How to find the broken blob data

Hello

I am using oracle 10G express edition and Oracle Apex 4.1 front-end, have created a table with structure below.

> > CREATE TABLE 'HR_EMPLOYEE_DETAILS '.
> > ('ID' NUMBER ENABLE NOT NULL,)
> > 'HR_ID' ENABLE NUMBER NOT NULL,
> > 'PHOTO_BLOB' BLOB,
> > "MIME_TYPE" VARCHAR2 (64)
(> >)

I wrote a program sqlloader to load all the images in the table above, there are a few rows of data where the photos have not get uploaded, which shows the user but photo id is empty, how to identify such lines. Please suggest me

Thank you
Sudhir

Your photo_blob column can have NULL values, in this case you can find them with something like:

select id
  from hr_employee_details
 where photo_blob is null

Or the photo_blob was filled with a LOB Locator is valid but contains no data. These cases can be found with something like:

select id
  from hr_employee_details
 where dbms_lob.getlength(photo_blob) = 0

Or you could have a case where some of the bytes actually enter the blob, but not all resulting in an invalid image. Who is going to be more difficult, try so the other two cases first ;-)

Tags: Database

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Help, please.

Concerning

S.Garewal
This is what happens when you copy a code without understanding.
Take a look at the code here
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For the first time it's good reading but your position and the quantity is not initialized when you loop and read again and is not read correctly.

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