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From Daryl Richter <>
Subject Warning and then OutOfMemoryError
Date Thu, 24 May 2007 14:29:04 GMT

Last night one of our brokers, running a build of ActiveMQ 4.2-SNAPSHOT
built a couple of weeks ago, crashed with the following output:

WARN  TcpTransport                   - Cannot set socket buffer size = 65536
Exception in thread "ActiveMQ Transport Server: ssl://localhost:62622"
Exception in thread "ActiveMQ Connection
Dispatcher: 24407889" Exception in thread "ActiveMQ Transport:
tcp:///" Exception in thread "
btpool0-0" java.lang.OutOfMemoryError: Java heap space
Exception in thread "RMI RenewClean-[]"
java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Java heap space
ERROR TransportStatusDetector        - failed to complete a sweep for
blocked clients
java.lang.OutOfMemoryError: Java heap space
ERROR TransactionTemplate            - Having to Rollback - caught an
exception: Java excep
tion: 'Java heap space: java.lang.OutOfMemoryError'.

At this point the broker became unresponsive.

Does that WARN have anything to do with it?  There aren't timestamps so I
can't tell the time sequence.

We are connecting to this broker exclusively with Stomp clients.  The
throughput is not large, though there was active messaging at the time.


Daryl Richter -:- Fund Development Services
440 Park Avenue South -:- 14th Floor -:- Manhattan -:- NY -:- 10016


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