Create connection poolin in tomcat

Hi,
Can any one tell me how to create connection pooling in tomcat server?
is it possible to create connection pooling in tomcat?
thanks,
prabhu selvakumar.

can u send that URL bradmallan?Good grief. What size spoon do you need?
http://tomcat.apache.org/tomcat-6.0-doc/jndi-datasource-examples-howto.html
~

Similar Messages

How to create connection pooling in Tomcat 5.0

present i am developing one web site in that i am using tomcat 5.0
i am trying to establish connection pooling in tomcat,i am facing some problems..
tomcat throws the following exception ie.,
cannot create JDBC Driver class for connect URL null.
my code lik this
i configured the web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app>
<resource-ref>
<description>Oracle Datasource example</description>
<res-ref-name>sqlserver</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
my server.xml
<?xml version='1.0' encoding='utf-8'?>
<Server>
<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"/>
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
<GlobalNamingResources>
<Environment name="simpleValue" type="java.lang.Integer" value="30"/>
<Resource auth="Container" description="User database that can be updated and saved" name="UserDatabase" type="org.apache.catalina.UserDatabase"/>
<Resource auth="Container" name="sqlserver" type="javax.sql.DataSource"/>
<ResourceParams name="UserDatabase">
<parameter>
<name>factory</name>
<value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
</parameter>
<parameter>
<name>password</name>
<value>sudha</value>
</parameter>
<parameter>
<name>pathname</name>
<value>conf/tomcat-users.xml</value>
</parameter>
<parameter>
<name>username</name>
<value>sudha</value>
</parameter>
</ResourceParams>
<ResourceParams name="sqlserver">
<parameter>
<name>url</name>
<value>jdbc:odbc:SQL</value>
</parameter>
<parameter>
<name>validationQuery</name>
<value>select * from employee</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>4</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>8</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>sun.jdbc.odbc.JdbcOdbcDriver</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>5000</value>
</parameter>
<parameter>
<name>username</name>
<value>kpi</value>
</parameter>
<parameter>
<name>factory</name>
<value>org.apache.naming.factory.DbcpDataSourceFactory</value>
</parameter>
<parameter>
<name>password</name>
<value>kpi</value>
</parameter>
</ResourceParams>
</GlobalNamingResources>
<Service name="Catalina">
<Connector acceptCount="100" connectionTimeout="20000" disableUploadTimeout="true" port="8080" redirectPort="8443" maxSpareThreads="75" maxThreads="150" minSpareThreads="25">
</Connector>
<Connector port="8009" protocol="AJP/1.3" protocolHandlerClassName="org.apache.jk.server.JkCoyoteHandler" redirectPort="8443">
</Connector>
<Engine defaultHost="localhost" name="Catalina">
<Host appBase="webapps" name="localhost">
<Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_log." suffix=".txt" timestamp="true"/>
</Host>
<Logger className="org.apache.catalina.logger.FileLogger" prefix="catalina_log." suffix=".txt" timestamp="true"/>
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"/>
</Engine>
</Service>
</Server>
and i studied the the tomcat documentation in that tomcat mentioned
The configuration properties for Tomcat's standard data source resource factory (org.apache.naming.factory.DbcpDataSourceFactory) are as follows:
driverClassName - Fully qualified Java class name of the JDBC driver to be used.
maxActive - The maximum number of active instances that can be allocated from this pool at the same time.
maxIdle - The maximum number of connections that can sit idle in this pool at the same time.
maxWait - The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception.
password - Database password to be passed to our JDBC driver.
url - Connection URL to be passed to our JDBC driver. (For backwards compatibility, the property driverName is also recognized.)
user - Database username to be passed to our JDBC driver.
validationQuery - SQL query that can be used by the pool to validate connections before they are returned to the application. If specified, this query MUST be an SQL SELECT statement that returns at least one row.
how to configure server.xml file
and how to get the org.apache.naming.factory.DbcpDataSourceFactory
please help me...this module is very very urgen to me..

http://jakarta.apache.org/tomcat/tomcat-5.0-doc/jndi-datasource-examples-howto.html

