com.ibm.websphere.ce.cm.ConnectionWaitTimeoutExcep tion

Hello,

I am using websphere application server v6.1. while i am running my application, frequently i am getting the following exception.
Can any body give me suggestions on this exception?


2008-09-05 07:26:20,261 DEBUG [WebContainer : 289] dao.ConnectionPool (ConnectionPool.java:53) - com.ibm.websphere.ce.cm.ConnectionWaitTimeoutExcep tion: Connection not available, Timed out waiting for 179996
at com.ibm.ws.rsadapter.AdapterUtil.toSQLException(Ad apterUtil.java:1308)
at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConn ection(WSJdbcDataSource.java:452)
at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConn ection(WSJdbcDataSource.java:408)
at com.genencor.ferm.dao.ConnectionPool.(ConnectionPo ol.java:43)
at com.genencor.ferm.dao.BaseDao.getLocalConnection(B aseDao.java:59)
at com.genencor.ferm.dao.FAntibioticTypeCodeTblDao.ge tWtPct(FAntibioticTypeCodeTblDao.java:180)
at com.ibm._jsp._input._jspService(_input.java:1772)
at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJsp Base.java:87)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.ser vice(ServletWrapper.java:1068)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.han dleRequest(ServletWrapper.java:543)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.h andleRequest(ServletWrapper.java:478)
at com.ibm.wsspi.webcontainer.servlet.GenericServletW rapper.handleRequest(GenericServletWrapper.java:12 2)
at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensio nServletWrapper.handleRequest(AbstractJSPExtension ServletWrapper.java:225)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispat cher.forward(WebAppRequestDispatcher.java:321)
at com.ibm._jsp._switchpage._jspService(_switchpage.j ava:792)
at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJsp Base.java:87)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.ser vice(ServletWrapper.java:1068)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.han dleRequest(ServletWrapper.java:543)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.h andleRequest(ServletWrapper.java:478)
at com.ibm.wsspi.webcontainer.servlet.GenericServletW rapper.handleRequest(GenericServletWrapper.java:12 2)
at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensio nServletWrapper.handleRequest(AbstractJSPExtension ServletWrapper.java:225)
at com.ibm.ws.webcontainer.servlet.CacheServletWrappe r.handleRequest(CacheServletWrapper.java:90)
at com.ibm.ws.webcontainer.WebContainer.handleRequest (WebContainer.java:744)
at com.ibm.ws.wswebcontainer.WebContainer.handleReque st(WebContainer.java:1455)
at com.ibm.ws.webcontainer.channel.WCChannelLink.read y(WCChannelLink.java:115)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLi nk.handleDiscrimination(HttpInboundLink.java:454)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLi nk.handleNewInformation(HttpInboundLink.java:383)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCa llback.complete(HttpICLReadCallback.java:102)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListe ner.futureCompleted(AioReadCompletionListener.java :165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallbac k(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletion Actions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture .java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHand ler.java:195)
at com.ibm.io.async.ResultHandler.runEventProcessingL oop(ResultHandler.java:743)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler .java:873)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.j ava:1473)
Caused by: com.ibm.websphere.ce.j2c.ConnectionWaitTimeoutExce ption: Connection not available, Timed out waiting for 179996
at com.ibm.ejs.j2c.FreePool.createOrWaitForConnection (FreePool.java:1499)
at com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.ja va:2345)
at com.ibm.ejs.j2c.ConnectionManager.allocateMCWrappe r(ConnectionManager.java:896)
at com.ibm.ejs.j2c.ConnectionManager.allocateConnecti on(ConnectionManager.java:596)
at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConn ection(WSJdbcDataSource.java:439)
... 36 more

As the exception suggests, a component is trying to obtain a connection
but is timing out waiting for a free connection to become available. It
suggests that either the pool is undersized or the application is not
freeing up (closing) connections when it should be (or both).

Regards,
David