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.

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[http://forums.sun.com/thread.jspa?threadID=5356073&messageID=10549446#10549446|http://forums.sun.com/thread.jspa?threadID=5356073&messageID=10549446#10549446]

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

How to configure Connection pooling in 10g AS for OCI client

Oracle Version: 10.1.3.1
Operating System: HP UX B.11.23 64 bit OS
Hello everyone,
In my connection pools setting of 10g Application server Control my application currently uses JDBC thin client. I need to move to OCI driver. My application uses JDBC 3.0
Can someone please help me out with the steps?
Thanks & Regards,
Prashant

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

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.

How to retain connection pool resource while exporting the application war

hello,
lately i have figured out how to use connection pooling. now i have another issue.
i have to export the application war file to a remote server for deployment. i cant configure the server.xml file there due to restrictions. Now is there any way that i can retain the connection pooling with all JNDI resources while exporting the war file. what all things would i have to do. i am using tomcat 4.1 and the remote server too have the same appliaction server running.
is this possible?
thanks in advance

Hi,
you might have the problem in creating WAR files.
lease check that first.
thanks,
nvseenuNo, the problem is that you shouldn't be modifying the server.xml
The proper, portable way to do it is to create a context.xml file and put it in the META-INF directory of your WAR file. This contains your Resource definition and JDBC connection parameters. Everything's portable that way.
I know this works on Tomcat 5.x.
It can also work with Tomcat 4.1.x, but the way I've done it is to put the context.xml into a file whose name matches my WAR file (e.g, foo.war and foo.xml), placing both in the /webapps directory. Tomcat 4.1.x picks it up that way.
It would be worth an experiment to see if Tomcat 4.1.x picks up the context from /META-INF, because that way your WAR file is 100% portable.
This is precisely the reason why I advise people not to edit the server.xml. You don't always have the option to do so.
%

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

Connection Pooling in Tomcat 4.1.18

Hi,
Can anyone point me to a decent resource on how to implement Oracle connection pooling in Tomcat? I'm using the UltraSearch API's for an application and cannot get it to work correctly with the DBCP implementation that I currently use.
Many thanks,
Mark.

Mark,
What kind of Oracle Connection pooling are your refering to? Are you talking about BC4J connection pooling?

How to use Connection Pool in ADF ear file creaion from jDev 10.1.3

Hi,
We are developing big application in ADF with 10 different modules. We are creating ear file with data source setting.
How to use connection pool while creating ear file from jDev. Connection pool is alreday created in Application Server 10g.
What all the setting we need do to make use of connection pool while creating ear file jDev.
Thanks

User,
If you are using ADF Business Components, you can right-click each application module, select "configurations" and edit the configuration you are using. On the initial page of the configuration dialog, you can specify to use either a JDBC URL or a Datasource - you just need to choose Datasource and then provide the name by which to access it.
John

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 use connection pooling in jsp?

I'm new to world of JSP. I'm developing web application using Oracle 8i and JSP to implement it. I'm using jakarta-tomcat server for this purpose.
I'll frequently access the database. so I want to use the connection pooling.
Can anybody explain the simple procedure to use it
thanx

Hello syyuen,
Please help me, here iam sending u my server.xml , web.xml and servlet
application. I put classes12.jar in tomcat/common/lib. and above servlet
class application under tomcat/webapps/root/web-inf/classes
and this is a simple servlet program for getting connection from the
connection pool of tomcat using tyrex..
my oracle database name is "myuser" and password is "mypass"
either u check my server.xml or tell me where under which tag should i
place <Resource...> tag in server.xml and should i need to modify any
other places..??
server.xml
<Server port="8005" shutdown="SHUTDOWN" debug="0">
          
<Service name="Tomcat-Standalone">
     
<Connector className="org.apache.catalina.connector.http.HttpConnector"
port="8080" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="10" debug="0" connectionTimeout="60000"/>
          
<Connector className="org.apache.ajp.tomcat4.Ajp13Connector"
port="8009" minProcessors="5" maxProcessors="75"
acceptCount="10" debug="0"/>
          
<Engine name="Standalone" defaultHost="localhost" debug="0">
     
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="catalina_log." suffix=".txt"
timestamp="true"/>
     
               
               