How to create Connection pool in Tomcat 5

present i am developing one web site in that i am using tomcat 5.
i am trying to establish connection pooling in tomcat,i am facing some problems..
tomcat throws the following exception ie.,
cannot create JDBC Driver class for connect URL null.
my code lik this
i configured the web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app>
<resource-ref>
<description>Oracle Datasource example</description>
<res-ref-name>sqlserver</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
my server.xml
<?xml version='1.0' encoding='utf-8'?>
<Server>
<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"/>
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
<GlobalNamingResources>
<Environment name="simpleValue" type="java.lang.Integer" value="30"/>
<Resource auth="Container" description="User database that can be updated and saved" name="UserDatabase" type="org.apache.catalina.UserDatabase"/>
<Resource auth="Container" name="sqlserver" type="javax.sql.DataSource"/>
<ResourceParams name="UserDatabase">
<parameter>
<name>factory</name>
<value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
</parameter>
<parameter>
<name>password</name>
<value>sudha</value>
</parameter>
<parameter>
<name>pathname</name>
<value>conf/tomcat-users.xml</value>
</parameter>
<parameter>
<name>username</name>
<value>sudha</value>
</parameter>
</ResourceParams>
<ResourceParams name="sqlserver">
<parameter>
<name>url</name>
<value>jdbc:odbc:SQL</value>
</parameter>
<parameter>
<name>validationQuery</name>
<value>select * from employee</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>4</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>8</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>sun.jdbc.odbc.JdbcOdbcDriver</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>5000</value>
</parameter>
<parameter>
<name>username</name>
<value>kpi</value>
</parameter>
<parameter>
<name>factory</name>
<value>org.apache.naming.factory.DbcpDataSourceFactory</value>
</parameter>
<parameter>
<name>password</name>
<value>kpi</value>
</parameter>
</ResourceParams>
</GlobalNamingResources>
<Service name="Catalina">
<Connector acceptCount="100" connectionTimeout="20000" disableUploadTimeout="true" port="8080" redirectPort="8443" maxSpareThreads="75" maxThreads="150" minSpareThreads="25">
</Connector>
<Connector port="8009" protocol="AJP/1.3" protocolHandlerClassName="org.apache.jk.server.JkCoyoteHandler" redirectPort="8443">
</Connector>
<Engine defaultHost="localhost" name="Catalina">
<Host appBase="webapps" name="localhost">
<Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_log." suffix=".txt" timestamp="true"/>
</Host>
<Logger className="org.apache.catalina.logger.FileLogger" prefix="catalina_log." suffix=".txt" timestamp="true"/>
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"/>
</Engine>
</Service>
</Server>
and i studied the the tomcat documentation in that tomcat mentioned
The configuration properties for Tomcat's standard data source resource factory (org.apache.naming.factory.DbcpDataSourceFactory) are as follows:
driverClassName - Fully qualified Java class name of the JDBC driver to be used.
maxActive - The maximum number of active instances that can be allocated from this pool at the same time.
maxIdle - The maximum number of connections that can sit idle in this pool at the same time.
maxWait - The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception.
password - Database password to be passed to our JDBC driver.
url - Connection URL to be passed to our JDBC driver. (For backwards compatibility, the property driverName is also recognized.)
user - Database username to be passed to our JDBC driver.
validationQuery - SQL query that can be used by the pool to validate connections before they are returned to the application. If specified, this query MUST be an SQL SELECT statement that returns at least one row.
how to configure server.xml file
and how to get the org.apache.naming.factory.DbcpDataSourceFactory
please help me...this module is very very urgen to me..

I spent many hours when i first implemented connection pooling trying to put it together. The information is scattered and the config has changed slightly from 5.0 to 5.5 etc. This is how I got it working in 5.5.17:
* server.xml seems to be a wrong place for the pool configuration if you consider it to be an application specific thing. It might be a better idea to put it into C:\tomcat55\conf\Catalina\localhost\ConfigFileForYourWeapp.xml as follows:
<Context path="/ClientLink" docBase="C:\eclipseWorkspace\PortfolioUI3\WebRoot">
      <Resource name="jdbc/testportfolios" auth="Container"
                     type="javax.sql.DataSource"
                     factory="org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory"
                     username="****" password="******"
                     driverClassName="com.mysql.jdbc.Driver"
                     url="jdbc:mysql://192.168.0.101:3306/testportfolios?user=***********&password=***********&useUnicode=true&characterSet=swedish"
                     maxWait="10000" maxActive="30" maxIdle="10" removeAbandoned="true"
                     removeAbandonedTimeout="60" logAbandoned="true" testWhileIdle="true"
                     minEvictableIdleTimeMillis="4000"
                     timeBetweenEvictionRunsMillis="60000" validationQuery="SELECT '1'" />
      </Context>* Then add the following snippet into web.xml in your webapp directory:
<resource-ref>
                <description>Database pool defined in ClientLink.xml</description>
                <res-ref-name>jdbc/testportfolios</res-ref-name>
                <res-type>javax.sql.DataSource</res-type>
                <res-auth>Container</res-auth>
           </resource-ref>* Next put the jdbc-driver jar in a place where tomcat can find it. That is common\lib. Note that the shared/lib does not work.
* Get connections in java as follows:
                try {
                     Context initCtx = new InitialContext();
                     DataSource ds = (DataSource) initCtx.lookup("java:comp/env/jdbc/testportfolios");
                     this.connection = ds.getConnection();
                } catch (NamingException e) {
                     throw new RuntimeException("Java naming exception when getting connection from tomcat pool: " + e.getMessage());
                }I hope that this helps you to save the time I lost figuring this out!
Message was edited by:
Tomppu

Database connection Pooling in TOMCAT

I am trying Database connection Pooling in TOMCAT
I am getting the following error
org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
My Web.xml in $CATALINA_HOME\conf\web.xml
<resource-ref>
<res-ref-name>WMSPREF</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
and my server.xml in
$CATALINA_HOME\conf\server.xml
<ResourceParams name="WMSPREF">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>oracle.jdbc.driver.OracleDriver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:oracle:thin:@10.94.100.148:1521:WMSPREF</value>
</parameter>
<parameter>
<name>username</name>
<value>wmsmigrate</value>
</parameter>
<parameter>
<name>password</name>
<value>abnwms</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>20</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>10</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>-1</value>
</parameter>
</ResourceParams>
And my database.jsp : code
     Context ctx = new InitialContext();
     Context envContext = (Context)ctx.lookup("java:comp/env");
     DataSource ds = (DataSource)envContext.lookup("WMSPREF");
     conn = ds.getConnection();

