JMS Queue Consumers

Question

          Hi,
          I am using WL6.1 SP4 JMS Queues and MDB's. During busy times, the bean(s) can't
          keep up. Number of consumers are always 15 (cosumers total- 30 , consumers high
          - 15 and consumers -15 on Monitoring window) even lot messages are pending in
          the queue. The pool parameters specified in DD are as below
          <pool>
          <max-beans-in-free-pool>30</max-beans-in-free-pool>
          <initial-beans-in-free-pool>5</initial-beans-in-free-pool>
          </pool>
          Can some one help me out.
          Thanks in adv,
          Dp
          

Answer 1

As far as I know, these are the only two parms that effect
          MDB instance creation on 6.1. I suggest:
          1) increase the values higher to see what happens
          2) make sure to reboot (these values are not dynamic)
          3) force server to thread dump to ensure that the extra threads
          are getting created and that the MDBs are running in
          the thread pool that your are increasing...
          4) post to the weblogic.ejb newsgroup, which "owns" mdbs
          5) contact customer support
          Tom
          DP wrote:
          > Hi,
          >
          > I increased this thread pool size to 25.
          > Now the max-beans-in-free-pool is 20.
          > Still it is not increasing the beans count above 15.
          >
          > DP
          >
          > Tom Barnes <[email protected]> wrote:
          >
          >>MDBs run in the main "default execute" thread pool, which has a
          >>default size of 15. This is the limit you are running into.
          >>You can configure a server's thread pool size on the console.
          >>
          >>Note that since this thread pool is used for other server work,
          >>the MDB max-beans-in-free-pool should be configured to something
          >>somewhat less that the "default execute" thread pool size. This
          >>prevents starvation dead-locks...
          >>
          >>Tom
          >>
          >>DP wrote:
          >>
          >>>Hi,
          >>>
          >>>I am using WL6.1 SP4 JMS Queues and MDB's. During busy times, the
          >>
          >>bean(s) can't
          >>
          >>>keep up. Number of consumers are always 15 (cosumers total- 30 , consumers
          >>
          >>high
          >>
          >>>- 15 and consumers -15 on Monitoring window) even lot messages are
          >>
          >>pending in
          >>
          >>>the queue. The pool parameters specified in DD are as below
          >>>
          >>><pool>
          >>> <max-beans-in-free-pool>30</max-beans-in-free-pool>
          >>> <initial-beans-in-free-pool>5</initial-beans-in-free-pool>
          >>> </pool>
          >>>
          >>>Can some one help me out.
          >>>
          >>>Thanks in adv,
          >>>Dp
          >>
          >