Re: mysql connection pooling problem
On Tue, Aug 26, 2003 at 08:25:31AM -0600, Steve Wilkinson wrote: : : I followed the example at : http://jakarta.apache.org/tomcat/tomcat-4.1-doc/printer/jndi-datasource-examples-howto.html#MySQL%20DBCP%20Example. : : The only thing I see wrong is the following line of code: : : DataSource ds = (DataSource)ctx.lookup(java:/comp/env/jdbc/testdev) : : should be java:comp/env/jdbc/testdev as already mentioned earlier. Thanks Steve. An earlier response mentioned the same typo, and I've already fixed it. But I still get the same error message. : Thus, I've attached my example for you to compare. Note, DBCP : connection pool requires additional jars as indicated in the README.txt : file. I assume you already know this, but I mention it just incase. Yep, I've got all those JARs in $CATALINA_HOME/common/lib. -- Eugene Lee http://www.coxar.pwp.blueyonder.co.uk/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mysql connection pooling problem
This is an absolute shot in the dark, but I believe you might have to put a JAR with JDBC drivers into WEB-INF/lib. Christopher Garrett III Inixoma, Incorporated - Original Message - From: Eugene Lee [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Monday, August 25, 2003 8:13 AM Subject: Re: mysql connection pooling problem Hi James, I tried inserting the context-param into web-app, no effect. But thanks for catching the typo in my JSP code in the lookup() line. Unfortunately, this had no effect either. I still get the infamous Cannot load JDBC driver class 'null' error... hurmmm... Any suggestions from others are appreciated too! Anyone? On Sat, Aug 23, 2003 at 11:09:36AM -0600, James Harman wrote: : Eugene Lee wrote: : On Sat, Aug 23, 2003 at 08:59:05AM -0600, James Harman wrote: : : : : I noticed that in the web.xml you have the jbdc resource in a : : resource-ref. In my stuff I have it as a context-param like this : : : : context-param : :param-name : : javax.servlet.jsp.jstl.sql.dataSource : :/param-name : :param-value : :jdbc/testdev : :/param-value : : /context-param : : : : This comes right after the web-app element in the web.xml file. : : : : I am not experienced enough to know the difference between context-param : : and resource-ref, but this seems to work for me. : : Another thing you might look at is your jsp code. You have : : DataSource ds = (DataSource)ctx.lookup(java:/comp/env/jdbc/testdev); : : you probably want : : DataSource ds = (DataSource)ctx.lookup(java:comp/env/jdbc/testdev); : : notice that there is no / before comp. -- Eugene Lee http://www.coxar.pwp.blueyonder.co.uk/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: mysql connection pooling problem
Or put it into tomcat4/common/lib - because then all web applications can access the JDBC driver. Rob -Original Message- From: Christopher Garrett [mailto:[EMAIL PROTECTED] Sent: 26 August 2003 10:43 To: Tomcat Users List Subject: Re: mysql connection pooling problem This is an absolute shot in the dark, but I believe you might have to put a JAR with JDBC drivers into WEB-INF/lib. Christopher Garrett III Inixoma, Incorporated - Original Message - From: Eugene Lee [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Monday, August 25, 2003 8:13 AM Subject: Re: mysql connection pooling problem Hi James, I tried inserting the context-param into web-app, no effect. But thanks for catching the typo in my JSP code in the lookup() line. Unfortunately, this had no effect either. I still get the infamous Cannot load JDBC driver class 'null' error... hurmmm... Any suggestions from others are appreciated too! Anyone? On Sat, Aug 23, 2003 at 11:09:36AM -0600, James Harman wrote: : Eugene Lee wrote: : On Sat, Aug 23, 2003 at 08:59:05AM -0600, James Harman wrote: : : : : I noticed that in the web.xml you have the jbdc resource in a : : resource-ref. In my stuff I have it as a context-param like this : : : : context-param : :param-name : : javax.servlet.jsp.jstl.sql.dataSource : :/param-name : :param-value : :jdbc/testdev : :/param-value : : /context-param : : : : This comes right after the web-app element in the web.xml file. : : : : I am not experienced enough to know the difference between context-param : : and resource-ref, but this seems to work for