What version of Tomcat do you have? 4? 5? 5.5?
Have you defined a Resource entry in server.xml as well as the ResourceParams?
I have never had any luck configuring a datasource in the server.xml file.
What HAS worked for me is putting the config into a myWebApp.xml file.
My web context is "myWebApp"
The name of the file is "myWebApp.xml"
For Tomcat4 for this goes in the webapps directory
For Tomcat5 this goes in the [TOMCAT_HOME]/conf/Catalina/localhost directory
<?xml version='1.0' encoding='utf-8'?>
<Context path="/myWebApp" docBase="myWebApp" debug="1" reloadable="true" crossContext="true" >
<Resource name="WMSPREF" auth="Container"
              type="javax.sql.DataSource">
</Resource>
<ResourceParams name="WMSPREF">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>oracle.jdbc.driver.OracleDriver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:oracle:thin:@10.94.100.148:1521:WMSPREF</value>
</parameter>
<parameter>
<name>username</name>
<value>wmsmigrate</value>
</parameter>
<parameter>
<name>password</name>
<value>abnwms</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>20</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>10</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>-1</value>
</parameter>
</ResourceParams>
</Context>Cheers,
evnafets

Problem with creating Connection pool and JNDI, driver is not detected

Hi,
I have an issue with creating Connection Pool and JNDI.
I'm using:
- JDK 1.6
- OS: Linux(ubuntu 8.10)
- Netbeans IDE 6.5.1
- Java EE 5.0
- Apache Tomcat 6.0.18 Its lib directory contains all necessary jar files for Oracle database driver
- Oracle 11g Enterprise
My problem is that the Oracle database driver is not detected when I want to create a pool (it works pretty well and is detected without any problem when I create ordinary connection by DriverManager)
Therefore after running:
InitialContext ic = new InitialContext();
Context context = (Context)ic.lookup("java:comp/env");
DataSource dataSource = (DataSource)context.lookup("jdbc/oracle11g");
Connection connection = dataSource.getConnection();and right after dataSource.getConnection() I have the following exception:
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'oracle.jdbc.OracleDriver'
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1136)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
at servlets.Servlet1.doPost(Servlet1.java:47)
at servlets.Servlet1.doGet(Servlet1.java:29)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
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:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at sun.misc.Launcher$ExtClassLoader.findClass(Launcher.java:229)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1130)
... 17 more
My application context file (context.xml) is:
<?xml version="1.0" encoding="UTF-8"?>
<Context path="/WebApplication3">
<Resource auth="Container"
                  driverClassName="oracle.jdbc.OracleDriver"
                  maxActive="8"
                  maxIdle="4"
                  name="jdbc/oracle11g"
                  username="scott"
                  password="tiger"
                  type="javax.sql.DataSource"
                  url="jdbc:oracle:thin:@localhost:1521:database01" />
</Context>and my web.xml is:
    <resource-ref>
        <description>Oracle Datasource example</description>
        <res-ref-name>jdbc/oracle11g</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
    </resource-ref>
...I found similar threads in different forums including sun, such as
http://forums.sun.com/thread.jspa?threadID=567630&start=0&tstart=0
http://forums.sun.com/thread.jspa?threadID=639243&tstart=0
http://forums.sun.com/thread.jspa?threadID=5312178&tstart=0
, but no solution.
As many suggest, I also tried to put context directly in the server.xml (instead of my application context) and referencing it by <ResourceLink /> inside my application context but it didn't work and instead it gave me the following message:
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '   ' for connect URL 'null'
Has anyone succeeded in creating a connection pool with JNDI by using Tomcat 6 or higher ? If yes, could kindly explain about the applied method.
Regards,

Hello again,
Finally I managed to run my application also with Tomcat 6.0.18. There was only two lines that had to be modified
in the context.xml file (the context of my application project and not server's)
Instead of writing
<Context antiJARLocking="true" path="/WebApplication2">
    type="javax.sql.DataSource"
    factory="org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory"
</Context>we had to write:
<Context antiJARLocking="true" path="/WebApplication2">
    type="oracle.jdbc.pool.OracleDataSource"
    factory="oracle.jdbc.pool.OracleDataSourceFactory"
</Context>- No modification was needed to be done at server level (niether server.xml nor server context.xml)
- I just added the ojdbc6.jar in $CATALINA_HOME/lib (I didn't even need to add it in WEB-INF/lib of my project)
- The servlet used to do the test was the same that I presented in my precedent post.
For those who have encountered my problem and are interested in the format of the web.xml and context.xml
with Tomcat 6.0, you can find them below:
Oracle server: Oracle 11g Enterprise
Tomcat server version: 6.0.18
Oracle driver: ojdbc.jar
IDE: Netbeans 6.5.1
The context.xml file of the web application
<?xml version="1.0" encoding="UTF-8"?>
<Context antiJARLocking="true" path="/WebApplication2">
    <Resource name="jdbc/oracle11g"
              type="oracle.jdbc.pool.OracleDataSource"
              factory="oracle.jdbc.pool.OracleDataSourceFactory"
              url="jdbc:oracle:thin:@localhost:1521:database01"
              driverClassName="oracle.jdbc.OracleDriver"
              userName="scott"
              password="tiger"
              auth="Container"
              maxActive="100"
              maxIdle="30"
              maxWait="10000"
              logAbandoned="true"
              removeAbandoned="true"
              removeAbandonedTimeout="60" />
</Context>The web.xml of my web application
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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">
    <resource-ref>
        <description>Oracle Database 11g DataSource</description>
        <res-type>oracle.jdbc.pool.OracleDataSource</res-type>
        <res-auth>Container</res-auth>
        <res-ref-name>jdbc/oracle11g</res-ref-name>
    </resource-ref>
    <servlet>
        <servlet-name>Servlet1</servlet-name>
        <servlet-class>servlets.Servlet1</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>Servlet1</servlet-name>
        <url-pattern>/Servlet1</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>Ok, now I'm happy as the original problem is completely solved
Regards

