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From Kiran Badi <ki...@poonam.org>
Subject Tomcat DBCP Connection pool issue
Date Tue, 26 Jun 2012 05:11:04 GMT
Hi All,

While testing the pagination links ,I am getting below error,

SEVERE: null
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot get a connection, 
pool error Timeout waiting for idle object
     at 
org.apache.tomcat.dbcp.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:114)
     at 
org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
     at 
indianads.getServicesTourDetail.doGet(getServicesTourDetail.java:106)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
     at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
     at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
     at 
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
     at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
     at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
Was able to get connection
     at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
     at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
     at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:498)
     at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
     at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
     at 
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
     at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
     at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:394)
     at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
     at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
     at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
     at 
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
     at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
     at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
     at java.lang.Thread.run(Thread.java:662)
Caused by: java.util.NoSuchElementException: Timeout waiting for idle object
     at 
org.apache.tomcat.dbcp.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1144)
     at 
org.apache.tomcat.dbcp.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:106)
     ... 24 more

Where should I look to see as how many connection are establised on the 
DB side and how many I have still that I can use ?

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