Actuator valves v/s global valves

I am working on two phase multiple flow rig.The rig has several mechanical globes valves mounted on two inch diameter pipe.these valves are being used to control the level of tank.
I want to control these valves via Labview so i need to replace them by their electronic counter parts. need you suggestion to replace thise globe valves so that they can be controlled by
Labview and DAQ card.the pressure rating for these valves are PN30 bar.Any comments.Which valves should i use to replace them.I came to know that actuator may be one of the options.
but i do nt know how to use them with labview.Which DAQ card shoud I used to interface with these actuator.I am using PC MIO E series card.is it enough to be used with actuator.any help
Reagrds
Dost

Hi Dost
I think you need to provide more information: with a 2inch diameter
pipe what flow rates are you expecting, valve characteristics,
temperature parameters,also pressure, does viscosity have a bearing ?
Not familiar with globe valves but I daresay you could replace them with 'motor driven valves ie stepper motor etc.
There are various methods of interfacing,which you need to
invesigate.An example is to use 5V TTL level to 'switch' a relay
to enable a motor
to drive valve open or shut.
The more details provided the more solutions possible.
xseadog

Similar Messages

How to actuate 20 solenoid valves using labview

I want to perform an action of detaching materials from a fixture by actuating 20 pneumatic pistons controlled by 20 solenoid valves.
If the valve is actuated the piston moves and stays in the location for 1 sec and then return back. Each of these cylinders should be able to be controlled separately.
Kindly provide me with the necessary equipments i should buy.
How can i control 20 solenoids using a DAQ card. is it possible?
Also i need to accept around 20 Digital Signals too.
Could you specify any card that will meet the spec.?
Thank you in advance.
Regards
grugh
Regards
Grugh Mike
Success is Everything !!

With the equipment that you have, a good choice would be Opto-22 series for the G4 series of the Opto-22. Select the screw terminal base and an ODC module appropriate to your power/voltage requirements. this will use the TTL digital output to control a power solid state relay. If you look to the other signal conditioning products from NI, they will allow you to do the same thing as well.
Stu McFarlane
Viewpoint Systems, Inc.

High ping on Valve servers

Hi,
Over the past month or so, ive noticed im getting a ping of over 200 on Valve servers on Team Fortess 2. For the past 2 weeks, it seemed to had settled down a little to about 70 ping, which i can play on but now its back to 200+. After starting a steam forum thread about this, i soo realised that everyone that has the problem is on BT infinity. One guy added me and we discussed what we was on and what problems we were getting and they were identical. BT Homehub 4, high ping only on Valve servers
Ive reset my connection in a million different ways suggested by different people and none of that did anything. From a few searches, some people fixed the issue by getting mods to change their latency type from Interleaved to Fast, but i dont know what im on so i cant tell if thats the issue.
I dont know what im meant to post but this is all the specs under "Helpdesk":
1. Product name:
BT Home Hub
2. Serial number:
+068341+NQ31327903
3. Firmware version:
Software version 4.7.5.1.83.8.130.1.17 (Type A) Last updated 10/05/14
4. Board version:
BT Hub 4A
5. WAN:
PPP Connected
6. Data sent/received:
136.1 MB / 415.5 MB
7. Broadband username:
[email protected]
8. BT FON:
Yes
9. 2.4 GHz Wireless network/SSID:
BTHub4-XS3P
10. 2.4 GHz Wireless connections:
Enabled (802.11 b/g/n (Recommended)) 20 MHz, WPS enabled
11. 2.4 GHz Wireless security:
WPA and WPA2
12. 2.4 GHz Wireless channel:
Automatic / 11
13. 5 GHz Wireless network/SSID:
BTHub4-XS3P
14. 5 GHz Wireless connections:
Enabled (802.11 n 40 MHz (Recommended)) 20/40 MHz, WPS enabled
15. 5 GHz Wireless security:
WPA2
16. 5 GHz Wireless channel:
Automatic / 40
17. Firewall:
Default
18. MAC Address:
2c:39:96:6b:7d:56
19. Software variant:
20. Boot loader:
BT Home Hub 4 (Type A) | Software version 4.7.5.1.83.8.130.1.17 | Last updated 10/05/14
Any help?

Just got off the phone with someone from BT trying to convince me its an issue either my end or Valve's end (Even though it happens on non valve games also). Valve have told me its my ISP, which i am 100% certain it is, and she is just telling me to reset my router just once more.
Hope the forum can save me here

How to keep that valve open for certain period of time and shut off automatically

Hi everyone,
The objective of the VI is to measure pH and then open acid or base valve based on pH valve. Below is my UNFINISHED VI
My question is: if, for example, the pH is 10, then, the program will open acidic valve for 5 seconds and then shut off automatically. After that, wait for 5 second. this process will go on and on as I use while loop, but I just dont know how to control the valve on for 5sec and off and then wait for 5sec.
Anyone can help me out? Thank you very much
In the picture, please enter those values before running
P.S The VI is based on previously posted vi by someone who made it 1 yrs ago.
Attachments:
project_trial_1_26.vi ‏27 KB
Capture.JPG ‏79 KB

