Parameter Binding for BLOB field

I would like to find out how I can bind a BLOB field as one of the parameters to an INSERT statement to be passed to an ExecuteSQL call?
I was trying to use the Add function for BLOB field of the OParameterCollection object, but was having problem instantiating the BLOB object itself - getting object not opened error!?!
Would appreciate any advice!
Thanks,
John.

Hi Karuna,
Breakpoint's answer is a bit misleading - there's no need for the parameter ID to appear in SE11. All you need is logic on your screen to utilize the parameter ID. You have two options for that: Either use the field settings in the screen painter (i.e. check the SET field and GET field checkboxes, at least Get field would be required - just seeing the parameter ID is not sufficient) or add some coding to your PBO coding to retrieve upon startup of the screen the value via GET PARAMETER statement (requiring also possibly a SET PARAMETER in the PAI for the field if you want to set it).
Most likely the first approach is what you want. The second is more flexible, but also needs more care to avoid unexpected behavior...
Cheers, harald

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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.
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ACED0005737200136A6
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0000020 3036 3830 3836 453c 464f 3e44 312d 453c
0000040 464f 3e44 6e49 7473 7469 7475 6f69 446e
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infile 'user_data_ext.txt' "str '<EORD>'"
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TEMPLATE blob
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bobmagan,
Thanks for importing your app. Sorry for the late reply. Here's what I've found:
For some reason this download link seems to be tied to the TABLE NAME specified in an Automatic Row Processing process. I created an ARP to process the row instead of using the custom procedure that you wrote to process the record. I specified all the normal stuff in the ARP (i.e., TABLE_NAME, PRIMARY_KEY). After the process was created, I modified the TEMPLATE item source to TEMPLATE:::: w/o error and the download link appeared fine.
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Thanks for your response...
Please correct me if I am wrong.
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Hi,
in fbl5n transaction for the open item (key date) doesnt have parmater id , i need to create parameter id for that field,,,
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pls help

in fbl5n transaction for the open item (key date) doesnt have parmater id
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vavdiyaharesh is online now Add to vavdiyaharesh's Reputation Report Post Edit/Delete Message

I wanted to do something similar, but as you mention, there isn't a lot of sample code to copy and paste etc, and I didn't have the time to spend investigating this one issue when plenty of other things needed my attention.
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So, i have bad news for you : you'll have to rebuild again.
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It is called Data Interface to work with LOB datatypes by APIs designed for use with legacy datatypes. I can specify SQLT_BIN to bind memory binary data to BLOB column, and INSERT or UPDATE directly. It can be without LOB locator and save round-trip to the server. This is very fit my needs, because I have to insert very much BLOBs to server as soon as possible.
I have make a test program, and multi-row with different size blob( less than 65536 bytes) can be insert at one time, without locators. Multi-row wiht same size blob( more than 64K) also can be insert at one time--the alenp parameter is not used. I only can not insert multi-row with different size blob( more than 64k) because the type of alenp is ub2*.
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BLOB fields again...

Hello,
I'm developing an application which has a database table with blob fields. I've had many problems recently with this type of field, the most undesired being that LOV fields doesn't work in pages with BLOB fields.
As a workaround, I've done a second page just to upload the files to the two blob fields. It worked, but now I needed to handle errors with different kind of files and their mime-types. I was happy to see that JHeadstart provided three auxiliary fields to store the filename, size and mime-type. It worked too, it saved all that information correctly, but:
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2. Just after the file is uploaded, I can see in the main table that the attributes were saved correctly, but as soon as I close the browser and open a new session, I have errors. I have two blob columns; in the first, it doesn't shows the filename, but the file size, in the second blob column, it doesn't shows the file name, but the blob mime-type!
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<link destination="DownloadFile.do?pageTimeStamp=ignore&model=TsacContratoUIModel&binding=TsacContratoDocumentoContrato&rowKeyStr=${uix.current.rowKeyStr}&attachment=${TsacContratoDocumentoContratoTamarq}" text="${ui:cond(uix.current.TsacContratoDocumentoContratoTamarq!=null,uix.current.TsacContratoDocumentoContratoTamarq,'DocumentoContrato')}" rendered="${uix.current.TsacContratoDocumentoContrato!=null}"/>
Clearly I can see two things:
1. attachment=${TsacContratoDocumentoContratoTamarq}. I put uix.current inside, as we are in a table, and it worked fine after that.
2. The hyperlink doesn't have the mimeType parameter set, but the respective DownloadFile.do class uses it to set the correct mimeType header. I put it by hand: &mimeType=${uix.current.TsacContratoImagensViewDocumentoContratoMimetype}"
I verified that all the three attributes used to save file information are correct and exists in the VO, in the entity object and in the table, and I've also tested it in the Application Module and also, they save all the information correctly, so I don't think the problem is here, but in the page generation.
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Eduardo

Error while trying to store PDF in Oracle's BLOB field

Hi folks!
I'm having problems while trying to store PDF file in a BLOB field of an Oracle table
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miComando.setBytes(2, bodyIn); //THIS IS THE LINE WHERE THE ERROR IS PRODUCED
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byte[] tmp = new byte[1024];
byte[] data = null;
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int nlen;
nlen = len + sz;
narr = new byte[nlen];
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System.arraycopy(tmp, 0, narr, len, sz);
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Thanx in advance, and looking forward for your comments.

You will probably need to use the setBinaryStream() method instead of setBytes().

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