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From "Dhruba Bandopadhyay" <bdhr...@gmail.com>
Subject Re: 4.1.2 problems
Date Wed, 23 Apr 2008 09:20:03 GMT
A small correction and clarification.  The version of problem (2) in
this case may have been due to OOM.  However I have had lock related
exception without OOM as well and wondered whether it was derby
related or activemq related.

On Wed, Apr 23, 2008 at 10:03 AM, Dhruba Bandopadhyay <bdhruba@gmail.com> wrote:
> Having had problems with 5.1.0 I switched to 4.1.2 and am getting
>  these issues with 4.1.2.
>
>  (1)
>  ERROR TransportConnector             - Could not accept connection :
>  java.net.SocketException: Too many open files
>  java.net.SocketException: Too many open files
>         at java.net.PlainSocketImpl.socketAccept(Native Method)
>         at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
>         at java.net.ServerSocket.implAccept(ServerSocket.java:453)
>         at java.net.ServerSocket.accept(ServerSocket.java:421)
>         at org.apache.activemq.transport.tcp.TcpTransportServer.run(TcpTransportServer.java:153)
>         at java.lang.Thread.run(Thread.java:619)
>
>  (2)
>  WARN  JDBCPersistenceAdapter         - Old message cleanup failed due
>  to: SQL Exception: A lock could not be obtained within the time
>  requested
>  WARN  TransportConnection            - Failed to remove consumer:
>  ID:gbprd01-gs-con02.complinet.com-53034-1208880551977-0:0:9:1. Reason:
>  java.lang.OutOfMemoryError: GC overhead limit exceeded
>  java.lang.OutOfMemoryError: GC overhead limit exceeded
>  WARN  JDBCPersistenceAdapter         - Old message cleanup failed due
>  to: SQL Exception: A lock could not be obtained within the time
>  requested
>  WARN  ManagedTransportConnection     - Failed to register MBean:
>  org.apache.activemq:BrokerName=broker2,Type=Connection,ConnectorName=openwire,Connection=ID_gbprd01-gs-con01.complinet.com-41163-1208880295517-2_0
>  WARN  ManagedRegionBroker            - Failed to register MBean:
>  org.apache.activemq:BrokerName=broker2,Type=Subscription,persistentMode=Non-Durable,destinationType=Queue,destinationName=deploy-queue,clientId=ID_gbprd01-gs-con02.complinet.com-53034-1208880551977-2_0,consumerId=ID_gbprd01-gs-con02.complinet.com-53034-1208880551977-0_0_9_1
>  WARN  AbstractRegion                 - A duplicate subscription was
>  detected. Clients may be misbehaving. Later warnings you may see about
>  subscription removal are a consequence of this.
>
>  I am sending 1.5million messages through a single broker with failover
>  to another broker and two consumers on the first broker.  The first
>  one I will address by increasing open file limit.  The second I have
>  no idea about.  Is that derby falling over?
>
>  Thanks.
>

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