Polling in file adapter

Hi All,
i am trying to poll 2 files with the help of file adapter in 2 different proxy service in osb.
my requirement is 2nd file polling will not start untill 1st adpater sucessfully polled the 1st file present in that folder.
please let me know how can we apply wait for the 2nd polling file ...!!
Thanks & Regards,
Ajay

Check this out -
Oracle JCA Adapter for Files/FTP - 11g Release 1 (11.1.1.6.3)
4.2.13 File-Based Triggers
You can use the Oracle File and FTP Adapters, which provide support for file-based triggers, to control inbound adapter endpoint activation. For information about how to use file-based triggers, see Section 4.3.1.4, "File Polling."
Using Trigger Files
By default, polling by inbound Oracle File and FTP Adapters start as soon as the endpoint is activated. However, to obtain more control over polling, you can use a file-based trigger. Once the Oracle File or FTP Adapter finds the specified trigger file in a local or remote directory, it starts polling for the files in the inbound directory.
For example, a BPEL process is writing files to a directory and a second BPEL process is polling the same directory for files. To have the second process start polling the directory only after the first process has written all the files, you can use a trigger file. You can configure the first process to create a trigger file at the end. The second process starts polling the inbound directory after it finds the trigger file.
The trigger file directory can be the same as the inbound polling directory or different from the inbound polling directory. However, if your trigger file directory and the inbound polling directory are the same, then you should ensure that the name of the trigger file is not similar to the file filter specified in the Adapter Configuration page shown in Figure 4-21.
The content of a trigger file is never read and therefore should not be used as payload for an inbound receive activity.

Similar Messages

Polling by file adapter (sender) with FIFO functionality

Hi,
here are one question:
What happen if, for example, the sender system generates multiple files with the same timestamp (HH:MM:SS), or the file adapter on XI is stopped for a moment, and then, when activated, in the source directory (polling directory) there are many files? How can XI handle the correct sequence of messages? Is this impossible. How XI poll on a file (sender) - what is the logic? The files should be polled by FIFO.
Thanks in advance.
Regards
Frank

Hi,
There is a logic called EOIO. Its exactly once in Order (EOIO). It takes care of all these iisues. Also XI gurantees the delivery of files.
Refer these links
http://help.sap.com/saphelp_nw04/helpdata/en/e3/94007075cae04f930cc4c034e411e1/content.htm
Regards
Aashish Sinha
PS ; reward points if helpful

BPM to get rid of polling for file adapter

Hello,
nice scenario here:
We want to trigger a scenario for file to file transfer via an aRFC to be independent from the polling.
Looks like this needs a BPM, which could be started via an aRFC (save e.g. the content of the RFC in a directory on the XI machine if necessary).
But how to trigger now the sender adapter to pick up the prepared file (no relation to the content coming with the RFC) to deliver it?
Looks like we do not really understand how to use the BPM? Any idea to solve that is welcome!
Best regards
Dirk

Hi Dirk,
take a look at this weblog by siva:
/people/siva.maranani/blog/2005/05/22/schedule-your-bpm
schedule your BPM and then you can use pooling
for the file adapter cause the message will stay in BPM
and you can control from the BPM
Regards,
michal

Polling using File Adapter in BPEL

My requirement is to constantly poll a directory location using file adapter for a particular filename. If the file is found then pick the file else continue polling.
Any thoughts on the approach is appreciated.

Refer the below, File adapter is capable of doing that.
http://docs.oracle.com/cd/E23943_01/integration.1111/e10231/adptr_file.htm#CIAHDAEB
for File Polling refer *4.3.1.4 File Polling* section
*7) Give points - it is good etiquette to reward an answerer points (5 - helpful; 10 - correct) for their post if they answer your question.*
Thanks,
Vijay

Restricting polling in sender file adapter

Hi friends,
I have a requirement where I need to poll a file from an FTP server. But, if the file is being edited (some other application is writing to it) I need to avoid picking that file. Plz tell me how i can achieve this...waiting for ur replies.
Regards,
Shilpa