Connection pooling in Tomcat

Hello all,
I've been using tomcat 5.0.27 and for quite sometime now using the connection pooling on tomcat as well.
I configure DataSource(no.of connections,username, password etc) by logging into tomcat admin console.
But what I've seen is it adds datasource configuration data into server.xml - including the username and password to the database(which will be supplied to the driver by the container when creating a connection). But I don't want the username and password to be present in the xml file (i.e. in clear text format). Is it possible to somehow give the password and the username when requesting for a connection i.e. datasource.getConnection and not while configuring the pool and still get it working?
Please guide me.
Thanks,

Oh yeah. I've already tried it. It always seems to
get the connection with the credentials that I gave
while configuring the datasource. Whatever password I
pass in the call to getConnection - it is being
ignored.Do you have one already set in the server.xml? If so, try removing it (and restarting the server).
But an implication - the server might just decide to
have say x connections in the pool on startup. So if
you havent given the uname/password for the
database(when you configured the datasource) and give
the credentials only when getConnection is called in
your code - how will the server have those x
connections in the pool on startup?Probably won't It may wait to store the connections to the pool until x number of calls to the getConnection method are made (like a lazy initialization). But I don't know, just getting around to testing now.
I have people telling me that having uname/password to
the database in server.xml doesn't augur well for the
security of data in the db :(It could be true, but
1) The only people to see the server.xml are those who work on the server. The server.xml (or better the context.xml if you can avoid editing the server.xml altogether) is not accessable from the web.
2) My strategy was always to create many different levels of access to any particular database. Some with Read Only access and limited table viewability, and then progressively higher access. You give the server.xml only the access they absolutely need. IE, if they are just retrieving data from a couple tables, make a read-only user with the ability to see only those tables...
Don't take my word for it though. I have never really tried to do the whole ultra-secure thing, my apps are not important.

Cannot create DataSource, Exception in Tomcat 4.1

I am running into a major problem with Tomcat4.1 trying to access a Datasource.
I referenced about 7 articles one of which has the subject "Cannot create JDBC driver of class '' for connect URL 'null', cause..."
but he is using Tomcat 5. I even tried to simulate his solution to mine but still no use.
I tried to connect to the database the old fashion way and it worked... I get connected (JDBC connection w/o Datasource).
I changed the XML many times but with no luck. I must be doing something stupid that I can't see.
Any help is greatly appreciated.... I ran out of solutions...
I initially loaded my app through Tomcat manager and created the DataSource through Tomcat admin screen.
my CLASSPATH =
C:\J4Log\logging-log4j-1.2.9\dist\lib\log4j-1.2.9.jar;
C:\JBoss4-0\jboss-4.0.1sp1;C:\CONNX32\CONNXJDBC\JAVA\JAR\connxjdbc.jar;
C:\JBuilderX\lib\mysql-connector-java-3.0.15-ga-bin.jar;
C:\Program Files\Apache Group\Tomcat 4.1\common\lib\commons-dbcp-1.2.1.jar;
C:\Program Files\Apache Group\Tomcat 4.1\common\lib\commons-pool-1.1.jar;
C:\Program Files\Apache Group\Tomcat 4.1\common\lib\commons-collections-3.1.jar;
C:\Program Files\Apache Group\Tomcat 4.1\common\lib\mysql-connector-java-3.1.8-bin.jar
my web.xml =
<resource-ref>
    <description>DB connection</description>
    <res-ref-name>jdbc/MyDBASE</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
</resource-ref>-------------------
The sample snipet to connect to the database (which works)
ConnectionHelper contains the following (simplified)...
     Class.forName("com.mysql.jdbc.Driver").newInstance();
     return DriverManager.getConnection("jdbc:mysql://10.0.3.52/MyDBASE?user=Myadmin&password=AdminPWD");
ConnectionHelper connectionHelper = new ConnectionHelper();
Statement st = null;
try {
    Connection conn = connectionHelper.getConnection();
    st = conn.createStatement();
    System.out.println("\n=========== ssuucceessffullllllll=======\n");
catch (SQLException ex1) {
     System.out.println("error connecting=================");
     ex1.printStackTrace();
whenever i execute my JSP (which calls my java class .. code follows....
Context envCtx = (Context) init.lookup("java:comp/env");
       DataSource ds = (DataSource)envCtx.lookup("jdbc/MyDBASE");it breaks on the DataSource giving..
org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '
' for connect URL 'null', cause:
java.sql.SQLException: No suitable driver
        at java.sql.DriverManager.getDriver(DriverManager.java:243)
        at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSou
rce.java:743)
        at org.apache.commons.dbcp.BasicD.........--
Another error (which is from within the IDE) is
java.lang.NoClassDefFoundError: tyrex/jdbc/xa/EnabledDataSource     at rg.apache.naming.factory.TyrexDataSourceFactory.getObjectInstance(TyrexDataSourceFactory.java:166)
     at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:164)
     at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:301)
     at org.apache.naming.NamingContext.lookup(NamingContext.java:834)
     at org.apache.naming.NamingContext.lookup(NamingContext.java:181)
     at org.apache.naming.NamingContext.lookup(NamingContext.java:822)
     at org.apache.naming.NamingContext.lookup(NamingContext.java:194)
     at simpleservlet.TestJSPBean.init(TestJSPBean.java:41)
     at org.apache.jsp.testJSP$jsp._jspService(testJSP$jsp.java:115)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)--------------------------
and finally, Server.XML...
<?xml version='1.0' encoding='utf-8'?>
<Server className="org.apache.catalina.core.StandardServer" debug="0" port="8005" shutdown="SHUTDOWN">
<Listener className="org.apache.ajp.tomcat4.config.ApacheConfig"/>
<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" debug="0" jsr77Names="false"/>
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" debug="0"/>
<GlobalNamingResources>
    <Environment name="simpleValue" override="true" type="java.lang.Integer" value="30"/>
    <Resource name="jdbc/MyDBASE" scope="Shareable" type="javax.sql.DataSource"/>
    <ResourceParams name="jdbc/MyDBASE">
      <parameter>
        <name>validationQuery</name>
        <value>select now()</value>
      </parameter>
      <parameter>
        <name>url</name>
        <value>jdbc:mysql://10.0.3.52/MyDBASE?autoReconnect=true</value>
      </parameter>
      <parameter>
        <name>password</name>
        <value>AdminPWD</value>
      </parameter>
      <parameter>
        <name>maxActive</name>
        <value>4</value>
      </parameter>
      <parameter>
        <name>maxWait</name>
        <value>5000</value>
      </parameter>
      <parameter>
        <name>driverClassName</name>
         <value>org.gjt.mm.mysql.Driver</value>
      </parameter>
      <parameter>
        <name>username</name>
        <value>Myadmin</value>
      </parameter>
      <parameter>
        <name>maxIdle</name>
        <value>2</value>
      </parameter>
    </ResourceParams>
</GlobalNamingResources>
<Service className="org.apache.catalina.core.StandardService" debug="0" name="Tomcat-Standalone">
    <Engine className="org.apache.catalina.core.StandardEngine"
               debug="0" defaultHost="localhost"
               mapperClass="org.apache.catalina.core.StandardEngineMapper"
               name="Standalone">
      <Host className="org........
        <Context className="org.apache.catalina.core.StandardContext" cachingAllowed="true"
                  charsetMapperClass="org.apache.catalina.util.CharsetMapper"
                  cookies="true" crossContext="false" debug="0"
                  displayName="simpleservlet"
                  docBase="/WebModule1" mapperClass="org.apache.catalina.core.StandardContextMapper"
                  path="/WebModule1" privileged="false" reloadable="false" swallowOutput="false"
                  useNaming="true"
                  workDir="work\Standalone\localhost\WebModule1"
                  wrapperClass="org.apache.catalina.core.StandardWrapper">
             <Resource auth="Container"
                        description="DB connection"
                        name="jdbc/MyDBASE" scope="Shareable"
                        type="javax.sql.DataSource"/>
       </Context>
    </Engine>
</Service>
</Server>Thanks in advance for ANY help.

