2122133 - PI message processing stops with backlog in SMQ2 | SAP Knowledge Base Article

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2122133 - PI message processing stops with backlog in SMQ2

Symptom

  • Message processing stops in Process Integration (PI) 7.0 which is installed on a MaxDB database
  • The messages may show various errors in transaction SXMB_MONI e.g. Mapping errors, RFC_ERROR_COMMUNICATION, RFC rfcSendInfo Lookup Exception
  • A backlog is visible in transaction SMQ2
  • There are sufficient free Dialog Work Processes
  • The queues are in status "Running"
  • The QIN-Scheduler is in status "Waiting"
  • De-registering and re-registering the queues in transaction SMQR has no affect
  • A system restart has no affect on the issue
  • You capture Java Thread Dumps and these show a hang state with the Thread below:

    "Finalizer" tid=0x1tkg7000 waiting for monitor entry cpu=224.78 ms allocated memory=37201 B file i/o:2483/0 B net i/o:0/2470 B nid=0x67c0 prio=-1
     at com.sap.dbtech.jdbc.StatementSapDB.finalize()V(StatementSapDB.java:452)
     - waiting to lock<0xaltr1c48> (a com.sap.dbtech.jdbc.ConnectionSapDB), locked by SAPEngine_Application_Thread[impl:3]_15
     at java.lang.ref.Finalizer.invokeFinalizeMethod(Ljava.lang.Object;)V(Native Method)
     at java.lang.ref.Finalizer.runFinalizer()V(Finalizer.java:84)
     at java.lang.ref.Finalizer.access$100(Ljava.lang.ref.Finalizer;)V(Finalizer.java:14)
     at java.lang.ref.Finalizer$FinalizerThread.run()V(Finalizer.java:185)

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Environment

  • SAP NetWeaver 7.0
  • SAP enhancement package 1 for SAP NetWeaver 7.0
  • SAP enhancement package 2 for SAP NetWeaver 7.0
  • SAP enhancement package 3 for SAP NetWeaver 7.0

Product

SAP NetWeaver 7.0 ; SAP enhancement package 1 for SAP NetWeaver 7.0 ; SAP enhancement package 2 for SAP NetWeaver 7.0 ; SAP enhancement package 3 for SAP NetWeaver 7.0

Keywords

Process Integration 7.0, PI 7.0, PI 7.01, PI 7.02, SAP DB, XI_AF_MSG_AUDIT , KBA , BC-XI-IS , Integration Server , BC-DB-SDB , MaxDB , Problem

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