Problem starting connection pooling
I'm very new to MySQL, Tomcat, connection pooling, JSP, etc. and I've been banging my head against a wall for two weeks trying to get a simple program to connect to a MySQL database. *Vital Stats:* Ubuntu 9.10, Java 1.6.0_0, Java Servelet 2.5, Java Server Pages 2.1, JSTL 1.2, Apache2, Tomcat 6.0.20, MySQL 5.1.41 5.0.67 MySQL Connector/J 5.1.11 (also 5.1.10) - in $CATALINA_HOME/lib dbcp 1.2.1 - in $CATALINA_HOME/lib (all standard Ubuntu issue) *testapp/WEB-INF/web.xml:* ?xml version=1.0 encoding=ISO-8859-1? web-app xmlns=http://java.sun.com/xml/ns/javaee; xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; xsi:schemaLocation=http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd; version=2.5 description Servlet and JSP Examples. /description display-nameServlet and JSP Examples/display-name resource-ref descriptionDB Connection/description res-ref-namejdbc/mydatabase/res-ref-name res-typejavax.sql.DataSource/res-type res-authContainer/res-auth /resource-ref /web-app *testapp/META-INF/context.xml:* ?xml version=1.0 encoding=UTF-8? Context Resource name=jdbc/mydatabase auth=Container type=javax.sql.DataSource maxActive=100 maxIdle=30 maxWait=1 username=foo password=bar driverClassName=com.mysql.jdbc.Driver url=jdbc:mysql://test.hostname.com:3306/database_test1/ /Context *testapp/testapp.jsp:* %@ page contentType=text/html % %-- These libraries are required for the c and sql tags --% %@ taglib prefix=c uri=http://java.sun.com/jsp/jstl/core; % %@ taglib prefix=sql uri=http://java.sun.com/jsp/jstl/sql; % meta http-equiv=Content-Type content=text/html; charset=UTF-8 html head titleJNDI DBCP Test Page/title /head body h1JNDI DBCP Test Page/h1 br/Executing the query ... br/ %-- Note: Enter a query that is valid for your database here --% sql:query var=result dataSource=jdbc/mydatabase SELECT company FROM manuals /sql:query /body /html I create the WAR (jar cvf testapp.war *), undeploy the old version and redeploy the new one through Tomcat Web Application Manager. Then restart Tomcat (sudo /etc/init.d/tomcat restart). The result is: Jan 21, 2010 9:40:35 PM org.apache.catalina.core.ApplicationContext log INFO: ContextListener: contextInitialized() Jan 21, 2010 9:40:35 PM org.apache.catalina.core.ApplicationContext log INFO: SessionListener: contextInitialized() Jan 21, 2010 9:43:06 PM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet jsp threw exception javax.servlet.jsp.JspException: Unable to get connection, DataSource invalid: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.) at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.getConnection(Unknown Source) at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.doStartTag(Unknown Source) at org.apache.jsp.test_jsp._jspx_meth_sql_005fquery_005f0(test_jsp.java:188) at org.apache.jsp.test_jsp._jspService(test_jsp.java:138) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) Blah, Blah, Blah *More info: *The connection to MySQL tested successfully using the command line 'mysql'. There are no firewalls, that I can find, between the servers. What is going on here? What am I missing? What is going on here? How do I fix it? -Do I need to create a foo user in the tomcat-users.xml? -Do I have to mess with the policy files? or security? Thanks for your help. Mark No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.432 / Virus Database: 271.1.1/2636 - Release Date: 01/21/10 07:34:00 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Problem starting connection pooling
Alright, here is the entire log entry: Jan 21, 2010 9:40:35 PM org.apache.catalina.core.ApplicationContext log INFO: ContextListener: contextInitialized() Jan 21, 2010 9:40:35 PM org.apache.catalina.core.ApplicationContext log INFO: SessionListener: contextInitialized() Jan 21, 2010 9:43:06 PM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet jsp threw exception javax.servlet.jsp.JspException: Unable to get connection, DataSource invalid: org.apache.commons.dbcp.SQLNe stedException: Cannot create PoolableConnectionFactory (Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any pack ets from the server.) at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.getConnection(Unknown Source) at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.doStartTag(Unknown Source) at org.apache.jsp.test_jsp._jspx_meth_sql_005fquery_005f0(test_jsp.java:188) at org.apache.jsp.test_jsp._jspService(test_jsp.java:138) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:269) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAsPrivileged(Subject.java:537) at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:301) at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:283) at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:56) at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:189) at java.security.AccessController.doPrivileged(Native Method) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:636) Also, the MySQL instance I'm connecting to is hosted by dreamhost. I don't have any control over their networking configuration. Is there a command that will tell me if the --skip-networking flag was used for startup? On 1/22/2010 11:38 AM, Mark Matthews wrote: On Jan 22, 2010, at 10:21 AM, Mark Witczak wrote: [snip] I create the WAR (jar cvf testapp.war *), undeploy the old version and redeploy the new one through Tomcat Web Application Manager. Then restart Tomcat (sudo /etc/init.d/tomcat restart). The result is: Jan 21, 2010 9:40:35 PM org.apache.catalina.core.ApplicationContext log INFO: ContextListener: contextInitialized() Jan 21, 2010 9:40:35 PM org.apache.catalina.core.ApplicationContext log INFO: SessionListener: contextInitialized() Jan 21, 2010 9:43:06 PM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet jsp threw exception javax.servlet.jsp.JspException: Unable to get connection, DataSource invalid: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.) at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.getConnection(Unknown Source
Re: Problem starting connection pooling
skip-networking is OFF On 1/22/2010 12:09 PM, Mark Matthews wrote: On Jan 22, 2010, at 10:49 AM, Mark Witczak wrote: Alright, here is the entire log entry: Jan 21, 2010 9:40:35 PM org.apache.catalina.core.ApplicationContext log INFO: ContextListener: contextInitialized() Jan 21, 2010 9:40:35 PM org.apache.catalina.core.ApplicationContext log INFO: SessionListener: contextInitialized() Jan 21, 2010 9:43:06 PM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet jsp threw exception javax.servlet.jsp.JspException: Unable to get connection, DataSource invalid: org.apache.commons.dbcp.SQLNe stedException: Cannot create PoolableConnectionFactory (Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any pack ets from the server.) at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.getConnection(Unknown Source) at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.doStartTag(Unknown Source) at org.apache.jsp.test_jsp._jspx_meth_sql_005fquery_005f0(test_jsp.java:188) at org.apache.jsp.test_jsp._jspService(test_jsp.java:138) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:269) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAsPrivileged(Subject.java:537) at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:301) at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:283) at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:56) at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:189) at java.security.AccessController.doPrivileged(Native Method) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:636) Also, the MySQL instance I'm connecting to is hosted by dreamhost. I don't have any control over their networking configuration. Is there a command that will tell me if the --skip-networking flag was used for startup? Mark, In mysql, issuing show variables like 'skip_networking' should tell you. -Mark No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.432 / Virus Database: 271.1.1/2638 - Release Date: 01/22/10 07:34:00