Shilpa,
Check out this sap note :
[https://websmp230.sap-ag.de/sap(bD1kZSZjPTAwMQ==)/bc/bsp/spn/sapnotes/index2.htm?numm=821267|https://websmp230.sap-ag.de/sap(bD1kZSZjPTAwMQ==)/bc/bsp/spn/sapnotes/index2.htm?numm=821267]
File Locking / Incomplete Processing
Q: I sometimes observe that files are processed only partially, i.e., only a fragment from the file's start is converted into an XI message. Nevertheless, the file is usually archived completely. Does the File Sender Adapter honor if another process has locked a file for exclusive use?
A: Unfortunately, the J2EE 1.3 technology the File Adapter is built upon does not support file locking. This limitation affects the File Adapter's operation. Depending on whether the JRE implementation for the operating system under which the adapter runs uses mandatory file locking or advisory file locking, opening a file that is currently being written to by another process will fail or not.
If opening the file fails, no problem exists and the adapter will try to open the file each poll interval until it succeeds.
However, if opening the file is not prevented by the operating system, the adapter starts to process the file although it is still being modified. Since XI 3.0 SP11 / PI 7.0 there is a parameter named "Msecs to Wait Before Modification Check" in the advanced settings of the File Sender channel configuration to work around this issue. This setting causes the File Adapter to wait a certain time after reading, but before sending a file to the Adapter Engine. If the file has been modified (which is basically determined by comparing the size of the read data with the current file size of the input file) after the configured interval has elapsed, the adapter aborts the processing of the file and tries to process the file again after the retry interval has elapsed.
If this option is not available for the settings you would like to use, the following algorithm (to be implemented in your application) may be used to ensure that the File Adapter only processes completely written files:
Create the file using an extension, which does not get processed by the File Adapter, e.g., ".tmp"
Write the file content
Rename the file to its final name, so the File Adapter will notice its existence and pick it up
Hope this will help.
Thanks,
Nilesh

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.
The picked up file gets processed but at the same time just within 12-13 seconds of the first poll XI picks up the file second time and then in another 3 seconds for the third time.
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
Regards,
Nithiyanandam

FTP/File adapter issue (polling one file at a time)

Hi,
I have come across an interesting scenario. I have a folder in which many files are placed at once (around 20+).
In my adapter I need such a logic that whenever file adapter polls the directory, it should only pick one file, wait for the specified time (in PollingFrequency interval or maybe some other way) and then poll the next file. Right now it polls all the files in one go.
Is there any property that I can use or any other logic that can help me achieve this?
Thanks.

Hi, You can use MaxRaiseSize property. Set its value to 1.

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.
For ex. when the BPEL process with file adapter is deployed, it starts polling the directory based on the timestamp as and when the directory is written with the files. I did not opt for deleting the files after read by the File Adapter.
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.
My guess is that it should not pick all the files but based on timestamp only.
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() )
2- create a File[] that represents the files in that directory. (.listFiles())
3- if (file[x].isDirectory()) {recursive method call;}
4- else {
process file;
If you want more help--do some work on it, and come back with specific questions relating to specific lines in your code and specific error messages you've been receiving.

File adapter polling frequency is not consistent in SOA 10g!

Friends,
I have used file adapter for polling files in a service in SOA 10G env. with polling frequency 3600 secs. However, i have noticed file polling is not happening at 60 mins interval, instead some times files getting polled in less than 30 mins but again after sometime its polling correctly in 60 mins interval. I am not sure what could be the reason but i need a solution urgently. Please help!

Could be the managed servers in the cluster are not in sync.
I faced DB JCA adapter sync issues because of Oracle soa suite bug.
You could check whether any sync issues are there with File adapters.

Polling interval in file adapter.

Hi,
I have a doubt regarding the file adapter polling interval.
Suppose we get a file of size 512 MB and PI file adapter taking long time (say 15 Min) to process it, we have a polling interval of 10 min.
I have a 2 doubt in this case.
1. what will happen in the next polling interval. because the older file still is in process and it is still in the source folder location.
2. if at the same time there is new file get places in same folder location. then how the file adapter behave in this case. Is it start picking the second file or again poll the incomplete file.
I want to know that is PI maintaining some lock while processing some file from source folder.
regards,
Navneet

Hi,
I guess normally it should process both files, earlier one which is in process and the new one as well (it depends your selection string in file name scheme).
Also refer thsi Wiki to help in avoiding duplicate file processing:
http://wiki.sdn.sap.com/wiki/display/XI/DifferentwaystokeepyourInterfacefromprocessingduplicate+files
Regards,
Divyesh Vasani

