File adapter polling a folder and accepting a single document at a time?

Hi,
Is it possible to make file adapter read a single file at a time though it is polling a directory that may contain more than one document?
In other words is it possible to make file adapter reading documents sequentially?
Do I need to put a queue to achieve this?
Queue will read the incoming documents and puts the documents to another directory one by ome so that the file adapter picks up only one file at a time?
Thanks,
Sasi Bhushan

Hi,
have you read
http://download-uk.oracle.com/docs/cd/B31017_01/core.1013/b28941/soa.htm#CEGJIDAC
There is explained what concurrency level you can achieve for adapters...

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File Adapter Transactional in SOA and OSb

Hi All,
Is file adapter transactional in SOA and OSB. I have a requirement where a inbound file adapter polls for a file and it is consumed by a topic.If topic is down,how can I know that the same file will goes to topic when is up(how can I make it transactional).I want to do this both in SOA ans OSB.
Any help would be appreciated.
Thanks,
Kumar.

Hi Kumar,
File Adapter itself is NON TRANSACTIONAL...
4.2.9 Nontransactional
The Oracle File Adapter picks up a file from an inbound directory, processes the file, and sends the processed file to an output directory. However, during this process if a failover occurs in the Oracle RAC back end or in an SOA managed server, then the file is processed twice because of the nontransactional nature of Oracle File Adapter. As a result, there can be duplicate files in the output directory.
http://docs.oracle.com/cd/E28280_01/integration.1111/e10231/adptr_file.htm#BABIEBJF
Cheers,
Vlad

File Adapter polls all the files from the directory when deployed again

Hi,
File Adapter polls all the files from the inbound directory irrespective of the timestamp when deployed again.
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But, when BPEL process is modified and deployed again, this time, the file adapter picks up all the files in the inbound directory and doesn't consider the timestamp.
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I guess I can observe the same behavior if I bounce the Application Server also
Do I have an option to achieve this?
Thanks,
Sasi Bhushan.

try this:
1- create a File object for the directory. (look at isDirectory() )
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How to upload a text file from a shared folder and provide an o/p

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Hi all,
I have a script that I use to delete files with a certain file extension in a folder and its subfolders. I would like to enhance to the script by counting the total number of files and their combined size in MB that the script is deleting and use this information
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So you do not know how to write a simple output statement. I think you need to start here:
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Really? So the author of
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I never asked for line-by-line hand holding nor am I someone who wants others to write the entire code for me. Examples of previous scripts that perform similar or partial operations would have been a good way to guide a new user unfamiliar to this topic.
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How to get specific folder and items in the document library sharepoint 2010

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Blitz

This is how you could do it using the server object model -
SPWeb site = SPContext.Current.Web;
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SPQuery query = new SPQuery();
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foreach (SPListItem item in items)
//do whatever you want here
Please "Mark as Answer" if a post has answered your question or "Vote as Helpful" if it was helpful in some way. Here's
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SOA Suite and File Adapter polling

Hi All.
Whenever I have a BPEL process deployed (didn't test whith ESB yet) that uses a file adapter tha polls for files in a directory, my SOA Suite is not able to shutdown properly, and it stops with error when it's time to stop the container that has the BPEL installed.
This is the error message:
There are some errors while stopping the following components. Refer to the generated error report for more details.
==================================================
ias-component: default_group
process-type: oc4j_soa
process-set: default_group
Error Message:time out while waiting for a managed process to stop
==================================================
Looking at OPMN log, I see that the managed process was forcefully shutdown.
Is this an issue, or a normal behavior, or do I have to implement some code in order to stop the BPEL process before shutdown?
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Regards.
Denis

I applied patch 5964097 (OPMN PERFORMS ALWAYS A FORCEFUL SHUTDOWN IN 10.1.3.1) and it seems to solve the problem, at least for the BPEL scenario explained.

File adapter polling and getting the file name 11g Jdeveloper

I am using JDeveloper 11g. My process is something like;
A file adapter reads a XML file
This triggers the BPM process, file content is sent to start activity as message
I have to get the file name that is read by file adapter.
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*************************/

hi,
Like you said.. steps are simple and clearly mentioned in guide.
1. create a variable of type string
2. after configuring the file adapter , go to corresponding receive activity , go to properties tab
3. search for a property with name as jca.file.FileName . This basically keeps track of file name
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HTH,
Ketan

XI file adapter polling faster than poll interval

Hi,
We are facing a issue with the file adapter/authorization of the FTPUSER.
We FTP a server and pick up a file from a particular folder.
My polling interval is 2 minutes
My retry interval is space.
Processing mode : ARCHIVE
We are archiving it on a Network attached server(NAS) mounted on our XI server.
When XI polls for the first time it picks up the file but the sender file adapter shows following error in RWB.
2006-01-20 11:31:08 GMT: Error: Deleting of file 'ARUCSjnewb80.txt' failed - cannot proceed: FTPEx: ARUCSjnewb80.txt: Access is denied.
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After this the file gets archived thrice in the archive directory and then gets deleted from the source directory.
We are unable to understand why XI is polling again after few seconds of the first poll.(As per my understanding it should have polled after 2 minutes).
I am able to delete the file manually from the Ftp server.
Could anyone give a pointer towards what we are missing or what probable reasons could be?
authorization issue?( XIADM /ftpuser have full authorization)
Some adapter setting?
Regards,
Sulakshana

Hi,
Could you let me know how frequent the file gets loaded to the FTP server.
Is your file size too large to get loaded.. If so try to increase the polling interval. Also make sure that you have provided the polling time in sec and not in minutes...i.e for 2 minutes it should have been specified as 120 sec as polling interval
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Nithiyanandam

Problem with file adapter polling on Unix

Hi everybody,
I'm trying to run my BPEL process with receive activity of File adapter partner link. Everything is working OK on Windows file system - folder polling is set correctly and when the new file appears and is at least 2 minutes old, the process starts. But when I try to run the process on the UX server with BPEL (folders are changed to the correct values as '/home/myfolder', rights for this folder are set to RWX for everybody and process is deployed successfully to the appropriate domain) nothing is done when the new file appears in the folder.
I really don't know, where is the problem. Any hint from you?
Thanks,
Milan K.

