File Adapter-handling erroneous files and let channel continue to poll file

Hello,
Even tough there is not an out-of-the-box solution in PI, I'd like to hear your suggestions. When having a file sender communication channel to pick and send files, there are cases where we get errors at the adapter level. These errors are generally due to errors in the file, which will, for example, lead to conversion errors. When this happens, this communication channel will present us an error and will continuously try to pick the erroneous file till we fix the error in that file. Now imagine the situation where in the same folder you have another 1000 files to be picked up and these are all right. Despite this fact, the communication channel will continue to be in an error state till it can process the first file. My question is, what's your generic and standard solution to automatically place this erroneous file in an erroneous folder directory enabling the communication channel to process the other 1000 files?
Thank you for your suggestions.
Goncalo Mouro Vaz

Hi,
As said above...that option need to be utilised in case of error files....
search SDN if need more details...and coming to the second u mentioned that if 1000 files are there for processing and waiting...
if file adapter criteria for processing the file matches and if file is correct then those files will get processed inspite of one error file also...
Hope this clears your queries...
HTH
Rajesh

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Hey Vamsi,
I think you're good to go here. The behaviour is exactly as it should be. The polling interval takes priority when there is no file there but when there is a file there the modification check will take priority over polling interval so it will still wait the mandatory 2 minutes to ensure that no modification is taking place & that's exactly what you want. You don't want to pick up an incomplete file irrespective of when it was put there. So there will always be just over a 2 minute delay (or whatever you set the Msecs value to + a few seconds depending on where the polling cycle is when a file is written out but a max of 2 minutes & 19 seconds delay) when there is a file there but at least you'll have consistent data. If there is no file there the adapter will just poll every 20 seconds until a file arrives.
The 2 minute 'wait' step is exactly that. The adapter will see the file then wait 2 minutes & probably does a timestamp comparison or something. It doesn't do a modification check within those 2 minutes. Having said that, I don't see why you can't reduce the Msecs interval. My reasoning is that you basically want to establish whether it's still being wriiten out before you pick it up. Even if you set it to 5 seconds you should still be able to pickup whether the file is being modified (I'm assuming that the check is doing a timestamp comparison). That will significantly reduce your time wait period.
My assumption on the timestamp comparison was wrong It's actually does a comparison on file size when it reads the data in, see SAP Note (Point 3): [http://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/oss_notes/sdn_oss_bc_xi/~form/handler%7b5f4150503d3030323030363832353030303030303031393732265f4556454e543d444953504c4159265f4e4e554d3d383231323637%7d]
Another suggestion made on the note: Get the writing application to write the file out with an extension different to the one you're polling for. Then, after they have completed writing out the file, they can do a re-name to the extension that you're polling for. That could also speed up things.
Regards, Trevor
Edited by: Trevor Naidoo on Oct 8, 2009 9:38 AM

File adapter don't want to ignore the header row in file

Hi gurus!
In my sender communication channel I specified Document Offset = 1 to spent the first row in file(header)
But it doesn't work.
Do you have any ideas?

Under Document Offset, specify the number of lines that are to be ignored at the beginning of the document.
This enables you to skip comment lines or column names during processing. If you do not make an entry, the default value is zero lines.
http://help.sap.com/saphelp_nw04/helpdata/en/2c/181077dd7d6b4ea6a8029b20bf7e55/frameset.htm
But in Receiver File adapter
NameA.addHeaderLine=0
is used to have no Header line in the target structure
http://help.sap.com/saphelp_nw04/helpdata/en/2c/181077dd7d6b4ea6a8029b20bf7e55/frameset.htm

OracleSOA - File Adapter - Correct mechanism to get the line number from the file

We are using Oracle SOA process to read data from a file, process the data and write it to the database. SOA process is created using Oracle File Adapter to read the data, Oracle BPEL to transform & process the data and Oracle DB Adapter to write the data into the database.
Oracle File Adapter uses native schema to process the fixed length data in the file. The number of rows in the file may exceed more than 500,000, to support processing of large files we use chunk size in the file adapter as 4000 rows. In each read operation, file adapter reads the data that matches to the schema, there might be few rejected rows as well.
Oracle File Adapter property - jca.file.LineNumber gives me only the line number till what line the data is read. Is there any way to get the line number in the xml message, which exactly matches to the line number in the file.?
Flat File Format: (Every file has one header, trailer and multiple data lines),
HEADER02 -
L01
L01
L01
TRAILER02
Line number is one of the crucial requirement in the development of the SOA service, this is used to back trace the information from which source and line the data has come.

Hi Anshul,
Thanks for sharing your thoughts.
I am using DB adapter to insert the data into db.
While doing the xsl transformation I can get the index of the message using position(), but that is not the correct way as there can be rejected lines by the file adapter.
Even if I maintain a local counter variable, it will not consider rejected lines and increment that, which is not correct.
Thanks,
Ravindra

File Adapter-handling erroneous files and let channel continue to poll file

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