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com.ibm.websphere.ce.cm.ConnectionWaitTimeoutException

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budired...@gmail.com

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Sep 5, 2008, 11:20:18 AM9/5/08
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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.ConnectionWaitTimeoutException: Connection not available, Timed out waiting for 179996
at com.ibm.ws.rsadapter.AdapterUtil.toSQLException(AdapterUtil.java:1308)
at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConnection(WSJdbcDataSource.java:452)
at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConnection(WSJdbcDataSource.java:408)
at com.genencor.ferm.dao.ConnectionPool.(ConnectionPool.java:43)
at com.genencor.ferm.dao.BaseDao.getLocalConnection(BaseDao.java:59)
at com.genencor.ferm.dao.FAntibioticTypeCodeTblDao.getWtPct(FAntibioticTypeCodeTblDao.java:180)
at com.ibm._jsp._input._jspService(_input.java:1772)
at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:87)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1068)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:543)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:122)
at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:225)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:321)
at com.ibm._jsp._switchpage._jspService(_switchpage.java:792)
at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:87)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1068)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:543)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:122)
at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:225)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:744)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1455)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:115)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:454)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:383)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:195)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:743)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:873)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1473)
Caused by: com.ibm.websphere.ce.j2c.ConnectionWaitTimeoutException: 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.java:2345)
at com.ibm.ejs.j2c.ConnectionManager.allocateMCWrapper(ConnectionManager.java:896)
at com.ibm.ejs.j2c.ConnectionManager.allocateConnection(ConnectionManager.java:596)
at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConnection(WSJdbcDataSource.java:439)
... 36 more

David Currie

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Sep 8, 2008, 4:20:58 AM9/8/08
to
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

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