<Realm className="org.apache.catalina.realm.JDBCRealm" debug="99"
          driverName="oracle.jdbc.driver.OracleDriver"
               connectionURL="jdbc:oracle:thin:@oracle:1521:ORCL"
connectionName = "mail"
connectionPassword = "mail"
          userTable="users" userNameCol="user_name" userCredCol="user_pass"
               userRoleTable="user_roles" roleNameCol="role_name" />
                    
               
<Host name="localhost" debug="1" appBase="webapps" unpackWARs="true">
     <Valve className="org.apache.catalina.valves.AccessLogValve"
     directory="logs" prefix="localhost_access_log." suffix=".txt"
     pattern="common"/>
<Logger className="org.apache.catalina.logger.FileLogger"
directory="logs" prefix="localhost_log." suffix=".txt"
     timestamp="true"/>
               
               
               
<Context path="/manager" docBase="manager" debug="0" privileged="true"/>

     <Context path="/localhost" docBase="localhost" debug="0" reloadable="false" override="true">
          <Resource name="jdbc/myConnection" auth="SERVLET" type="javax.sql.DataSource"/>
          <ResourceParams name="jdbc/myConnection">
               <parameter><name>user</name><value>myuser</value></parameter>
               <parameter><name>password</name><value>mypass</value></parameter>
               <parameter><name>driverClassName</name><value>oracle.jdbc.driver.OracleDriver</value></parameter>
               <parameter>
                    <name>url</name>
                    <value>jdbc:oracle:thin:@oracle:1521:ORCL</value>
               </parameter>
               <parameter>
                    <name>maxActive</name>
                    <value>32</value>
               </parameter>
               <parameter>
                    <name>maxIdle</name>
                    <value>10</value>
               </parameter>
          </ResourceParams>




</Context>
</Host>
</Engine>
</Service>
     
<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="apache_log." suffix=".txt"
timestamp="true"/>
               
<Realm className="org.apache.catalina.realm.MemoryRealm" />
</Engine>
</Service>
</Server>
web.xml
<web-app>
<servlet>
<servlet-name>conServlet</servlet-name>
<servlet-class>conServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>conServlet</servlet-name>
<url-pattern> /conServlet </url-pattern>
</servlet-mapping>
<resource-ref>
<description> Resource reference to java.sql.Connection
factory defined in server.xml
</description>
<res-ref-name>jdbc/myConnection</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
servlet application
DataSource ds = (DataSource) new InitialContext().lookup("java:comp/env/jdbc/myConnection");
conn = ds.getConnection();
out.println("conn : " + conn);

How To Use Connection Pooling in Struts.

Can Somebody have the idea how to use connection pooling. i want to use jakarta commons dbcp, pool.
using these packages how can i implement the connection pooling for my web application. If Anybody have some idea plz contect me.
If Somebody have sample code plz send.
Thks in Advance,

Read the documentation...?

How to use Connection pool in Reports

Dear All,
Please help me How to create Connection pool for Reports and How to use in Reports.
Present i am using the report by passing parameter as P_JDBCPDS=username/password@databaseName. I thought this will not manage the coonection pool.
For all reports and every time i am passing userName/password, how to avoid this. Please help me.
1. How to create Connection pool for Report Server
2. How to use that Connection pool in the Reports.
Please help me.
With Regards,
Srinivas.

Until now, I have not worked unfortunately with a connection pool, but, I have found a documentation about the Creating an Internal Connection Pool.
http://download-east.oracle.com/docs/cd/B25221_04/web.1013/b13593/cpdef.htm

Help to Configure Connection Pool For Jdeveloper

Hi ,
I am using Jdeveloper 10.1.2 and Oravle AS 10.1.2.
Language Used : J2EE,Struts and EJB
I am portletizing struts application.
I need help to configure Connection pool. By default it is taking a datasource.xml not the one i had defined. Pls help me out. Affecting the performance due to so many hit to db.
regards,
Jayashree Jegan

Hi John,
Go through this thread of mine. You will get the required information to setup the connection pool.
SOAP adapter: WSDL issue
Also just check in Visual Studio Help .NET Connector for Connection Config class settings. You will see all the relevent parameters related with connection pool.
Regards.

How to configure connection pooling in tomcat?

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