1. The reason the valves close immediately is that the Elapsed Time VI does not cause any wait, it only measures the time. So the valves closed within a small fraction of a second of the time they opened.
2. I modified your VI to wait until the Elapsed Time has ended. See the "wait" state. I probably modified some of your other functionality in the process, but this shows one way you could do the timing.
3. You do not need any Value property nodes. They should never be used if the value can be wired directly.
4. You do not need any sequence structures. Dataflow will determine the order of things occurring.
5. If you use an enum for the state machine (and it is a good way to name and select states), you should make it a type def. Then when you need to change it as I did to add several states, you only need to change the Type Def in one place and the changes propagate through to every place you used the control or constants derived from it.
6. I added a Halt state which will close both valves before stopping the program. When you are controlling a real world process, it is important to consider the start up and shutdown requirements. For example the digital outputs of the USB-6008 default to inputs when the device is first powered up. And, the inputs are pulled high by a 4700 ohm resistor (at least I think I recall that value). Will this open your valves before the program starts running and sets the I/O lines to outputs and forces them low?
The USB-6008 has rather limited drive on the digital lines. You will probably need a buffer between it and the valve coils.
PID and PWM are more complicated than I want to get into here. First, are your valves proportional or on/off? Second, (assuming that they are on/off) how fast can you open and close them without destroying them in the first week? What is their expected lifetime in terms of the number of operations? How fast do you need to be able to change them to keep your pH where you want it? Are these values compatible?
Lynn
Attachments:
pH State.ctl ‏12 KB
project_trial_1_28.2.vi ‏66 KB

Linear mixing gradient with solenoid valves

Hello Everyone,
I have finally come to a problem in labview that is over my head. Until now I have been making small programs using MC DAQ-USB 1208 or USB 1608 to run my programs and have gotten pretty good at reading block diagrams but still struggle with making them.
I am looking to control a series of solenoid valves of a proportional valve to dispense two liquids to create a linear gradient. For those of you not familiar with how a proportional valve works, if you programmed it to deliver 75% of A-solvent and 25% of B-solvent, the valves would open A-B-A-B-A-B… in a 75:25 ratio of opening times. To deliver a gradient like i am wanting, the ratio of the opening times of the various proportioning valves will change during the gradient to change the overall concentration.
I have done all the math which i have attached below and have included a setup of my system as well. There will be two pumps, each with a different flow rate. One pump, P2 will be used to pull the gradient from the proportional valve into a loop of known volume. once the loop is filled, a 6 port 2-way valve will be switched and using the second pump, P2, the liquid will be pushed though the outlet.
Below I think i have included everything that will be on the project window. There will be a series of steps with each step having time and %B as inputs (we can ignore pump flow rate because it will be a constant). Those inputs translate to the picture below to generate the slope. There are also a series of constants listed to the right that will not change throughout gradient formation. The equations of the program are listed at the bottom and if someone could assist me in getting this program off the ground that would be amazing.
Any questions or clarifications I would be glad to make and any assistance would greatly be appreciated. And I am runing LV2013 64-bit.
Attachments:
2015-05-22 12-11-16.pdf ‏529 KB
Screen Shot 2015-05-09 at 1.35.32 PM.png ‏23 KB

Attached is the VI for what I have come up with for my project. I have a few questions. I have a circuit that I have attached that has a relay controled by a DO on my DAQ. I am using MC USB-1208LS. I have the VI set up where i am tracking the percent A and B along the gradient time but I am wondering how to take a snapshot of this at the duration of time/cycle (~4 seconds) and tell that to send a signal to the DO. The relay I am using is axicom fp2 d3023 and will have solenoid A open when given signal and closed when it isnt and vise versa for B. I have attached the circuit for the solenoids (already tested) and A will be in pin 2 on the relay and B in pin 4 and the 5 V signal from the DAQ is getting amplified to 12V and in pin 3. If someone could help me with how to send a signal (it would be a snapshot of the %A and that would be multiplied by the time per cycle to tell it how long to give the signal for in milliseconds. That would get repeated for the entire duration of the gradient (or total number of cycles).
Attachments:
Screen Shot 2015-06-20 at 7.55.29 AM.png ‏23 KB
Time Per Cycle v2.vi ‏43 KB

PID servo valve wiring and control

I'm trying to control a pneumatic servo valve with a PID vi but I'm confused about the wiring of the servo valve. The servo valve has two wires, valve command and valve feedback. What do I do with the valve feedback? I'm wiring the analog out from my vi with the PID controller through the A/D board to the servo valve command wire. It seems to me that there should be two closed feedback loops. One using the LVDT signal as feedback and the other using the valve feedback signal as the feedback. Any insights or example vi's would be greatly appreciated.
Thank you,
Todd Baldini
[email protected]

Please make sure that your servo valve is meant to take control signals. Often times, an amplifier is used between the control valve and the main controller. The way it stands now, you would need 2 control loops. One to control valve position, the other to generate the control signal(%valve open).

Controlling a proportional control valve

Hi,
I wish to control a the flow of air through a pipe using a proportional control valve. I also what to feed back the flow rate with an anemometer. I'm using labview 8.2 and i'm not sure what sort of DAQ card i'm using. I'm a novice with LABview to say the least so any advice in the right direction would be greatly appreciated. Thanks in advance.
Regards
Josh

I don't think a motion control system is necessary. However, you'll need to provide more information about your system in order to get a helpful answer. Do you already have a data acquisition card, and if so, can you find out what it is? If it's a National Instruments card, and installed in your computer, try opening Measurement and Automation Explorer (MAX) and see what device you have. Do you already have the other components of your system: the proportional valve and the anemometer? If so, what sort of signals do they need and provide? How much accuracy in your control do you need? If you don't already have your valve and meter, have you considered buying a flow controller that already includes both a valve and a meter in one package (I've used Mass Flow Controllers from Brooks Instrument, other companies offer similar valves)? While such valves aren't cheap, you can simply write a voltage to it corresponding to the desired flow, and read back the actual flow rate.
Message Edited by nathand on 02-12-2009 08:49 AM

Create a new web application, how shall I update the file server.xml

Hi,
I will create a new web application, i.e named newApp. Then I create a file structure as follows:
- <server-root>/newApp
- <server-root>/newApp/WEB-INF
- <server-root>/newApp/WEB-INF/classes
Then I must tell the server that I have created a new web application. Then I must update my file server.xml, How shall I do this and where in the file shall I type in the new information?
I use windows XP Pro, and Tomcat 4.1.27.
My server.xml file looks like below:



