Hello,

Thanks for your quick replies. I did a mistake for my JBoss level. I post all i have :

Jboss startup :

JBoss Bootstrap Environment JBOSS_HOME: /opt/jboss JAVA: /opt/java/bin/java JAVA_OPTS: -Dprogram.name=run.sh -Xms512m -Xmx512m -Xcompressedrefs -Xoptionsfile=/app/jvm.conf CLASSPATH: /opt/jboss/bin/run.jar:/opt/java/lib/tools.jar *****
01:00:58,734 INFO  [Server] Starting JBoss (MX MicroKernel)... 01:00:58,915 INFO  [Server] Release ID: JBoss [EAP] 4.3.0.GA_CP07 (build: SVNTag=JBPAPP_4_3_0_GA_CP07 date=200911251949) ….
01:01:04,258 INFO  [ServerInfo] Java version: 1.6.0,IBM Corporation 01:01:04,258 INFO  [ServerInfo] Java VM: IBM J9 VM 2.4,IBM Corporation 01:01:04,258 INFO  [ServerInfo] OS-System: AIX 5.3,ppc64 …....
01:02:01,147 [main] INFO  [AjpProtocol] Initializing Coyote AJP/1.3 on ajp-173.5.1.80-8009 …....
01:02:01,215 [main] INFO  [StandardEngine] Starting Servlet Engine: JBossWeb/2.0.0.GA_CP

then file /app/jvm.conf

-Dcom.ibm.tools.attach.enable=no -Xlp4k -Xgcpolicy:subpool

then jacorb.properties (where thread pool is defined)

#########################
#                       #
#   POA Configuration   #
#                       #
#########################

# displays a GUI monitoring tool for servers
jacorb.poa.monitoring=off

# thread pool configuration for request processing
jacorb.poa.thread_pool_max=500
jacorb.poa.thread_pool_min=200

# if set, request processing threads in thePOA
# will run at this priority. If not set or invalid,
# MAX_PRIORITY will be used.
#jacorb.poa.thread_priority=

# Properties controlling the POA's request queue.  If queue_wait is off,
# then if there are more than queue_max requests in the queue, the
# client gets TRANSIENT exceptions for any requests.  If queue_wait is on,
# then the call blocks at the server side until no more than queue_min
# requests are left in the queue.  The new request is then delivered as usual.
jacorb.poa.queue_wait=off
jacorb.poa.queue_max=100
jacorb.poa.queue_min=10

Then oracle datasource

<datasources>
  <local-tx-datasource>
    <jndi-name>MyDS</jndi-name>
    <use-java-context>false</use-java-context>
    <connection-url>jdbc:oracle:thin:@myHost:1521:DBname</connection-url>
    <driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
    <user-name>myName</user-name>
    <password>mypassword</password>
    <min-pool-size>15</min-pool-size>
    <max-pool-size>1000</max-pool-size>
    <new-connection-sql>ALTER SESSION SET CONSTRAINTS = DEFERRED</new-connection-sql>
    <valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker</valid-connection-checker-class-name>
    <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>
    <prefill>true</prefill>
    <metadata>
        <type-mapping>Oracle9i</type-mapping>
    </metadata>
  </local-tx-datasource>
</datasources>

Normally, i expect 200 (corba thread pool) + 15 (datasource) + Jboss thread pool = around 300 threads.

I followed the activethreadcount and the JVM start at

276 at 01H00 up to 7:30

then 670 from 07:30 to 07:40

then 1078 to 1500 from 07:40 to 08:00

This number doesn't go down. In some JVM, it increases. I don't know why i get them as i don't have too much activity on it. I took a thread dump and i saw no activity with 1000 requestProcessor doing nothing. I can post the thread as an attached file but i don't know how.

regards.

Hello,

I can post one part of the thread dump if it is helpful :

For information, all my requestProcessor are in this state :

3XMTHREADINFO      "RequestProcessor-1545" J9VMThread:0x0000000031359400, j9thread_t:0x0000000159CAD9A0, java/lang/Thread:0x0000000041DDF6B0, state:CW, prio=10
3XMTHREADINFO1            (native thread ID:0x4EE0BF, native priority:0xA, native policy:UNKNOWN)
3XMTHREADINFO3           Java callstack:
4XESTACKTRACE                at java/lang/Object.wait(Native Method)
4XESTACKTRACE                at java/lang/Object.wait(Object.java:167(Compiled Code))
4XESTACKTRACE                at org/jacorb/poa/RequestProcessor.run(Bytecode PC:3(Compiled Code))
3XMTHREADINFO3           Native callstack:
4XENATIVESTACK               _event_wait+0x248 (0x0900000000191FD0 [libpthreads.a+0x12fd0])
4XENATIVESTACK               _cond_wait_local+0x3a4 (0x090000000019DF00 [libpthreads.a+0x1ef00])
4XENATIVESTACK               _cond_wait+0x50 (0x090000000019E4AC [libpthreads.a+0x1f4ac])
4XENATIVESTACK               pthread_cond_wait+0x178 (0x090000000019EF3C [libpthreads.a+0x1ff3c])
4XENATIVESTACK               (0x0900000001BC4B64 [libj9thr24.so+0x4b64])
4XENATIVESTACK               (0x0900000001BC4928 [libj9thr24.so+0x4928])
4XENATIVESTACK               (0x0900000001BC4994 [libj9thr24.so+0x4994])
4XENATIVESTACK               (0x09000000024A74A4 [libjclscar_24.so+0x264a4])
4XENATIVESTACK               (0x09000000024A80F8 [libjclscar_24.so+0x270f8])
4XENATIVESTACK               (0x0900000001B43FEC [libj9vm24.so+0xcfec])
4XENATIVESTACK               (0x0900000001BD3B74 [libj9prt24.so+0x3b74])
4XENATIVESTACK               (0x0900000001B43F08 [libj9vm24.so+0xcf08])
4XENATIVESTACK               (0x0900000001BC2658 [libj9thr24.so+0x2658])
4XENATIVESTACK               _pthread_body+0xdc (0x09000000001824F8 [libpthreads.a+0x34f8])

regards