Hi Kalyan, Are you using the @Asnycrhous annotation? If so, that's probably why you are seeing messages for the AsynchronousPool. I found this article which helps explain asynchronous EJBs
https://www.tomitribe.com/blog/asynchronous-ejbs-on-tomee/ It mentions the max pool size is set, as a default of 5. As does this article: https://tomee.apache.org/latest/docs/admin/configuration/application.html Have you tried to set that max pool size property to a higher number? If you can determine from logs the average number of invocations per second at peak periods you could use that as a guide for setting the async pool size. If that's not possible try a couple different max pool sizes (e.g. 20, 50, 100) and see if that helps. I don't think - although I'm not sure about this - that setting the max pool size higher is going to effect performance much but I'm not sure about that. Richard On Thu, Oct 3, 2019 at 3:16 PM Kalyan <kalyanfrem...@gmail.com> wrote: > Hello, > I am getting following error in my application. > > avax.ejb.ConcurrentAccessTimeoutException: No instances available in > Stateless Session Bean pool. Waited 30 SECONDS > at > > org.apache.openejb.core.stateless.StatelessInstanceManager.getInstance(StatelessInstanceManager.java:226) > at > > org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:204) > at > > org.apache.openejb.core.ivm.EjbObjectProxyHandler.synchronizedBusinessMethod(EjbObjectProxyHandler.java:265) > at > > org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxyHandler.java:260) > at > > org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler.java:89) > at > > org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:349) > > > > My application is heavily used. Looks like not enough instances of beans. > > I saw this post to increase the pool size > > https://tomee.apache.org/admin/configuration/containers.html > > > and changed my configuration as > > java.naming.factory.initial=org.apache.openejb.core.LocalInitialContextFactory > openejb.deployments.classpath.ear=false > > myApp = new://Container?type=STATELESS > myApp.AccessTimeout = 30 seconds > *myApp.MaxSize = 40* > myApp.MinSize = 0 > myApp.StrictPooling = true > myApp.MaxAge = 0 hours > myApp.ReplaceAged = true > myApp.ReplaceFlushed = false > myApp.MaxAgeOffset = -1 > myApp.IdleTimeout = 0 minutes > myApp.GarbageCollection = false > myApp.SweepInterval = 5 minutes > myApp.CallbackThreads = 5 > myApp.CloseTimeout = 5 minutes > myApp.UseOneSchedulerThreadByBean = false > myApp.EvictionThreads = 1 > > > On the server start up I see > > INFO - Configuring Service(id=myApp, type=Container, provider-id=Default > Stateless Container) > > DEBUG - Containers : 1 > DEBUG - Type Container ID > DEBUG - STATELESS myApp > DEBUG - Deployments : 5 > DEBUG - Type Deployment ID > > /Question i have is / > How would i know if the bean size is increased ? I don't see any log > message for it. > > /Secondly I also see / > > DEBUG - Using default 'openejb.tempclassloader.skip=none' Possible values > are: none, annotations, enums, all or NONE or ALL > DEBUG - Using default 'AsynchronousPool.Size=5' > DEBUG - Using default 'AsynchronousPool.CorePoolSize=5' > DEBUG - Using default 'AsynchronousPool.MaximumPoolSize=5' > DEBUG - Using default 'AsynchronousPool.QueueSize=5' > DEBUG - Using default 'AsynchronousPool.KeepAliveTime=60 SECONDS' > DEBUG - Using default 'AsynchronousPool.AllowCoreThreadTimeOut=true' > DEBUG - Using default 'AsynchronousPool.QueueType=linked'. Possible values > are: array, linked, priority, synchronous > DEBUG - Using default 'AsynchronousPool.OfferTimeout=30 SECONDS' > DEBUG - Using default 'AsynchronousPool.ShutdownWaitDuration=1 MINUTES' > > > What's the AsynchronousPool ??? > > > Please help me to sort this issue? > I'm running into this issues in production. > > > > thanks > Kalyan > > > > > > > > -- > Sent from: > http://tomee-openejb.979440.n4.nabble.com/TomEE-Users-f979441.html > -- Richard Monson-Haefel https://twitter.com/rmonson https://www.linkedin.com/in/monsonhaefel/