<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"/>

<GlobalNamingResources>

<Environment name="simpleValue" type="java.lang.Integer" value="30"/>

<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved">
</Resource>
<ResourceParams name="UserDatabase">
<parameter>
<name>factory</name>
<value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
</parameter>
<parameter>
<name>pathname</name>
<value>conf/tomcat-users.xml</value>
</parameter>
</ResourceParams>
</GlobalNamingResources>


<Service name="Tomcat-Standalone">


<Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
port="8080" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="100" debug="0" connectionTimeout="20000"
useURIValidationHack="false" disableUploadTimeout="true" />




<Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
port="8009" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="10" debug="0" connectionTimeout="0"
useURIValidationHack="false"
protocolHandlerClassName="org.apache.jk.server.JkCoyoteHandler"/>












<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.UserDatabaseRealm"
debug="0" resourceName="UserDatabase"/>







<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"/>

<DefaultContext reloadable="true"/>

<Context path="" docBase="ROOT" debug="0"/>

<Context path="/examples" docBase="examples" debug="0"
reloadable="true" crossContext="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_examples_log." suffix=".txt"
timestamp="true"/>
<Ejb name="ejb/EmplRecord" type="Entity"
home="com.wombat.empl.EmployeeRecordHome"
remote="com.wombat.empl.EmployeeRecord"/>




<Environment name="maxExemptions" type="java.lang.Integer"
value="15"/>
<Parameter name="context.param.name" value="context.param.value"
override="false"/>
<Resource name="jdbc/EmployeeAppDb" auth="SERVLET"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/EmployeeAppDb">
<parameter><name>username</name><value>sa</value></parameter>
<parameter><name>password</name><value></value></parameter>
<parameter><name>driverClassName</name>
<value>org.hsql.jdbcDriver</value></parameter>
<parameter><name>url</name>
<value>jdbc:HypersonicSQL:database</value></parameter>
</ResourceParams>
<Resource name="mail/Session" auth="Container"
type="javax.mail.Session"/>
<ResourceParams name="mail/Session">
<parameter>
<name>mail.smtp.host</name>
<value>localhost</value>
</parameter>
</ResourceParams>
<ResourceLink name="linkToGlobalResource"
global="simpleValue"
type="java.lang.Integer"/>
</Context>
</Host>
</Engine>
</Service>
</Server>

To use servlets u have indeed to update your web.xml...Well I'm not sure this is relevant to your case anyway.
You have to add a <servlet> element to this file.
Something like this:
<servlet>
<servlet-name>blabla</servlet-name>
<servlet-class>blablapackage.Blablaclass</servlet-class>
<init-param>...</init-param>
</servlet>
Now this may not solve your problem. Make sure you refer to your servlets using their full qualified names.btw, just to be sure, what is your definition of "servlet"? (i mean: any java class or only javax.servlet.Servlet)

Exception report when using tomcat 5 with JDBC

i followed this guide to setup the JDBC with my TOMCAT 5
http://jakarta.apache.org/tomcat/tomcat-5.0-doc/jndi-datasource-examples-howto.html#Database%20Connection%20Pool%20(DBCP)%20Configurations
but i seem to get this error
exception
javax.servlet.ServletException: Unable to get connection, DataSource invalid: "org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'"
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:846)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:779)
     org.apache.jsp.SID.test_jsp._jspService(test_jsp.java:81)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
javax.servlet.jsp.JspException: Unable to get connection, DataSource invalid: "org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'"
     org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.getConnection(QueryTagSupport.java:276)
     org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.doStartTag(QueryTagSupport.java:159)
     org.apache.jsp.SID.test_jsp._jspx_meth_sql_query_0(test_jsp.java:100)
     org.apache.jsp.SID.test_jsp._jspService(test_jsp.java:58)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
i can compile *.java and run them when they need the jdbc drivers to interact with mysql 5 database.
This is my server.xml



<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"/>

<GlobalNamingResources>

<Environment name="simpleValue" type="java.lang.Integer" value="30"/>

<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved">
</Resource>
<ResourceParams name="UserDatabase">
<parameter>
<name>factory</name>
<value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
</parameter>
<parameter>
<name>pathname</name>
<value>conf/tomcat-users.xml</value>
</parameter>
</ResourceParams>
</GlobalNamingResources>


<Service name="Catalina">


<Connector port="8080"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
debug="0" connectionTimeout="20000"
disableUploadTimeout="true" />

     



<Connector port="8009"
enableLookups="false" redirectPort="8443" debug="0"
protocol="AJP/1.3" />






<Engine name="Catalina" defaultHost="localhost" debug="0">



<Logger className="org.apache.catalina.logger.FileLogger"
prefix="catalina_log." suffix=".txt"
timestamp="true"/>


<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
debug="0" resourceName="UserDatabase"/>







<Host name="localhost" debug="0" appBase="webapps"
unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">








<Logger className="org.apache.catalina.logger.FileLogger"
directory="logs" prefix="localhost_log." suffix=".txt"
timestamp="true"/>
          <Context path="/testdb" docBase="APACHE_DIR/htdocs/testdb"
debug="5" reloadable="true" crossContext="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_DBTest_log." suffix=".txt"
timestamp="true"/>
<Resource name="jdbc/TestDB"
auth="Container"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/TestDB">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>

<parameter>
<name>maxActive</name>
<value>10</value>
</parameter>

<parameter>
<name>maxIdle</name>
<value>5</value>
</parameter>

<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter>

<parameter>
<name>username</name>
<value>test</value>
</parameter>
<parameter>
<name>password</name>
<value>testpwd</value>
</parameter>

<parameter>
<name>driverClassName</name>
<value>com.mysql.jdbc.Driver</value>
</parameter>

<parameter>
<name>url</name>
<value>jdbc:mysql://localhost/testdb?autoReconnect=true</value>
</parameter>
</ResourceParams>
     </Context>
</Host>
</Engine>
</Service>
</Server>

You haven't added a resource reference for your web application that gives the application a local name for the global resource "UserDatabase".