me. : : Another thing you might look at is your jsp code. You have : : DataSource ds = (DataSource)ctx.lookup(java:/comp/env/jdbc/testdev); : : you probably want : : DataSource ds = (DataSource)ctx.lookup(java:comp/env/jdbc/testdev); : : notice that there is no / before comp. -- Eugene Lee http://www.coxar.pwp.blueyonder.co.uk/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This e-mail is confidential and privileged. If you are not the intended recipient please accept our apologies; please do not disclose, copy or distribute information in this e-mail or take any action in reliance on its contents: to do so is strictly prohibited and may be unlawful. Please inform us that this message has gone astray before deleting it. Thank you for your co-operation. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mysql connection pooling problem
On Tue, Aug 26, 2003 at 05:43:02AM -0400, Christopher Garrett wrote: : : This is an absolute shot in the dark, but I believe you might have to : put a JAR with JDBC drivers into WEB-INF/lib. Hi Christopher, Thanks for the suggestion. But as I mentioned in my original message, I already tried this to no avail... :-/ -- Eugene Lee http://www.coxar.pwp.blueyonder.co.uk/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mysql connection pooling problem
On Tue, Aug 26, 2003 at 11:24:21AM +0100, Purvis, Robert wrote: : : Or put it into tomcat4/common/lib - because then all web applications can : access the JDBC driver. Hi Rob, Thanks for the suggestion. But as I mentioned in my original message, I already tried this to no avail. I went through all the usual spots ($CATALINA_HOME/common/lib, $JAVA_HOME/jre/lib/ext, and even my webapp's WEB-INF/lib) and got nada. -- Eugene Lee http://www.coxar.pwp.blueyonder.co.uk/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mysql connection pooling problem
Did you try this directory (to place jdbc jar files)? %CATALINA_HOME%\shared\lib\ojdbc14.jar I have a connection pool setup for Oracle, and the .jsp pages (and/or tomcat) can find the classes used if the jdbc drivers are placed in the above directory. -pl - Original Message - From: Eugene Lee [EMAIL PROTECTED] To: 'Tomcat Users List' [EMAIL PROTECTED] Sent: Tuesday, August 26, 2003 8:40 AM Subject: Re: mysql connection pooling problem On Tue, Aug 26, 2003 at 11:24:21AM +0100, Purvis, Robert wrote: : : Or put it into tomcat4/common/lib - because then all web applications can : access the JDBC driver. Hi Rob, Thanks for the suggestion. But as I mentioned in my original message, I already tried this to no avail. I went through all the usual spots ($CATALINA_HOME/common/lib, $JAVA_HOME/jre/lib/ext, and even my webapp's WEB-INF/lib) and got nada. -- Eugene Lee http://www.coxar.pwp.blueyonder.co.uk/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mysql connection pooling problem
On Tue, Aug 26, 2003 at 09:28:14AM -0400, Paul wrote: : Eugene Lee responded: : On Tue, Aug 26, 2003 at 11:24:21AM +0100, Purvis, Robert wrote: : : : : Or put it into tomcat4/common/lib - because then all web : : applications can access the JDBC driver. : : Thanks for the suggestion. But as I mentioned in my original message, : I already tried this to no avail. I went through all the usual spots : ($CATALINA_HOME/common/lib, $JAVA_HOME/jre/lib/ext, and even my webapp's : WEB-INF/lib) and got nada. : : Did you try this directory (to place jdbc jar files)? : : %CATALINA_HOME%\shared\lib\ojdbc14.jar Hi Paul, As I mentioned in my original message, I have already tried installing the driver, MySQL Connector/J 3.0.8, in all of the directories mentioned above (note that %CATALINA_HOME%\shared\lib\ is the same thing as $CATALINA_HOME/common/lib on a Unix platform). -- Eugene Lee http://www.coxar.pwp.blueyonder.co.uk/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mysql connection pooling problem