I am running into a major problem with Tomcat4.1 trying to access a Datasource.
I referenced about 7 articles one of which has the subject "Cannot create JDBC driver of class '' for connect URL 'null', cause..."
but he is using Tomcat 5. I even tried to simulate his solution to mine but still no use.
I tried to connect to the database the old fashion way and it worked... I get connected (JDBC connection w/o Datasource).
I changed the XML many times but with no luck. I must be doing something stupid that I can't see.
Any help is greatly appreciated.... I ran out of solutions...
I initially loaded my app through Tomcat manager and created the DataSource through Tomcat admin screen.
my CLASSPATH =
C:\J4Log\logging-log4j-1.2.9\dist\lib\log4j-1.2.9.jar;
C:\JBoss4-0\jboss-4.0.1sp1;C:\CONNX32\CONNXJDBC\JAVA\JAR\connxjdbc.jar;
C:\JBuilderX\lib\mysql-connector-java-3.0.15-ga-bin.jar;
C:\Program Files\Apache Group\Tomcat 4.1\common\lib\commons-dbcp-1.2.1.jar;
C:\Program Files\Apache Group\Tomcat 4.1\common\lib\commons-pool-1.1.jar;
C:\Program Files\Apache Group\Tomcat 4.1\common\lib\commons-collections-3.1.jar;
C:\Program Files\Apache Group\Tomcat 4.1\common\lib\mysql-connector-java-3.1.8-bin.jar
my web.xml =
<resource-ref>
    <description>DB connection</description>
    <res-ref-name>jdbc/MyDBASE</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
</resource-ref>-------------------
The sample snipet to connect to the database (which works)
ConnectionHelper contains the following (simplified)...
     Class.forName("com.mysql.jdbc.Driver").newInstance();
     return DriverManager.getConnection("jdbc:mysql://10.0.3.52/MyDBASE?user=Myadmin&password=AdminPWD");
ConnectionHelper connectionHelper = new ConnectionHelper();
Statement st = null;
try {
    Connection conn = connectionHelper.getConnection();
    st = conn.createStatement();
    System.out.println("\n=========== ssuucceessffullllllll=======\n");
catch (SQLException ex1) {
     System.out.println("error connecting=================");
     ex1.printStackTrace();
whenever i execute my JSP (which calls my java class .. code follows....
Context envCtx = (Context) init.lookup("java:comp/env");
       DataSource ds = (DataSource)envCtx.lookup("jdbc/MyDBASE");it breaks on the DataSource giving..
org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '
' for connect URL 'null', cause:
java.sql.SQLException: No suitable driver
        at java.sql.DriverManager.getDriver(DriverManager.java:243)
        at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSou
rce.java:743)
        at org.apache.commons.dbcp.BasicD.........--
Another error (which is from within the IDE) is
java.lang.NoClassDefFoundError: tyrex/jdbc/xa/EnabledDataSource     at rg.apache.naming.factory.TyrexDataSourceFactory.getObjectInstance(TyrexDataSourceFactory.java:166)
     at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:164)
     at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:301)
     at org.apache.naming.NamingContext.lookup(NamingContext.java:834)
     at org.apache.naming.NamingContext.lookup(NamingContext.java:181)
     at org.apache.naming.NamingContext.lookup(NamingContext.java:822)
     at org.apache.naming.NamingContext.lookup(NamingContext.java:194)
     at simpleservlet.TestJSPBean.init(TestJSPBean.java:41)
     at org.apache.jsp.testJSP$jsp._jspService(testJSP$jsp.java:115)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)--------------------------
and finally, Server.XML...
<?xml version='1.0' encoding='utf-8'?>
<Server className="org.apache.catalina.core.StandardServer" debug="0" port="8005" shutdown="SHUTDOWN">
<Listener className="org.apache.ajp.tomcat4.config.ApacheConfig"/>
<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" debug="0" jsr77Names="false"/>
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" debug="0"/>
<GlobalNamingResources>
    <Environment name="simpleValue" override="true" type="java.lang.Integer" value="30"/>
    <Resource name="jdbc/MyDBASE" scope="Shareable" type="javax.sql.DataSource"/>
    <ResourceParams name="jdbc/MyDBASE">
      <parameter>
        <name>validationQuery</name>
        <value>select now()</value>
      </parameter>
      <parameter>
        <name>url</name>
        <value>jdbc:mysql://10.0.3.52/MyDBASE?autoReconnect=true</value>
      </parameter>
      <parameter>
        <name>password</name>
        <value>AdminPWD</value>
      </parameter>
      <parameter>
        <name>maxActive</name>
        <value>4</value>
      </parameter>
      <parameter>
        <name>maxWait</name>
        <value>5000</value>
      </parameter>
      <parameter>
        <name>driverClassName</name>
         <value>org.gjt.mm.mysql.Driver</value>
      </parameter>
      <parameter>
        <name>username</name>
        <value>Myadmin</value>
      </parameter>
      <parameter>
        <name>maxIdle</name>
        <value>2</value>
      </parameter>
    </ResourceParams>
</GlobalNamingResources>
<Service className="org.apache.catalina.core.StandardService" debug="0" name="Tomcat-Standalone">
    <Engine className="org.apache.catalina.core.StandardEngine"
               debug="0" defaultHost="localhost"
               mapperClass="org.apache.catalina.core.StandardEngineMapper"
               name="Standalone">
      <Host className="org........
        <Context className="org.apache.catalina.core.StandardContext" cachingAllowed="true"
                  charsetMapperClass="org.apache.catalina.util.CharsetMapper"
                  cookies="true" crossContext="false" debug="0"
                  displayName="simpleservlet"
                  docBase="/WebModule1" mapperClass="org.apache.catalina.core.StandardContextMapper"
                  path="/WebModule1" privileged="false" reloadable="false" swallowOutput="false"
                  useNaming="true"
                  workDir="work\Standalone\localhost\WebModule1"
                  wrapperClass="org.apache.catalina.core.StandardWrapper">
             <Resource auth="Container"
                        description="DB connection"
                        name="jdbc/MyDBASE" scope="Shareable"
                        type="javax.sql.DataSource"/>
       </Context>
    </Engine>
</Service>
</Server>Thanks in advance for ANY help.