Has anyone run the connection pooling for mysql & tomcat successfully?

I'm trying to set up connection pooling. I'm following the how-to page at
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jndi-datasource-examples-howto.html
But when i test the DBTest/test.jsp file, tomcat displays an error =
could not load jdbc driver class 'null'(msdos)
i have placed all the required .jar files in the tomcat lib.
below is the cofiguration i did to the server.xml file



<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"/>

<GlobalNamingResources>

<Environment name="simpleValue" type="java.lang.Integer" value="30"/>

<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved">
</Resource>
<ResourceParams name="UserDatabase">
<parameter>
<name>factory</name>
<value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
</parameter>
<parameter>
<name>pathname</name>
<value>conf/tomcat-users.xml</value>
</parameter>
</ResourceParams>
</GlobalNamingResources>


<Service name="Tomcat-Standalone">


<Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
port="8080" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="100" debug="0" connectionTimeout="20000"
useURIValidationHack="false" disableUploadTimeout="true" />




<Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
port="8009" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="10" debug="0" connectionTimeout="20000"
useURIValidationHack="false"
protocolHandlerClassName="org.apache.jk.server.JkCoyoteHandler"/>











<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.UserDatabaseRealm"
debug="0" resourceName="UserDatabase"/>







<Host name="localhost" debug="0" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<Context path="/my-jsp" docBase="c:\JSP-Files" debug="0"
privileged="true" reloadable="true" />
     <Context path="" docBase="c:\Inetpub\wwwroot" debug="0" privileged="true" />
<Context path="/sharon" docBase="C:\Tomcat 4.1\webapps\sharon" debug="0" privileged="true" />





<Logger className="org.apache.catalina.logger.FileLogger"
directory="logs" prefix="localhost_log." suffix=".txt"
     timestamp="true"/>




<Context path="/examples" docBase="examples" debug="0"
reloadable="true" crossContext="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_DBTest_log." suffix=".txt"
timestamp="true"/>
<Ejb name="ejb/EmplRecord" type="Entity"
home="com.wombat.empl.EmployeeRecordHome"
remote="com.wombat.empl.EmployeeRecord"/>



          
<Environment name="maxExemptions" type="java.lang.Integer"
value="15"/>
<Parameter name="context.param.name" value="context.param.value"
override="false"/>
<Resource name="jdbc/EmployeeAppDb" auth="SERVLET"
type="javax.sql.DataSource"/>
<Resource name="jdbc/TestDB"
     auth="Container"
     type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/TestDB">
<parameter>
     <name>factory</name>
     <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
     </parameter>
     
     <parameter>
     <name>maxActive</name>
     <value>100</value>
     </parameter>
     
     <parameter>
     <name>maxIdle</name>
     <value>30</value>
     </parameter>
     
     <parameter>
     <name>maxWait</name>
     <value>10000</value>
     </parameter>

<parameter>
<name>user</name>
<value>javauser</value>
</parameter>
<parameter>
<name>password</name>
<value>javadude</value>
</parameter>

<parameter>
<name>driverClassName</name>
<value>org.gjt.mm.mysql.Driver</value>
</parameter>

     <parameter>
     <name>url</name>
     <value>jdbc:mysql://localhost:3306/javatest?autoReconnect=true</value>
</parameter>
</ResourceParams>
<Resource name="mail/Session" auth="Container"
type="javax.mail.Session"/>
<ResourceParams name="mail/Session">
<parameter>
<name>mail.smtp.host</name>
<value>localhost</value>
</parameter>
</ResourceParams>
<ResourceLink name="linkToGlobalResource"
global="simpleValue"
type="java.lang.Integer"/>
</Context>
</Host>
</Engine>
</Service>



</Server>
Pleas4 help!!!

you have your driver jar in Tomcat\common\lib?
if so, check your classpath, it could be that.

DB & Tomacat on different server, How to create DBCP?

If DB svr and Tomcat on same server, DBCP works ok.
Now, I am setup my programing enviornment based on Windows XP, Eclipse, lomboz, Tomcat, MySQL connector/J, but MySQL database is on another Linux server.
I tried, but I still get error:
===================================================================================
Cannot create JDBC driver of class '' for connect URL 'null'
===============================================================================
server.xml
===================================================================================



<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"/>

<GlobalNamingResources>

<Environment name="simpleValue" type="java.lang.Integer" value="30"/>

<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved">
</Resource>
<ResourceParams name="UserDatabase">
<parameter>
<name>factory</name>
<value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
</parameter>
<parameter>
<name>pathname</name>
<value>conf/tomcat-users.xml</value>
</parameter>
</ResourceParams>
</GlobalNamingResources>


<Service name="Catalina">


<Connector port="8080"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
debug="0" connectionTimeout="20000"
disableUploadTimeout="true" />

     



<Connector port="8009"
enableLookups="false" redirectPort="8443" debug="0"
protocol="AJP/1.3" />






<Engine name="Catalina" defaultHost="localhost" debug="0">



<Logger className="org.apache.catalina.logger.FileLogger"
prefix="catalina_log." suffix=".txt"
timestamp="true"/>


<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
debug="0" resourceName="UserDatabase"/>







<Host name="localhost" debug="0" appBase="webapps"
unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">