Eugene, I followed the example at http://jakarta.apache.org/tomcat/tomcat-4.1-doc/printer/jndi-datasource-examples-howto.html#MySQL%20DBCP%20Example. The only thing I see wrong is the following line of code: DataSource ds = (DataSource)ctx.lookup(java:/comp/env/jdbc/testdev) should be java:comp/env/jdbc/testdev as already mentioned earlier. Thus, I've attached my example for you to compare. Note, DBCP connection pool requires additional jars as indicated in the README.txt file. I assume you already know this, but I mention it just incase. Hope this helps, Steve Eugene Lee wrote: I'm having a really odd problem connecting to a local MySQL server. If I use java.sql.DriverManager.getConnection(), it works perfectly fine. But when I try to use a connection pool: http://www.mysql.com/articles/connection_pooling_with_connectorj.html it errors out: java.sql.SQLException: Cannot load JDBC driver class 'null' I've tried moving the MySQL driver to $CATALINA_HOME/common/lib, $JAVA_HOME/jre/lib/ext, and even my webapp's WEB-INF/lib. The results are still the same. I've followed the often-recommended Tomcat 4.1 documentation to no avail. Here's what my box is running: FreeBSD 4.8-RELEASE-p3 Java 2 SDK 1.3.1_09 Jakarta-Tomcat 4.1.27 MySQL Connector/J 3.0.8 I've attached my server.xml, my webapp's web.xml, and a test page test.jsp to demonstrate the error. BTW, before it throws the exception on the getconnection(), the page output is: con1 works! DS lookup OK! I appreciate any suggestions. Much thanks in advance. Server port=8005 shutdown=SHUTDOWN debug=0 Listener className=org.apache.catalina.mbeans.ServerLifecycleListener debug=0/ Listener className=org.apache.catalina.mbeans.GlobalResourcesLifecycleListener debug=0/ !-- Global JNDI resources -- GlobalNamingResources !-- Editable user database that can also be used by UserDatabaseRealm to authenticate users -- Resource name=UserDatabase auth=Container type=org.apache.catalina.UserDatabase description=User database that can be updated and saved /Resource ResourceParams name=UserDatabase parameter namefactory/name valueorg.apache.catalina.users.MemoryUserDatabaseFactory/value /parameter parameter namepathname/name valueconf/tomcat-users.xml/value /parameter /ResourceParams /GlobalNamingResources Service name=Tomcat-Apache Connector className=org.apache.catalina.connector.warp.WarpConnector port=8008 minProcessors=5 maxProcessors=75 enableLookups=true appBase=webapps acceptCount=10 debug=0/ Engine className=org.apache.catalina.connector.warp.WarpEngine name=Apache debug=0 Logger className=org.apache.catalina.logger.FileLogger prefix=catalina_log. suffix=.txt timestamp=true/ Host name=localhost debug=0 appBase=webapps unpackWARs=true autoDeploy=true Logger className=org.apache.catalina.logger.FileLogger directory=logs prefix=localhost_log. suffix=.txt timestamp=true/ Context path=/testdev docBase=testdev debug=0 reloadable=true crossContext=true Logger className=org.apache.catalina.logger.FileLogger prefix=testdev_log. suffix=.txt timestamp=true/ Resource name=jdbc/testdev auth=Container type=javax.sql.DataSource/ ResourceParams name=jdbc/testdev parameter namefactory/name valueorg.apache.commons.dbcp.BasicDataSourceFactory/value /parameter parameter namemaxActive/name value500/value /parameter parameter namemaxIdle/name value500/value /parameter parameter namemaxWait/name value1/value /parameter parameter nameusername/name value/value /parameter parameter namepassword/name value/value /parameter parameter namedriverClassName/name valuecom.mysql.jdbc.Driver/value /parameter parameter nameurl/name valuejdbc:mysql://localhost/testdev/value /parameter /ResourceParams /Context /Host Realm className=org.apache.catalina.realm.MemoryRealm / /Engine /Service /Server ?xml version=1.0 encoding=UTF-8? !DOCTYPE web-app PUBLIC -//Sun Microsystems, Inc.//DTD Web Application 2.3//EN http://java.sun.com/dtd/web-app_2_3.dtd; web-app id=TESTDEV display-nametestdev/display-name servlet
Re: mysql connection pooling problem
Hi James, I tried inserting the context-param into web-app, no effect. But thanks for catching the typo in my JSP code in the lookup() line. Unfortunately, this had no effect either. I still get the infamous Cannot load JDBC driver class 'null' error... hurmmm... Any suggestions from others are appreciated too! Anyone? On Sat, Aug 23, 2003 at 11:09:36AM -0600, James Harman wrote: : Eugene Lee wrote: : On Sat, Aug 23, 2003 at 08:59:05AM -0600, James Harman wrote: : : : : I noticed that in the web.xml you have the jbdc resource in a : : resource-ref. In my stuff I have it as a context-param like this : : : : context-param : :param-name : : javax.servlet.jsp.jstl.sql.dataSource : :/param-name : :param-value : :jdbc/testdev : :/param-value : : /context-param : : : : This comes right after the web-app element in the web.xml file. : : : : I am not experienced enough to know the difference between context-param : : and resource-ref, but this seems to work for me. : : Another thing you might look at is your jsp code. You have : : DataSource ds = (DataSource)ctx.lookup(java:/comp/env/jdbc/testdev); : : you probably want : : DataSource ds = (DataSource)ctx.lookup(java:comp/env/jdbc/testdev); : : notice that there is no / before comp. -- Eugene Lee http://www.coxar.pwp.blueyonder.co.uk/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mysql connection pooling problem
Eugene, I noticed that in the web.xml you have the jbdc resource in a resource-ref. In my stuff I have it as a context-param like this context-param param-name javax.servlet.jsp.jstl.sql.dataSource /param-name param-value jdbc/testdev /param-value /context-param This comes right after the web-app element in the web.xml file. I am not experienced enough to know the difference between context-param and resource-ref, but this seems to work for me. James Eugene Lee wrote: I'm having a really odd problem connecting to a local MySQL server. If I use java.sql.DriverManager.getConnection(), it works perfectly fine. But when I try to use a connection pool: http://www.mysql.com/articles/connection_pooling_with_connectorj.html it errors out: java.sql.SQLException: Cannot load JDBC driver class 'null' I've tried moving the MySQL driver to $CATALINA_HOME/common/lib, $JAVA_HOME/jre/lib/ext, and even my webapp's WEB-INF/lib. The results are still the same. I've followed the often-recommended Tomcat 4.1 documentation to no avail. Here's what my box is running: FreeBSD 4.8-RELEASE-p3 Java 2 SDK 1.3.1_09 Jakarta-Tomcat 4.1.27 MySQL Connector/J 3.0.8 I've attached my server.xml, my webapp's web.xml, and a test page test.jsp to demonstrate the error. BTW, before it throws the exception on the getconnection(), the page output is: con1 works! DS lookup OK! I appreciate any suggestions. Much thanks in advance. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mysql connection pooling problem
On Sat, Aug 23, 2003 at 08:59:05AM -0600, James Harman wrote: : : Eugene, : : I noticed that in the web.xml you have the jbdc resource in a : resource-ref. In my stuff I have it as a context-param like this : : context-param :param-name : javax.servlet.jsp.jstl.sql.dataSource :/param-name :param-value :jdbc/testdev :/param-value : /context-param : : This comes right after the web-app element in the web.xml file. : : I am not experienced enough to know the difference between context-param : and resource-ref, but this seems to work for me. I'm using resource-ref because that's what the Tomcat docs say. :-) http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jndi-datasource-examples-howto.html#MySQL%20DBCP%20Example I'll try it out later today and report back with the results. -- Eugene Lee http://www.coxar.pwp.blueyonder.co.uk/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: mysql connection pooling problem
Another thing you might look at is your jsp code. You have DataSource ds = (DataSource)ctx.lookup(java:/comp/env/jdbc/testdev); you probably want DataSource ds = (DataSource)ctx.lookup(java:comp/env/jdbc/testdev); notice that there is no / before comp. James Eugene Lee wrote: On Sat, Aug 23, 2003 at 08:59:05AM -0600, James Harman wrote: : : Eugene, : : I noticed that in the web.xml you have the jbdc resource in a : resource-ref. In my stuff I have it as a context-param like this : : context-param :param-name : javax.servlet.jsp.jstl.sql.dataSource :/param-name :param-value :jdbc/testdev :/param-value : /context-param : : This comes right after the web-app element in the web.xml file. : : I am not experienced enough to know the difference between context-param : and resource-ref, but this seems to work for me. I'm using resource-ref because that's what the Tomcat docs say. :-) http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jndi-datasource-examples-howto.html#MySQL%20DBCP%20Example I'll try it out later today and report back with the results. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