Connection pool + db2 + tomcat 5 migration problem

I succeded in using connection pooling in Tomcat 4.0.x and IBM db2 6.xx and 7.xx.
Now I am trying to use Tomcat 5 (released with netbeans 3.6) and I have some problems.
I migrated the context information from server xml to context xml, but I have a username-password problem
<Context docBase="D:\j2sdk_nb\NetBeans3.6\progetti\Pegaso2" path="/pegaso2" reloadable="true">
<Resource auth="Container" name="jdbc/pegaso61" type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/pegaso61">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>COM.ibm.db2.jdbc.app.DB2Driver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:db2:pegaso61</value>
</parameter>
<parameter>
<name>username</name>
<value>userxxxx</value>
</parameter>
<parameter>
<name>password</name>
<value>passxxxx</value>
</parameter>
</ResourceParams>
</Context>
When running my servlets, i get this error:
Exception in PoolDB2Connector.getConnection():org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory, cause: [IBM][CLI Driver] SQL1403N The username and/or password supplied is incorrect. SQLSTATE=08004
So it means ( I think !!) that the web-application i getting the right driver ( i got a db2 error) but is having problem with username and password.
I am using getConnection() method ( with no argouments) in my PoolDB2Connecto class (according to the documentation the getConnection(user,password) method is not supported)
I have a parallel installation of netbeans 3.5.1 (tomcat 4.0.6) with the same parameters (username, password, url...) and is still perfectly working
Any help will be greatly appreciated,
Andrea

OK, I found the problem !
It is not due to any configuration issue, but it is due to a BUG in tomcat 5.xx
I reproduced the problem with mysql db server other than db2 db servver.
The problem is the presence of the $ sign in the users' s password !!!!
Probably the xml parser rading server.xml introduce some error finding $ sign.
The problem is still present in the 5.028 version of tomcat.
If i modify user's password REMOVING $ sign, everything is OK
Perhaps $ sign should be escaped (?!?)
Andrea

How to configure connection pooling in tomcat?

how to configure connection pooling in tomcat and how to use the connection pooling in the jsp and servlets?

thanks for the reply, i have configured the connection pool settings in the tomcat.
I created a class with static method, which will return the connection object.
whenever i need the connection object, iam invoking the static method, once its usage is over iam closing thew connection..
is it the right way of using the connection object in the web application.

