I use Jboss 7.1 and PHP 5.3.10 in a web page and...

I don´t know why the Jboss suddenly can´t obtain more connections. 
if the spool is a lot greater than the demand.
I looked if maybe somo error produce this but i can´t find the cause.
I´m tired and bored whith this situation. Please anybody help me.

Regards

A lot of thanks

This is the console exit

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1) java.sql.SQLException: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/datasources/DefaultDS

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:137)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.toks.pkfe.connection.ConnectDBMain.getConnection(ConnectDBMain.java:25)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.toks.pkfe.connection.ConnectDBMain.getInstance(ConnectDBMain.java:16)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.toks.pkfe.dao.ErrorDAO.setErrorHandler(ErrorDAO.java:46)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.toks.pkfe.ws.ErrorSet.setError(ErrorSet.java:69)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at java.lang.reflect.Method.invoke(Unknown Source)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.ws.common.invocation.AbstractInvocationHandlerJSE.invoke(AbstractInvocationHandlerJSE.java:111)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.wsf.stack.cxf.JBossWSInvoker._invokeInternal(JBossWSInvoker.java:181)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.wsf.stack.cxf.JBossWSInvoker.invoke(JBossWSInvoker.java:127)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:58)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at java.util.concurrent.FutureTask.run(Unknown Source)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.cxf.workqueue.SynchronousExecutor.execute(SynchronousExecutor.java:37)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:106)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:207)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.wsf.stack.cxf.RequestHandlerImpl.handleHttpRequest(RequestHandlerImpl.java:91)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.wsf.stack.cxf.transport.ServletHelper.callRequestHandler(ServletHelper.java:169)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.wsf.stack.cxf.CXFServletExt.invoke(CXFServletExt.java:87)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:185)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:108)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.wsf.stack.cxf.CXFServletExt.service(CXFServletExt.java:135)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.wsf.spi.deployment.WSFServlet.service(WSFServlet.java:140)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:154)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)

22:05:29,028 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  at java.lang.Thread.run(Unknown Source)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1) Caused by: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/datasources/DefaultDS

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:390)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:368)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:464)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:129)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  ... 42 more

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1) Caused by: javax.resource.ResourceException: IJ000655: No managed connections available within configured blocking timeout (5000 [ms])

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreArrayListManagedConnectionPool.getConnection(SemaphoreArrayListManagedConnectionPool.java:377)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getSimpleConnection(AbstractPool.java:400)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:365)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:329)

22:05:29,044 ERROR [stderr] (http--172.20.250.76-8080-1)  ... 45 more