<Logger className="org.apache.catalina.logger.FileLogger"
directory="logs" prefix="localhost_log." suffix=".txt"
timestamp="true"/>
<Context path="/DBTest" docBase="DBTest"
debug="5" reloadable="true" crossContext="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_DBTest_log." suffix=".txt"
timestamp="true"/>
<Resource name="jdbc/DBTest"
auth="Container"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/DBTest">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>

<parameter>
<name>maxActive</name>
<value>100</value>
</parameter>

<parameter>
<name>maxIdle</name>
<value>30</value>
</parameter>

<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter>

<parameter>
<name>username</name>
<value>javauser</value>
</parameter>
<parameter>
<name>password</name>
<value>javadude</value>
</parameter>

<parameter>
<name>driverClassName</name>
<value>com.mysql.jdbc.Driver</value>
</parameter>

<parameter>
<name>url</name>
<value>jdbc:mysql://192.168.1.4:3306/javatest?autoReconnect=true</value>
</parameter>
<parameter>
<name>removeAbandoned</name>
<value>true</value>
</parameter>
<parameter>
<name>removeAbandonedTimeout</name>
<value>300</value>
</parameter>
</ResourceParams>
</Context>
</Host>
</Engine>
</Service>
</Server>
======================================================================
Please help.
Thx in advance
Wolf

Yikes! It's a lot of stuff to wade through.
First of all, it's entirely possible, even desirable to have Tomcat running on one machine and the database on another. JDBC will make the network connection for you. You said you're using MySQL, which has a type IV JDBC driver. That and all of its attendent JARs should be put in your WEB-INF/lib, of course. So should all the JARs required by org.apache.commons.dbcp.BasicDataSourceFactory. That way they're portable with your WAR file.
You've posted the entire server.xml. I don't edit that anymore. Since Tomcat 4.1.x, you can put the context XML in a file named app-name.xml and deploy it in TOMCAT_HOME/webapps along with a WAR file of the same name (app-name.war). Tomcat will pick up both.
This works. I've done it with Tomcat 4.1.29 and Oracle 9i. Tomcat is running on a Windoze 2000 server, and Oracle is running on Unix.
I think you just need to go through the JNDI data source docs carefully:
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jndi-datasource-examples-howto.html
MOD

Hi how to add new folders under root for jsp in tomcat4.1.18

hi,
previsously i used tomcat3.3 and tomcat4.1.12 run sucessfully.
now i downloed jakartha_tomcat4.1.18,
i am running sample succesfuly direcly under root.
now i want my some jsp appilcationes to run under xyz,pqr folders
here my jsp files are abc.jsp,fgh.jsp while running file url like this
http://localhost:8080/xyz/abc.jsp
http://localhost:8080/pqr/fgh.jsp
while running url server not locate the files.
where i add these xyz and pqr folders in server.xml.
here my server.xml like this any one can modify this



<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"/>

<GlobalNamingResources>

<Environment name="simpleValue" type="java.lang.Integer" value="30"/>

<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved">
</Resource>
<ResourceParams name="UserDatabase">
<parameter>
<name>factory</name>
<value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
</parameter>
<parameter>
<name>pathname</name>
<value>conf/tomcat-users.xml</value>
</parameter>
</ResourceParams>
</GlobalNamingResources>


<Service name="Tomcat-Standalone">


<Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
port="8080" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="100" debug="0" connectionTimeout="20000"
useURIValidationHack="false" disableUploadTimeout="true" />




<Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
port="8009" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="10" debug="0" connectionTimeout="0"
useURIValidationHack="false"
protocolHandlerClassName="org.apache.jk.server.JkCoyoteHandler"/>












<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.UserDatabaseRealm"
debug="0" resourceName="UserDatabase"/>







<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="" docBase="ROOT" debug="0"/>

<Context path="/examples" docBase="examples" debug="0"
reloadable="true" crossContext="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_examples_log." suffix=".txt"
     timestamp="true"/>
<Ejb name="ejb/EmplRecord" type="Entity"
home="com.wombat.empl.EmployeeRecordHome"
remote="com.wombat.empl.EmployeeRecord"/>



          
<Environment name="maxExemptions" type="java.lang.Integer"
value="15"/>
<Parameter name="context.param.name" value="context.param.value"
override="false"/>
<Resource name="jdbc/EmployeeAppDb" auth="SERVLET"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/EmployeeAppDb">
<parameter><name>username</name><value>sa</value></parameter>
<parameter><name>password</name><value></value></parameter>
<parameter><name>driverClassName</name>
<value>org.hsql.jdbcDriver</value></parameter>
<parameter><name>url</name>
<value>jdbc:HypersonicSQL:database</value></parameter>
</ResourceParams>
<Resource name="mail/Session" auth="Container"
type="javax.mail.Session"/>
<ResourceParams name="mail/Session">
<parameter>
<name>mail.smtp.host</name>
<value>localhost</value>
</parameter>
</ResourceParams>
<ResourceLink name="linkToGlobalResource"
global="simpleValue"
type="java.lang.Integer"/>
</Context>
</Host>
</Engine>
</Service>



</Server>
==========
any one may modify above one
thanks
pullareddyj

As the server.xml is big enough, I took the minimum portion of it. Hope u can proceed with it.