Problem with EJB and JMS - Failed to obtain/create connection

hello ejb and jms programmers,
My problem is my topic MDB keep on retrieving the same message when there is a database connection failure. Maybe somebody could help me how to prevent to retrieve the same data?
Given:
- I purposedly turn off the pointbase database because im testing my error handling.
- Im using SJSAS 8 as my application server.
- My message Driven Bean of topic type.
- Im using CMP for my entity bean
Here is the scenario of whats happening - step by step:
1. A separate application publishes a message to JMS queue server
2. My MDB retrieves this message and do some processing then inserts a record (transaction history) in my database
3. But my db is turned off or down
4. My MDB sends a successful processing reply to the JMS queue server
5. Then i noticed that my server.log keeps on growing so when i opened it, the record was not inserted and printed the stacktrace below "RAR5117 : Failed to obtain/create connection. Reason : javax.transaction.SystemException" (complete stacktrace below)
6. I understand the cause of the stacktrace is because the DB is turned off. But what i dont understand is that my MDB keeps on reading the same message. Since my MDB is of topic type, isnt a topic MDB supposedly reads a message only once???
So my questions are:
1. how do i handle insert database error?
2. how can i stop my MDB from processing the same message?
3. any better suggestions?
Thank you in advance :)
leigh
*** more complete stack trace ***
[#|2005-01-09T15:35:57.097+0800|WARNING|sun-appserver-pe8.0.0_01|javax.enterprise.system.core.transaction|_ThreadID=17;|JTS5041: The resource manager is doing work outside a global transaction
javax.transaction.xa.XAException
     at com.pointbase.xa.xaException.getXAException(Unknown Source)
     at com.pointbase.xa.xaConnectionResource.start(Unknown Source)
     at com.sun.gjc.spi.XAResourceImpl.start(XAResourceImpl.java:162)
[#|2005-01-09T15:35:57.167+0800|SEVERE|sun-appserver-pe8.0.0_01|javax.enterprise.resource.resourceadapter|_ThreadID=17;|RAR5027:Unexpected exception in resource pooling
javax.transaction.SystemException
     at com.sun.jts.jta.TransactionImpl.enlistResource(TransactionImpl.java:185)
     at com.sun.enterprise.distributedtx.J2EETransaction.enlistResource(J2EETransaction.java:360)
     at com.sun.enterprise.distributedtx.J2EETransactionManagerImpl.enlistResource(J2EETransactionManagerImpl.java:303)
     at com.sun.enterprise.distributedtx.J2EETransactionManagerOpt.enlistResource(J2EETransactionManagerOpt.java:115)
[#|2005-01-09T15:35:57.177+0800|WARNING|sun-appserver-pe8.0.0_01|javax.enterprise.resource.resourceadapter|_ThreadID=17;|RAR5117 : Failed to obtain/create connection. Reason : javax.transaction.SystemException|#]
[#|2005-01-09T15:35:57.227+0800|WARNING|sun-appserver-pe8.0.0_01|javax.enterprise.resource.resourceadapter|_ThreadID=17;|RAR5114 : Error allocating connection : [Error in allocating a connection. Cause: javax.transaction.SystemException]|#]
[#|2005-01-09T15:35:57.237+0800|SEVERE|sun-appserver-pe8.0.0_01|javax.enterprise.system.container.ejb|_ThreadID=17;|EJB5071: Some remote or transactional roll back exception occurred
com.sun.jdo.api.persistence.support.JDODataStoreException: JDO77006: SQL exception: state = null, error code = 0.
NestedException: java.sql.SQLException: Error in allocating a connection. Cause: javax.transaction.SystemException
FailedObjectArray: [[email protected]5ac]
     at com.sun.jdo.spi.persistence.support.sqlstore.impl.TransactionImpl.getConnectionInternal(TransactionImpl.java:1444)
     at com.sun.jdo.spi.persistence.support.sqlstore.impl.TransactionImpl.getConnection(TransactionImpl.java:1339)

Hi annie,
Wherever you are handling database transactions,
you'd not be able to create a Connection if database
is closed (I think you mentioned turning off the
database) then at this condition, you should
certainly throw a System level exception and stop all
processing with some meaningful flow to indicate a
failure (like display message on UI). Even
network problems are handled by exceptions... so I
don't see a reason why you didn't wrap it in the
first place.
Anyway, try handling specific exceptions rather than
the general Exception... this will give you a better
idea of what to do in case of an exception.Yes i know this. I am practicing this in my non-j2ee server applications. But the j2ee app im making, i just pass the db url in the descriptor and the app server automatically creates the connection for my app. So where would i put exception handling?
2. how can i stop my MDB from processing the same
message?Guaranteed delivery is not supposed to stop
processing. It will continue to process the message
after certain intervals till the message is
delivered. You shouldn't deliver it at all, if you
are able to detect that the database is off
The problem here is that my MDB automatically retrieves the message from the JMS queue server. Im not the one retrieving the messages manually.
My assumed behavior of topic MDB is once the a certain MDB retrieves a message it will not retrieve the same message anymore.
thank you in advance.
leigh

Data Quality - Failed to create connection to MDR.

