File Polling

Is there any mechanism to poll for the existence of a file in Java. When I say existence I mean
File is actually created and is not in the process of creation.

Is there any mechanism to poll for the existence of a
file in Java. When I say existence I mean
File is actually created and is not in the process of
creation.No.
The usual means is to write a polling loop to check for file size change over a fixed period of time.

Similar Messages

File occasionally stuck in staging on File Poller Proxy Service

Hi All,
I'm having some problems with a File Poller Proxy Service. The Proxy reads xml files in a polling shared directory and puts the message in a queue. The files are small (<1kbytes).
The problem is that occasionally the file gets stuck in the staging directory and never gets to the jms queue. If I cut the file and paste it again in the polling directory, it gets processed fine.
Any ideas?
Thanks.

I have one cluster on the web logic server with 4 managed servers in it.
The proxy runs on ms1, and the staging directory is on a different physical server shared folder.

Is there any java File Poller class example??

Dear Sir:
My project requires to write a java class to perform something like File Poller function,
ie. this File Poller Class will monitor some remote or local location/directory, then when some files were dropped in this location,
File Poller Class will pick them up then do next such as put them somewhere else or parse etc.
I google for a while, did not find a good example. can some guru here help post a good File Poller class example ??
Thanks
Sunny

yawmark wrote:
you could do a lot worse than use [Apache Camel|http://activemq.apache.org/camel/]...
I thought Apache Camel was Perl. Oh, wait...
;o)
~Heh heh
Just to pre-empt the [next gag|http://activemq.apache.org/camel/what-is-a-camel-toe.html]

How can i pass the name of the file polled by the file adapter to next step

Hi XI guru's ,
How can i pass the name of the file polled by the file adapter to next step in a BPM..?
regards,

Use Adapter-Specific Message Attributes and map that value in udf to the BPM message.
Also see this
/people/michal.krawczyk2/blog/2005/06/11/xi-how-to-retrieve-messageid-from-a-bpm
Regards,
Prateek

File poller (please help)

Hello!
I have to create a file poller programm, which should search different files (filename is unknown) in a directory of the application server (like AL11). Is there a FM, which has these functionality? Or something else (Method/BAPI)?
Thanks a lot!
André Klos
Message was edited by: André Klos

Hi,
Check this link,
<u>http://www.sapdevelopment.co.uk/file/file_getdirfiles.htm
http://www.sapdevelopment.co.uk/file/file_disall.htm</u>
Hope it helps u.
Kindly reward points if u find it useful.
Thanks&Regards,
Ruthra

File polling in cluster environment

We have a cluster environment with two servers(say, osb_server1 and osb_server2) and a proxy service is configured with file polling using HAfileAdapter.
When executing this service immediately after activation, for first time, the server “osb_server2” throws error as,
Caused By: BINDING.JCA-11042
File deletion failed.
File deletion failed.
File : /**Path**/filename.txt as it does not exist. could not be deleted.
But for consecutive attempts, the osb proxy service is processed by “osb1_server1” and we are not getting the above mentioned error.
In short, We face the issue as below only when executing first time after “Activate” session but the consecutive attempts doesn’t throw error.
Why such error occurs when executing in cluster environment?
Thanks in advance.

try to use the file protocol provided by osb.And select the polling server as on eof the managed server.

BEA-423442-Exception while starting the client classifications file poller

While Weblogic 10.3.2 server is started, below error is displayed in console. Please provide if any solution for this.
<netuix> <BEA-423442> <Exception while starting the client classifications file poller: [java.lang.AbstractMethodError]
java.lang.AbstractMethodError
at com.bea.netuix.xml.util.DomToolkit.parse(DomToolkit.java:166)
at com.bea.netuix.xml.util.JDomToolkit.build(JDomToolkit.java:45)
at com.bea.netuix.client.repository.ClassifierRepository.getDocumentFromInputStream(ClassifierRepository.java:339)
at com.bea.netuix.client.repository.ClassifierRepository.createRepositoryFromInputStream(ClassifierRepository.java:326)
at com.bea.netuix.client.ClientClassifierImpl.<init>(ClientClassifierImpl.java:103)
Truncated. see log file for complete stacktrace

