in popup browser window
The key is target="_blank" for the anchor tag.
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If that doesn't work, a Dynamic Action that does some magical JavaScript stuff may be needed.
For #2, I lost the URL that showed how to display a PDF as part of a "form" page.
From what I remember:
Start with a blank page with one blank HTML region (all the Items go in the HTML region)
Add an Item for the PK/Doc_ID
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- Storage Type "BLOB column specified in Item Source" (and place the column name of the BLOB there)
- MIME Type Column: (column name) -- since you have multiple types, this is a MUST HAVE
- Filename Column: (column name) -- I highly recommend you have this.
- Content Disposition == INLINE <-- this is the kicker
Also, you will need a Browser Plugin for each of the MIME Types (otherwise, the browser may try to 'download' the file)
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ORA-00904: "CUSTOMER2"."Temp_Name": invalid identifier
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SQL>Alter table CUSTOMER2 ADD Temp_Name BLOB;
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0.74 seconds
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Hello Robert,
first, I don't see which part of your question concerns APEX. There is {forum:id=75} where you probably get best input for your problem.
Anyhow, just a few things you might think about before posting there.
I am trying to change a VARCHAR(2) data type into a BLOBI'm not sure if you really want this to be a BLOB. Ususally, if text fields get too small, you'd use CLOB. Again, I'd guess the 4000 bytes you can easily store in a VARCHAR2 (not VARCHAR(2), right? this would be a two byte text field) would be sufficient for what I would expect to find in a column named "Cust_Firstname".
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If I understood you right, you want to transfer the value from "Cust_Firstname" (which is VARCHAR2) to "Temp_Name", which you created as BLOB. You should change the order in the update statement then.
-Udo

BLOB Columns Inserts/Updates ???

Please let me know how SQL*Loader can run updates to just the blob columns without truncation/replace. We want to do incremental updates to the BLOB column without truncation/replace. If this is not possible please let me know any other process which can do this with the best performance we have huge amount of data that needs to be processed. Please let me know .......
e-mail from the developer.
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Handle:      user01
Status Level:      Newbie
Registered:      Jun 10, 2004
Total Posts:      252
Total Questions:      28 (24 unresolved)
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