Sender File adapter stops polling

Hi All,
We have a strange issue. A sender File (NFS) communication channel which was working fine, suddenly stops polling.
The cache, is upto date. There are no errors in the channel monitoring. In fact the polling logs are being recorded in the RWB showing successful polling. But the channel does not pick up the file which is lying in the file location. Channel has been working fine till then.
Finally we had to create a new communication channel with the same configuration which picked up the file instantly.
Is this a known issue with File adapter and is there a solution to prevent this situation from happening.
Regards,
Sathya

In fact the polling logs are being recorded in the RWB showing successful polling. But the channel does not pick up the
file which is lying in the file location. Channel has been working fine till then
Did you checked if the adapter was locked out? Normally this is the reason....happens with FILE and JDBC....channel shows successfully processed but there is no message that is actually passed.
Needs to unlock the adapter from VA....SAP Note available mentioning this problem.
Regards,
Abhishek.

File adapter : Do not poll if directory does not exist

Hi people !
I have a BPEL process that takes files as Input messages.
I use a file adapter to do that.
It works well but I would like to avoid polling the directory if it does not exist, do you know how to control if the directory actually exists ?
Here is the File Adapter configuration :
<jca:operation
PhysicalDirectory="PhysDir"
ActivationSpec="oracle.tip.adapter.file.inbound.FileActivationSpec"
PhysicalArchiveDirectory="ArchiveDirl"
DeleteFile="true"
IncludeFiles=".*\.xml"
PollingFrequency="30"
MinimumAge="0"
OpaqueSchema="false" >
</jca:operation>
Even if the directory does not exist, the process endlessly tries to poll that directory.
Thanks in advance,
Romain.

I do agree with you that the directory should exist because the adapter was configured to poll on that directory !!
Nevertheless, I would like to know how to control its existence before polling...
Romain.

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

Sender file adapter not polling the file

hi all,
i have configured a filexifile scenario....
but the file sender adapter is not polling the file at all....
i dont c any message either in RWB or in SXMB_MONI
i checked the adapter framework url at http://<ximachine>;<port>/AdapterFramework....and the status for the file adapter is green...
but the message it gives there is
Sender Adapter v1014 for Party '', Service 'TASL_FILE_SENDER':
Configured at 03:07:24 2006-02-02
Up and running - no message processing until now
last poll interval started 04:01:24 2006-02-02
length 60,000 secs
y is the sender adapter not polling the file..
i am using NFS as my File System....i gave the source directory as d:/test_dir/
is this way of specifying the source directory on a windows machine correct...
thanks
pavan

There is probably something wrong with the File Adapter. You will need to go to the RunTime Workbench >> Component Monitoring >> Display >> Click on the Adapter Engine >> More information will display and click on the button 'Adapter Monitoring' >> A new window will display and click on the arrow next to your adapter engine. This displays a list of adapters running on your system. Green light means good; Red, you have a configuration problem. Look at the error and try and resolve it.

Sender File Adapter always "Polling interval started" without complete

Hi,
I have problem with sender file adapter suddenlty the status from Communication Channel Log monitoring always with polling started without completed.
4/25/11 11:40:33 AM   Polling interval started. Length: 10.0 seconds
4/25/11 11:40:23 AM   Polling interval started. Length: 10.0 seconds
4/25/11 11:40:13 AM   Polling interval started. Length: 10.0 seconds
4/25/11 11:40:03 AM   Polling interval started. Length: 10.0 seconds
Normal :
4/25/11 11:41:50 AM   Polling interval started. Length: 10.0 seconds
4/25/11 11:41:50 AM   Processing finished successfully
4/25/11 11:41:50 AM   Processing started
4/25/11 11:41:40 AM   Polling interval started. Length: 10.0 seconds
4/25/11 11:41:40 AM   Processing finished successfully
4/25/11 11:41:40 AM   Processing started
I have tried to stop and start the channel but still no luck. This problem only happen for this particular communication channel others channel is working fine.
Please advise other solution before i need to restart the java engine since this in the production environment. The problem is some of the process was delayed because this issue. CC was delayed to pickup the file.
Thank You in advance.
FL

Hi Abhistek,
Thank you for your correction. It was typo.
Which assumption is correct ?
1. All 3 instance running together in the same time ? or
2. Either 1 of the instance running once time manage by clustering setting.
Example :
15:01:00   ---> A
15:02:00 -
> A
15:03:00 -
> B
15:04:00   -
> B
Currently :
15:01:00   -
> A
15:01:00   -
> B (lock)
15:02:00 -
> A
15:02:00 -
> B (lock)
It seems all 3 instance lose control from clustering ?
Regards
FL

Polling in file adapter

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