Hi Angel,
Please see the following doc for instructions on starting an OMS.
http://docs.oracle.com/cd/E24628_01/doc.121/e24473/emctl.htm#BABFEEAJ
Regards,
- Loc

Ftp and File polling

Hi
Do anyone have sample code for file polling.
i am using linux environment.
If any client ftp a file i have to poll the file and parse the file csv , if file is parsed and good then send to oracle database and archive the file.
I have to do everything java
if one had done this kind of application, send me the sample code.
Thanks in advance
sami

Actually client using any ftp client programm and send or ftp a file on the my ftp server from there i have to check which file is new for every 1hour and i have to take that file, parse (csv parse) and insert the data to oracle database and archive the file, if file is good otherwise i have to send email to some dept saying file is bad.
could u have any idea or sample code.
Thanks
sami

Issues with File Polling and File Copy in a Cluster

Hi,
I have a 2 node cluster of SOA 11.1.1.5. Running into an issue.
I have a File Poll Process which picks up new files and then copy them over to another directory [using COPY operation of file adapter]. After that using FTP Adapter to ftp the file [using MOVE operation of FTP]. Now if I place a file Poll is creating 2 instances. I have configured HAFile Adapter and HAFTPAdapter. Now if I remove the file COPY operation I see only one instance as soon as I put back file copy it creates multiple instances again. Any idea what might be wrong.
I am following the document for file copy and ftp move http://docs.oracle.com/cd/E23943_01/integration.1111/e10231/adptr_file.htm#BABEBJAF section
4.5 Oracle File and FTP Adapters Use Cases
But in a cluster if I use file copy I see multiple instances of Polling instances.
Thanks

"puneet" <[email protected]> wrote in message
news:3fcf4fa4$[email protected]..
>
Hi I use WLI studio to add a user in a clustered environment (admin + 2managed
wli servers). I see the following message in the logs:
####<Dec 3, 2003 1:05:02 PM MST> <Warning> <Security> <suznd265><eflow_2323_wli
managed_2> <ExecuteThread: '9' for queue: 'default'> <kernel identity><14:5a2cc
dff10338da2> <090048> <Made an in-memory only change to the FileRealm.>
As a result, the user, that I added is not actually visible to the othermanaged
servers in the cluster. I have verified this by having only one managedserver
up when adding the user. Once I have added the user, I boot the othermanaged
server and bring the first managed server down. The user I have justcreated gets
lost.
This occurs if you make the change on the managed server. Can you make the
change on
the admin server? It should get pushed to the managed servers.

File Polling is not working in FTP adapter

Experts,
Configured FTP adapter should poll the file from the FTP server which is in active mode .But this is not happening as expected. This feature was not available in Oracle soa 10g
http://download.oracle.com/technology/tech/soa/soa_best_practices_1013x_drop3.pdf
they say :
Does the FTP Adapter Support the ACTIVE Mode of Connections?
No, for security concerns the FTP adapter supports PASV (passive) only.
Do they have not change this feature in Oracle soa 11g.
Your thoughts will be very much appreciated.
Thanks

I doubt if the ftp path is not given correctly. Can you try this.
1. if you gave logical_file_path try giving the actual file path or vice versa and try.
2. having the highest level of logging enabled (development). You should see some error in the logs. Is this on linux or windows, if linux search is case sensitive
hence search for 'rror' without 'e' as you donot know the case it would be in.
3. last option try retiring the process and then turn it on. This works sometimes to pick the file

Problem with File Polling

Hi, Experts
I have following problem
poll interval is 900 sec in my sender file adapter,
but the file adapter is picking up the file 5 times at a time and IS processing them.Like tis it is happening every 900 sec.
but i need file adapter to pick up the file only once in every 900 sec.
can any one help mein this regard.
Thanks in advance
Ravi.....

