2450045 - PI File Channels Stop Polling regularly | SAP Knowledge Base Article

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2450045 - PI File Channels Stop Polling regularly


  • You have a Process Integration (PI) or Process Orchestration (PO) system which is using the FTP Sender Adapter
  • You experience intermittent issues whereby the File channel stops polling the FTP server directory
  • No error is thrown in the PI Communication Channel Monitor
  • A manual stop/start of the File channel can temporarily resolve the issue but it will reoccur again at a later time
  • Deeper analysis of the issue using Java Thread Dumps shows the following suspect thread:
    "XI File2XI[<Channel Name>/]_56948" tid=0x1agh002 runnable cpu=659180 ms allocated memory=11624895621 B files opened:1436 socks opened:143 nid=0x24ghq prio=-1
     at java.net.SocketInputStream.socketRead0 
     at java.net.SocketInputStream.read
     at sun.nio.cs.StreamDecoder.readBytes()
     at sun.nio.cs.StreamDecoder.implRead
     at sun.nio.cs.StreamDecoder.read
     - locked<0x792bf3668> (a java.io.InputStreamReader)
     at java.io.InputStreamReader.read
     at java.io.BufferedReader.fill
     at java.io.BufferedReader.readLine
     - locked<0x792bf3668> (a java.io.InputStreamReader)
     at java.io.BufferedReader.readLine
     at com.sap.aii.adapter.file.ftp.FTPCtrl.readReply()
     at com.sap.aii.adapter.file.ftp.FTPCtrl.sendCommand
     at com.sap.aii.adapter.file.ftp.FTPCl.quit()
     at com.sap.aii.adapter.file.File2XI.disconnectFTPServer()
     at com.sap.aii.adapter.file.File2XI.invoke()
     at com.sap.aii.af.lib.scheduler.JobBroker$Worker.run()
     at com.sap.engine.core.thread.impl3.ActionObject.run()
     at java.security.AccessController.doPrivileged(Ljava.security.PrivilegedAction;Ljava.security.AccessControlContext;)Ljava.lang.Object;(Native Method)
     at com.sap.engine.core.thread.impl3.SingleThread.execute(Lcom.sap.engine.core.thread.ThreadContextImpl;)V(SingleThread.java:156)
     at com.sap.engine.core.thread.impl3.SingleThread.run()V(SingleThread.java:471)



  • PI Release Independent
  • SAP NetWeaver
  • SAP Process Integration


SAP NetWeaver all versions ; SAP Process Integration all versions ; SAP enhancement package 1 for SAP NetWeaver Process Integration 7.1


Process Integration 7.0, PI 7.0, PI 7.01, PI 7.02, Process Integration 7.10, PI 7.10, Process Integration 7.11, PI 7.11, Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, Process Orchestration 7.40, PI 7.40, PO 7.40, Process Orchestration 7.50, PI 7.50, PO 7.50, NetWeaver, XI, Restart, stop polling automatically , KBA , BC-XI-CON-FIL , File Adapter , Problem

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