Hi All,
I have installed Data Quality 11.7.2 on windows 2003 server using SQL 2005 (Both SQL 2005 server and Data Quality are in the same server) , The install was successful. But when I try to Open 'Data Quality Project Architect' it throws an error
Failed to create connection to MDR.
Driver error messgage = qodbc_mssql:
Unable to connect, Database error message =] [microsoft][odbc sql server driver]
[ tcp/ip sockets] sql server does not exist or access denied
I checked the ODBC connection and tested it successfully too.
I am not able to pass through the 'Meta Data Repository Connection' as its failing in 'Setup SQL connection option'
Any help is appreciated !!!
Thanks
Ranjit Krishnan

Hi Paul,
Thanks for you reply, OBDC connection was created under System DSN, also tired the users DSN option too, but did not work.
Recreated the ODBC connection many times still no luck.
The 'Project Architect' client and the MDR (SQL 2005 Server) are on the same machine.
Thanks
Ranjit Krishnan

How dynamically create connection pool and Datasource

Hi
How I can dynamically create a connection pool and Data source in Oracle 10g Application server. In our J2EE application the user will be login with db user name, password and database name. I want to create connection pool and data source on the fly while login the user with database name. I our application we have access approximate 80 Databases. so my approach is given bellow
1) Planning to create 80 connection pools and 80 Data sources so when user logs in while selecting the db name i will call the appropriate data source and create the DB connection. Is there any limitation to create number of data sources in oracle app server?
2) Create DB connection with out using connection pool and data source. But i am not prefer this approach coz we need to handle some transaction in our application.
Kindly throw some light on managing connection pool programmatically or in application run time.
I would really appreciate if any one can provide any links or any inormation on this issue.
Thanks in advance.

Kindly let me know is there any drawbacks to create 80 Data Sources to connect 80 database in Oracle 10G App server and each data sources should have one connection pool. so i need to create 80 connection pool. Please let me know is this right approach or any work around to create Data source on fly for each request for corresponding database.

Not able to create connection or reset the password in Discoverer Plus

I keep encountering errors when
I try to create a connection or change my password. Below are the error I get.
During Change of Password:
"An invalid connection key was specified. Please correct the connection
key and try again."
During Creating Connection :
" A connection error has occurred.
- The application encountered an invalid state."
I am currently using Discoverer 10g Plus.

Hi All,
I got the Solution.Its is to do with the 'Default_role' setup in 'DBA_ROLE_PRIV' table.the user should be setup up as 'DEFAULT_ROLE' = 'YES' in the mentioned table.
Thanks,
HP

Error in creating connection object

Dear Experts
When I am creating connection object using ES55 , I get Stop message saying : " Alternate ID not supported" and when i see Help it indicates : An alternative indicator is active in Customizing of the functional location. This functionality is not supported for connection objects and device locations
what could be going wrong
Plesae suggest me the solution
Thanking you in advance
warm regards
narasimha

Hi,
Please check the following settings in SPRO:
Plant Maintenance & Customer Service - -Master Data in Plant Maintenance & Customer Service --Technical Objects --Functional Locations --Alternate Labeling of Functional Locations - - Activate Alternative Labeling --
In this setting pls inactive the setting for Alt.Label.Then go to ES55 and try.It will work.
Thanks,
Banasri Mitra

Failed to obtain/create connection from connection pool after redeploy

I have a web application (.war) that uses a jdbc connection pool. The application works fine, however after I redeploy it using the administration console I get "Failed to obtain/create connection from connection pool [ Datavision_Pool ]. Reason : null" followed by "Error allocating connection : [Error in allocating a connection. Cause: null]" from javax.enterprise.resource.resourceadapter and I am forced to restart the instance. I am running Sun Java System Application Server 9.1 (build b58g-fcs)
using a connection pool to a Microsoft SQL 2000 database using inet software's JDBC drivers. I need to be able to redeploy applications without having to restart the instance. Any help is appreciated.

I have turned on some additional diagnostics and found out some answers and a work-around, but I think that there may be a bug in the way JDBC connection pool classes are loaded. The actual error was a null pointer in the JDBC driver class in the perpareStatement method. The only line in this method is "return factory.createPreparedStatement( this , sql );" and the only possible NPE would be if the factory was null, which should be impossible because it is a static variable and it is initialized when the class is loaded. The problem occurs because we deploy the JDBC driver .jar file within our .war file, for use when a client doesn't have or want to use connection pooling. Apparently, the connection pool must have picked up some of these classes and when the .war was redeployed, the reference to the factory was lost for existing connections (not sure how). If I remove the JDBC .jar file from the .war, it works, but that wasn't an ideal solution, the other way to get it to work was to change the sun-web.xml file to have <class-loader delegate="true">. We previously had it set to false in version 8.1 because of interference with a different version of the apache Tiles classes, which has now been addressed in version 9.1.
I still think there is an issue, because the connection pool should never use the application specific classloaders. Am I wrong to believe this?

Create connection poolin in tomcat

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