Ravi,
The File Adapter will pick up all Files Avaialble during the plling interval even if multiple files are available.
If you need sequential processing,
1. Make the QOS as EOIO.
2. In the Option Sequential Procesing --> Select the Option as either By FileName or Timestamp as per your requirements.
Now, if multiple files are availble, the file will be processed sequentialy like you want. But, you cannot make sure that only one file is picked at one time!
Regards
Bhavesh

Sender File Adapter - Restrict number of file polled at each poll interval

Hi all,
PI 7.0 SPS16.
We would like to know whether it is possible to configure a sender file adapter (file conversion mode) in order to restrain the number of file taken at each poll interval and if yes how ?
Thanks for your future answers.
Jean-Charles

Hi Jean
Standard adapter do not provide functionality to take an input like number of files to be taken at poll interval. But using adapter module you can achieve this.
SAP PI is having the function to set poll timings and scheduling. You can write adapter module and execute this module using File adapter type communication channel before the standard bean and you can restrict the number of files.
Check the link given above as well as this How to Guide
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/3bdc14e1-0901-0010-b5a9-a01e29d75a6a
Thanks
Gaurav

FTP Adapter File Polling does not raise error when FTP server is down

Hi All,
Thanks in advance.
I am polling for new files in a FTP Server. However, if the server is down there is no way for me to catch the fault to notify someone. I am using fault-policies but that never gets triggered when polling an unavailable FTP Server.
One option is to have a completely separate scheduled process (SOA or not) that tries to connect to the servers but I am trying not to go that route just to keep things manageable and within the realm of the process.
I am sure that I am not the only one polling for new files in a FTP Server, so I thought to pick your brain to tackle this scenario.
Thanks for taking the time to read this.

I was contacted by our DBA team for an exception received while writing a file to a FTP location.
Then i looked at the exception message and asked them to check the whether they are able to contact the ftp server using command prompt then they said the user password got expired.
They reset the password and its working now.
Am i missing something here :(
Exception:
WSIF JCA Execute of operation 'Put' failed due to: Error sending file to FTP Server.
Unable to send file to server.
; nested exception is:
ORABPEL-11429
Error sending file to FTP Server.
Unable to send file to server.
Please ensure 1. Specified remote output Dir has write permission 2. Output filename has not exceeded the max chararters allowed by the OS and 3. Remote File System has enough space.
Thanks,
Vijay
Edited by: veejai24 on 25-Jul-2012 07:10

Issue in File Polling in OSB

Hi,
I need to poll an file based on file modified date from an particular directory.For example i need to poll only files which are last modified on 1st Jan 2013.Is it possible in OSB??
Thanks in Advance
Jayanthi

poll only files which are last modified onThere's nothing out-of-the-box for that... You may have to work around with some custom pre/post processing...
Related documentation...
http://docs.oracle.com/cd/E23943_01/dev.1111/e15866/transports.htm#i1268940
http://docs.oracle.com/cd/E23943_01/integration.1111/e10231/adptr_file.htm#CIAHFFBI
Cheers,
Vlad

Issue in File Polling

Hi,
I have to poll the files( which are copied to the directory at the same time) and do the validation for every record in the file and insert the records to DB.The whole process for each file will take atleast 3 hrs to complete.I need to poll second file only after processing of first file completes.I tried by giving polling interval 10 minutes(600).But its polling both files at a time.Kindly let me know what will be the possible solution to poll the files sequentially with a long polling interval.
Thanks in Advance
Jayanthi

Looks like, you want to process only one file in each polling cycle, (i.e. you want to work with only one file at a time)
Use the property called "MaxRaiseSize" and set it to '1'. Then in every poll cycle only one file is picked up and processed.
So, for example, if you set MaxRaiseSize = 1 and PollingFrequency=30 then for every 30 minutes only file is read and processed.
Hope this helps to solve your issue. Please let us know either way.

File Polling in OSB

I have a File with Fixed length format-10
First Line has 10 characters
Second Line has 10 characters
Third Line has 9 characters
I need to ignore the Third Line as the characters are less when compared to Fixed Length
How can i do this in OSB while polling that file?

Hi,
Biemond's blog has a step by step
http://biemond.blogspot.com.au/2008/12/flat-file-to-xml-with-oracle-service.html
Also have a look at this...
http://docs.oracle.com/cd/E23943_01/dev.1111/e15866/howto.htm#g1024966
You will have to do some experimentation... There's probably no option like "ignore line if <condition>"...
This may will help on the latter...
How to remove empty tags from MFL transformation in ALSB?
Cheers,
Vlad

File Polling

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