<Context path="" docBase="ROOT" debug="0"/>

<Context path="/xyz" docBase="pathTo_xyz" debug="0" crossContext="true"/>
<Context path="/pqr" docBase="pathTo_pqr" debug="0" crossContext="true"/>

<Context path="/examples" docBase="examples" debug="0"
reloadable="true" crossContext="true">
You should also provide a WEB-INF folder under pqr or xyz folder.
You should also provide a web.xml file under each WEB-INF folder.
The minimal web.xml is
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/j2ee/dtd/web-app_2_3.dtd">
<web-app>
</web-app>
That's it. Try it out. Hope it is OK.
Hafizur Rahman
SCJP

MySql database Connection failure

Hi,
I have following code. I am using MySql database. and Tomcat server and MySql jdbc driver. I am able to get the Datasource but when I call getConnection on ds, I get Connection object as null. Any help here?
               ctx = new InitialContext();
               if( ctx == null ) throw new Exception("ERROR - No Context");
               // ESTABLISH THE DataSource //
                              ds = (DataSource)ctx.lookup("java:comp/env/jdbc/xmediaDB");
               if( ds == null ) throw new Exception("ERROR - DataSource is null");
               // ESTABLISH THE Connection //
               con = ds.getConnection();
               if( con == null ) throw new Exception("ERROR - Failed to get connection");

Yes database is running...
Here are my server.xml and web.xml anything wrong here?
Hi sherbir,
Pl let me know if anything wrong.
Here is my server.xml :



<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"/>

<GlobalNamingResources>
    
    <Environment name="simpleValue" type="java.lang.Integer" value="30"/>
    
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
       description="User database that can be updated and saved">
    </Resource>
    <ResourceParams name="UserDatabase">
      <parameter>
        <name>factory</name>
        <value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
      </parameter>
      <parameter>
        <name>pathname</name>
        <value>conf/tomcat-users.xml</value>
      </parameter>
    </ResourceParams>
</GlobalNamingResources>


<Service name="Tomcat-Standalone">
    
    
    <Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
               port="8080"
               minProcessors="5" maxProcessors="75"
               enableLookups="true" redirectPort="8443"
               acceptCount="100" debug="0" connectionTimeout="20000"
               useURIValidationHack="false" disableUploadTimeout="true" />
    
    
    
    
    <Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
               port="8009" minProcessors="5" maxProcessors="75"
               enableLookups="true" redirectPort="8443"
               acceptCount="10" debug="0" connectionTimeout="20000"
               useURIValidationHack="false"
               protocolHandlerClassName="org.apache.jk.server.JkCoyoteHandler"/>
    
    
    
    
    
    
    
    
    
    
    
    <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.UserDatabaseRealm"
                 debug="0" resourceName="UserDatabase"/>
      
      
      
      
      
      
      
      <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="/examples" docBase="examples" debug="0"
                 reloadable="true" crossContext="true">
          <Logger className="org.apache.catalina.logger.FileLogger"
                     prefix="localhost_examples_log." suffix=".txt"
               timestamp="true"/>
          <Ejb   name="ejb/EmplRecord" type="Entity"
                 home="com.wombat.empl.EmployeeRecordHome"
               remote="com.wombat.empl.EmployeeRecord"/>
          

          
            
          <Environment name="maxExemptions" type="java.lang.Integer"
                      value="15"/>
          <Parameter name="context.param.name" value="context.param.value"
                     override="false"/>
          <Resource name="jdbc/EmployeeAppDb" auth="SERVLET"
                    type="javax.sql.DataSource"/>
          <ResourceParams name="jdbc/EmployeeAppDb">
            <parameter><name>user</name><value>sa</value></parameter>
            <parameter><name>password</name><value></value></parameter>
            <parameter><name>driverClassName</name>
              <value>org.hsql.jdbcDriver</value></parameter>
            <parameter><name>driverName</name>
              <value>jdbc:HypersonicSQL:database</value></parameter>
          </ResourceParams>
          <Resource name="mail/Session" auth="Container"
                    type="javax.mail.Session"/>
          <ResourceParams name="mail/Session">
            <parameter>
              <name>mail.smtp.host</name>
              <value>localhost</value>
            </parameter>
          </ResourceParams>
          <ResourceLink name="linkToGlobalResource"
                    global="simpleValue"
                    type="java.lang.Integer"/>
        </Context>
        
        <Context
     path="/review"
     debug="0"
     reloadable="true"
     docBase="C:\download\eclipse\eclipse\workspace\review"
     workDir="C:\download\eclipse\eclipse\workspace\review\work\org\apache\jsp" >
            <Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_review_log." suffix=".txt" timestamp="true"/>
            
            <Resource name="jdbc/xmediaDB"
                auth="Container"
                type="javax.sql.DataSource">
            </Resource>
            <ResourceParams name ="jdbc/xmediaDB">
                <parameter>
                    <name>factory</name>
                    <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
                </parameter>
                <parameter>
                    <name>maxActive</name>
                    <value>50</value>
                </parameter>
                <parameter>
                    <name>maxIdle</name>
                    <value>30</value>
                </parameter>
                <parameter>
                    <name>maxWait</name>
                    <value>80</value>
                </parameter>
                <parameter>
                    <name>username</name>
                    <value>root</value>
                </parameter>
                <parameter>
                    <name>password</name>
                    <value>admin</value>
                </parameter>
                <parameter>
                    <name>driverClassName</name>
                    <value>com.mysql.jdbc.Driver</value>
                </parameter>
                <parameter>
                    <name>url</name>
                    <value>jdbc:mysql://153.32.143.96:3306/xmedia_dev?autoReconnect=true</value>
                </parameter>
            </ResourceParams>
        </Context>
      </Host>
    </Engine>
</Service>



</Server>and Here is my web.xml :
<?xml version="1.0" encoding="ISO-8859-1"?>
<!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>



    <display-name>Cross-Media Review Server</display-name>


<description>
Cross-Media Review Server
</description>




    <context-param>
        <param-name>javax.servlet.jsp.jstl.fmt.locale</param-name>
        <param-value>en-US</param-value>
    </context-param>
    <context-param>
        <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
        <param-value>messages</param-value>
    </context-param>






    <filter>
        <filter-name>ReviewAuthenFilter</filter-name>
        <filter-class>com.adobe.xmtech.review.BeamAuthenticationFilter</filter-class>
    </filter>


