Process only when there is a change in source file

Hi Experts,
My scenario is File to File.
Requirement is, source file need to be picked up only if there is change in the data.
Please guide me the approach for this.
Thanks
Kishore

Hi
I have also had similar problem and gone thru ur reply.
one blog was telling about accessing new files but not about new data in same file.
and can you please explain about the other blog RFC calls from Adapter modules...the Web Service Way . i am not sure about this approach to achieve my goal.
Kishore..if you found solution for ur approach pls let me know.

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          Any quick hint is greately appriciated
          Thanks
          asankha
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          of transaction transactio
          n=(IdHash=8297169,Name = [EJB
          CActionBeanImpl.execute()],Xid=3:c56b8ee8f6114598,Status=Active,numRep
          liesOwedMe=2,numRepliesOwedOthers=0,seconds since begin=0,seconds
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          te=active),properties=({
          weblogic.transaction.name=[EJB CActionBeanImpl.execute()],
          weblogic.jdbc=t3://10.2.1.133:7001, weblo
          gic.debug.DebugContext=weblogic.utils.DebugContext@662250})):
          java.lang.IllegalStateException: Commi
          t can be issued only when there are no requests awaiting responses.
          Currently there are 2 such reque
          sts. xid = 3:c56b8ee8f6114598, status = Active
          at
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          nsactionImpl.
          java:1272)
          at
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          ionImpl.java:
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          Impl.java:162
          at
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          at
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          at CeaMarketMainServlet.doPost(CeaMarketMainServlet.java:312)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
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          >


          This means that the transaction initiator has not received replies for some of
          the transactional requests when the transaction commits, i.e. the checked transaction
          behavior is violated. WLS TM enforces checked transaction behavior to make sure
          that all work done in the transaction context will be completed before transaction
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          Priscilla
          "Asankha C. Perera" <[email protected]> wrote:
          >Can someone explain what this message is, and what the reason could be
          >for
          >the java.lang.IllegalStateException.
          >
          >When such an error is encountered, how can I find out what the
          >"RepliesOwedMe" are. The complete exception is as follows
          >
          >Any quick hint is greately appriciated
          >Thanks
          >asankha
          >
          ><Sep 6, 2001 12:49:18 PM GMT+06:00> <Error> <EJB> <Exception during commit
          >of transaction transactio
          >n=(IdHash=8297169,Name = [EJB
          >CActionBeanImpl.execute()],Xid=3:c56b8ee8f6114598,Status=Active,numRep
          >liesOwedMe=2,numRepliesOwedOthers=0,seconds since begin=0,seconds
          >left=29,ServerResourceInfo[weblogi
          >c.jdbc.jts.Connection]=(state=suspended,assigned=none),SCInfo[myserver]=(sta
          >te=active),properties=({
          >weblogic.transaction.name=[EJB CActionBeanImpl.execute()],
          >weblogic.jdbc=t3://10.2.1.133:7001, weblo
          >gic.debug.DebugContext=weblogic.utils.DebugContext@662250})):
          >java.lang.IllegalStateException: Commi
          >t can be issued only when there are no requests awaiting responses.
          >Currently there are 2 such reque
          >sts. xid = 3:c56b8ee8f6114598, status = Active
          > at
          >weblogic.transaction.internal.TransactionImpl.throwIllegalStateException(Tra
          >nsactionImpl.
          >java:1272)
          > at
          >weblogic.transaction.internal.TransactionImpl.checkIfCommitPossible(Transact
          >ionImpl.java:
          >1206)
          > at
          >weblogic.transaction.internal.ServerTransactionImpl.commit(ServerTransaction
          >Impl.java:162
          >)
          > at
          >weblogic.ejb20.internal.BaseEJBObject.postInvoke(BaseEJBObject.java:201)
          > at
          >com.edocs.wb.web.action.CActionBeanEOImpl.execute(CActionBeanEOImpl.java:37)
          > at CeaMarketMainServlet.doGet(CeaMarketMainServlet.java:185)
          > at CeaMarketMainServlet.doPost(CeaMarketMainServlet.java:312)
          > at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
          > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
          > at
          >weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
          >:213)
          > at
          >weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletCo
          >ntext.java:12
          >65)
          > at
          >weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java
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          > at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
          > at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
          >>
          >
          >

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Process only when there is a change in source file

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