Hi Suraj,
From The Note ``
"lock" option:- This is the option that is almost similar to the above; The key difference being in very rare circumstances, the first option may still allow channels to be run on both server nodes. When this option is set, file adapter acquires a enqueue service lock. Lock is taken on channel object and it is exclusive and non-cumulative such that no second message(even it is from the same channel) can fetch the files from configured FTP/File directories unless and until first message has completed(success/fail) its processing.
This is exactly my requirement.
but when I see the end time of the message its they are withing second only as
14:02:38     14:02:39
14:02:48     14:02:48
14:02:58     14:02:58
14:03:08     14:03:08
14:03:18     14:03:18
14:03:28     14:03:28
14:03:38     14:03:38
14:03:48     14:03:48
14:03:58     14:03:58
14:04:08     14:04:08
14:04:18     14:04:19
14:04:28     14:04:29
14:04:38     14:04:39
14:04:49     14:04:49
14:04:59     14:04:59
14:05:09     14:05:09
14:05:19     14:05:19
14:05:29     14:05:29
14:05:39     14:05:39
14:05:49     14:05:49
14:05:59     14:05:59
14:06:09     14:06:09
14:06:19     14:06:19
14:06:29     14:06:31
14:06:39     14:06:40

File adapter polls before the processing is finished in R3

Hi,
Polling in sender file adapter is set as 4 secs. The problem arises when more than one files with same Service Order number are uploaded and the corresponding IDOCs are simultaneously received in R3 system. As one IDOC is already processing the Service Order, the other IDOC fails as the Service Order is already being processed.
Kindly suggest if there is a way to resolve this issue.
Regards
Pravesh

Hi,
Check below link:
File adapter should pick a single file at a time
can file adapter pick files sequentially
Amol
Edited by: AMOL BHARTI on Apr 14, 2010 11:38 AM

Receiver File adapter : two choices "Directly" and "Use Temporarly file" ?

Hi All,
I am writing the file into a folder and I want to write the file completely into the folder.Once the file is placed , one tool will be keep on picking files every second from this folder.So I need to put the file after filling entire data.
In the File adapter, the put file option has two choices "Directly" and "Use Temporarly file".
"Directly" option will serve my purpose?
Which option I need to keep for Empty-Message Handling "Write Empty file" or "Ignore"?
Thanks
Seema

Hi Mohamad,
>> You need to place in the some other folder and do the transfer completely and move the file to desired location using command line parameters as recommended in the previous answers.
I will be posting all the files as .txt files. Can we move the file by using command line parameters for FTP connection?
I heard that we can get do it only for NFS and we cannot do for FTP connection.?
Can you please suggest the command line how to use it.
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Seema

File adapter polling stops after reboot of third party system

Hi,
We noticed that whenever we reboot our third party system, XI File Adapter is losing it's connection to that third party system and polling stops. As a result File Adapter is not processing any files from that particular server.
To fix this problem, we either reboot XI Server or refresh communication channel (Go to change mode and save it).
File adapter is configured to use FTP to transfer the files between Windows Server and Unix Server.
Is there a better way to fix this problem?
Thanks in advance.
Regards
Chandu

Hi,
Make the connect mode as PER FILE TRANSFER in the file adapter.
Connect Mode
Permanently
An existing connection to the FTP server is used permanently.
The connection is reestablished automatically if it is closed by the server.
Per File Transfer
A new connection to the FTP server is established for each file transfer.
http://help.sap.com/saphelp_nw04/helpdata/en/e3/94007075cae04f930cc4c034e411e1/content.htm
Regards,
Bhavesh

Need file adapter polling with read operation to be triggered by a BPEL without using synchronous read

The scenario is:-
Web Service Client -->input-->BPEL-->if input valid-->trigger file adapter with read operation--> receive file
i am not able to stop the polling until it is required to trigger the polling.
As soon as i deploy the composite the file adapter starts polling without waiting for input.
Since i am using two receive activities, the second one which is suppose to receive file from file adapter is always showing pending state. (asynchronous callback)

Hi there,
IMHO the traditional read is used only as inbound operation, that means
that it starts polling the input folder as soon as the composite gets
deployed - which is the same you are experiencing.
In your case you need an outbound operation that needs to be invoked at
a certain moment. I don't know what are the reasons not to use sync
read, but this is the only outbound read operation supported by the
adapter. If you can not use the sync read, then you would have to design
some custom solution where you call a web service or EJB for instance
that reads the desired files.
Another option I can think of, though have not use personally is using
the adapters programatically in Java - take a look at this blog post as
it seems related to this topic -
https://technology.amis.nl/2012/01/22/using-the-oracle-weblogic-technology-adapters-with-custom-java-message-driven-bean-mdb-triggered-by-file-adapter-part-of-the-story/.
Hope this helps,
A.

File adapter polling a folder and accepting a single document at a time?

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