    <filter-mapping>
        <filter-name>ReviewAuthenFilter</filter-name>
        <servlet-name>ReviewHandler</servlet-name>
    </filter-mapping>


    <servlet>
        <servlet-name>ReviewHandler</servlet-name>
        <servlet-class>com.adobe.review.ReviewHandler</servlet-class>
        <init-param>
            <param-name>AcrobatFeedback</param-name>
            <param-value>none</param-value> 
        </init-param>
        <init-param>
            <param-name>FDFLogging</param-name>
            <param-value>file</param-value> 
        </init-param>
    </servlet>
    <servlet>
        <servlet-name>Image</servlet-name>
        <servlet-class>com.adobe.review.util.ImageServer</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>Precompile</servlet-name>
        <servlet-class>com.adobe.review.util.Precompile</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>Login</servlet-name>
        <servlet-class>com.adobe.xmtech.review.Login</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>Logout</servlet-name>
        <servlet-class>com.adobe.xmtech.review.Logout</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>FetchPDF</servlet-name>
        <servlet-class>com.adobe.review.beam.misc.FetchPDF</servlet-class>
    </servlet>


    <servlet-mapping>
        <servlet-name>Image</servlet-name>
        <url-pattern>/acrobat/img/*</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Precompile</servlet-name>
        <url-pattern>/acrobat/jsp/*</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Login</servlet-name>
        <url-pattern>/acrobat/misc/Login</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Logout</servlet-name>
        <url-pattern>/acrobat/misc/Logout</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>FetchPDF</servlet-name>
        <url-pattern>/acrobat/misc/FetchPDF/*</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>ReviewHandler</servlet-name>
        <url-pattern>/acrobat/*</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>ReviewHandler</servlet-name>
        <url-pattern>*.fdf</url-pattern>
    </servlet-mapping>


    <session-config>
        <session-timeout>86400</session-timeout>
    </session-config>


    <mime-mapping>
        <extension>pdf</extension>
        <mime-type>application/pdf</mime-type>
    </mime-mapping>
    <mime-mapping>
        <extension>fdf</extension>
        <mime-type>application/fdf</mime-type>
    </mime-mapping>


    <welcome-file-list>
        <welcome-file>login.jsp</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
    </welcome-file-list>






    
    <resource-ref>
        <description>DB Connection</description>
        
        
        <res-ref-name>java:comp/env/jdbc/xmediaDB</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
    </resource-ref>











</web-app>

8080 port has been used,why?

windows and solaris both has this problem.thanks a lot.
D:\j2sdk1.4.0\bin\javaw.exe -Djava.endorsed.dirs=D:\Program Files\Apache Tomcat 4.0\bin;D:\Program Files\Apache Tomcat 4.0\common\lib -Dcatalina.base=C:\Documents and Settings\Administrator\.IntelliJIdea\system\tomcat_GetDemo_8c6d0204 -Dcatalina.home=D:\Program Files\Apache Tomcat 4.0 -Djava.io.tmpdir=D:\Program Files\Apache Tomcat 4.0\temp -classpath D:\j2sdk1.4.0\lib\tools.jar;D:\Program Files\Apache Tomcat 4.0\bin\bootstrap.jar;D:\Program Files\Apache Tomcat 4.0\common\lib\jndi.jar;D:\Program Files\Apache Tomcat 4.0\common\lib\activation.jar;D:\Program Files\Apache Tomcat 4.0\common\lib\jdbc2_0-stdext.jar;D:\Program Files\Apache Tomcat 4.0\common\lib\jta-spec1_0_1.jar;D:\Program Files\Apache Tomcat 4.0\common\lib\tyrex-0.9.7.0.jar;D:\Program Files\Apache Tomcat 4.0\common\lib\naming-common.jar;D:\Program Files\Apache Tomcat 4.0\common\lib\naming-resources.jar;D:\Program Files\Apache Tomcat 4.0\common\lib\mail.jar;D:\Program Files\Apache Tomcat 4.0\common\lib\xerces.jar;D:\Program Files\Apache Tomcat 4.0\common\lib\servlet.jar;D:\Program Files\Apache Tomcat 4.0\common\lib\tools.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\servlets-default.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\tomcat-http11.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\servlets-common.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\catalina.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\servlets-webdav.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\servlets-invoker.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\tomcat-coyote.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\tomcat-util.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\warp.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\jakarta-regexp-1.2.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\commons-logging.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\tomcat-ajp.jar;D:\Program Files\Apache Tomcat 4.0\server\lib\servlets-manager.jar;D:\j2sdk1.4.0\jre\lib\charsets.jar;D:\j2sdk1.4.0\jre\lib\jaws.jar;D:\j2sdk1.4.0\jre\lib\jce.jar;D:\j2sdk1.4.0\jre\lib\jsse.jar;D:\j2sdk1.4.0\jre\lib\rt.jar;D:\j2sdk1.4.0\jre\lib\sunrsasign.jar;D:\j2sdk1.4.0\jre\lib\ext\dnsns.jar;D:\j2sdk1.4.0\jre\lib\ext\ldapsec.jar;D:\j2sdk1.4.0\jre\lib\ext\localedata.jar;D:\j2sdk1.4.0\jre\lib\ext\sunjce_provider.jar;D:\j2sdk1.4.0\jre\lib\ejb10deployment.jar;D:\j2sdk1.4.0\jre\lib\j2ee-ri-svc.jar;D:\j2sdk1.4.0\jre\lib\j2ee.jar;D:\j2sdk1.4.0\jre\lib\j2eetools.jar;D:\j2sdk1.4.0\jre\lib\jhall.jar;D:\projects\classes org.apache.catalina.startup.Bootstrap start
Catalina.start: LifecycleException: null.open: java.net.BindException: Address already in use: JVM_Bind:8080
LifecycleException: null.open: java.net.BindException: Address already in use: JVM_Bind:8080
     at org.apache.catalina.connector.http.HttpConnector.initialize(HttpConnector.java:1130)
     at org.apache.catalina.core.StandardService.initialize(StandardService.java:454)
     at org.apache.catalina.core.StandardServer.initialize(StandardServer.java:553)
     at org.apache.catalina.startup.Catalina.start(Catalina.java:780)
     at org.apache.catalina.startup.Catalina.execute(Catalina.java:681)
     at org.apache.catalina.startup.Catalina.process(Catalina.java:179)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:243)
----- Root Cause -----
java.net.BindException: Address already in use: JVM_Bind:8080
     at org.apache.catalina.connector.http.HttpConnector.open(HttpConnector.java:950)
     at org.apache.catalina.connector.http.HttpConnector.initialize(HttpConnector.java:1128)
     at org.apache.catalina.core.StandardService.initialize(StandardService.java:454)
     at org.apache.catalina.core.StandardServer.initialize(StandardServer.java:553)
     at org.apache.catalina.startup.Catalina.start(Catalina.java:780)
     at org.apache.catalina.startup.Catalina.execute(Catalina.java:681)
     at org.apache.catalina.startup.Catalina.process(Catalina.java:179)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:243)

I has tested "http://localhost:8080/" in my web browser,
it is tomcat home page.
This is my context.When I run the java projest,it reports the 8080 port error,
why?Thanks a lot.
This is GetDemo.java:
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class GetDemo extends HttpServlet
public void doGet(HttpServletRequest req,
HttpServletResponse resp)
throws ServletException,IOException
resp.setContentType("text/html");
PrintWriter out=resp.getWriter();
String username=req.getParameter("uname");
String password=req.getParameter("userpw");
out.println("<HTML>");
out.println("<HEAD><TITLE>GetDemo</TITLE></HEAD>");
out.println("<BODY>");
out.println("Hello "+username+"<br>");
out.println("Your password was: "+password+"<br>");
out.println("</BODY>");
out.println("</HTML>");
out.close();
This is GetExample.html:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
"http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
<TITLE>Get example</TITLE>
</HEAD>
<BODY>
<font size="4">
<center>Please enter your name and passwd then press Start<br>
<FORM ACTION="http://localhost/projects/GetDemo" METHOD="GET">
Name:<INPUT TYPE="text" name="uname" value="" size="20"><BR>
Password:<INPUT TYPE="password" name="userpw" value="" type="password" size=10>
<INPUT TYPE="submit" value="Start"><BR>
</INPUT></INPUT></INPUT></FORM>
<center><HR>
</BODY>
</HTML>
This is 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.MemoryRealm" />





<Host name="localhost" debug="0" 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="/GetDemo" docBase="d:\projects\GetDemo" />

<Context path="/examples" docBase="examples" debug="0"
reloadable="true" crossContext="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_examples_log." suffix=".txt"
     timestamp="true"/>
<Ejb name="ejb/EmplRecord" type="Entity"
home="com.wombat.empl.EmployeeRecordHome"
remote="com.wombat.empl.EmployeeRecord"/>

          
<Environment name="maxExemptions" type="java.lang.Integer"
value="15"/>
<Parameter name="context.param.name" value="context.param.value"
override="false"/>
<Resource name="jdbc/EmployeeAppDb" auth="SERVLET"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/EmployeeAppDb">
<parameter><name>user</name><value>sa</value></parameter>
<parameter><name>password</name><value></value></parameter>
<parameter><name>driverClassName</name>
<value>org.hsql.jdbcDriver</value></parameter>
<parameter><name>driverName</name>
<value>jdbc:HypersonicSQL:database</value></parameter>
</ResourceParams>
<Resource name="mail/Session" auth="Container"
type="javax.mail.Session"/>
<ResourceParams name="mail/Session">
<parameter>
<name>mail.smtp.host</name>
<value>localhost</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>

Does anyone have a good server.xml file for tomcat?

I am trying to link apache and tomcat on a RedHat 9 computer. I previously posted a message stating that I could not get tomcat to "automagically" make the configuration files (mod_jk.conf-auto) that all the manuals promised it would. However, I found that my problem was the lack of an ApacheConfig tag in the server.xml file. After looking at my server.xml file, I found that it was much more simplistic than I would hoped = it did not have enough comments or commented out options. It had none of the directives that the manuals said it included by default.
In short, does anyone who has apache and tomcat linked have a server.xml file that I can look at so that I can figure out what I must add to mine to get tomcat working with apache? I would greatly appreciate it if you could copy and paste the whole thing here.
Thank you very much in advance.
Edward S. Rice

Hi!
I am having the Apache-Tomcat4.0 version installed on a Win2000 machine. I am pasting here my server.xml. Hope it will be useful to you. I even didnot do much modifications to my server.xml except for adding a context.
Please come back if problem persists.



<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"/>












<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.MemoryRealm" />





<Host name="localhost" debug="0" 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="/vijay" docBase="D:\Java\servlets" debug="0"/>

<Context path="/manager" docBase="manager"
debug="0" privileged="true"/>

<Context path="/examples" docBase="examples" debug="0"
reloadable="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_examples_log." suffix=".txt"
     timestamp="true"/>
<Ejb name="ejb/EmplRecord" type="Entity"
home="com.wombat.empl.EmployeeRecordHome"
remote="com.wombat.empl.EmployeeRecord"/>

          
<Environment name="maxExemptions" type="java.lang.Integer"
value="15"/>
<Parameter name="context.param.name" value="context.param.value"
override="false"/>
<Resource name="jdbc/EmployeeAppDb" auth="SERVLET"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/EmployeeAppDb">
<parameter><name>user</name><value>sa</value></parameter>
<parameter><name>password</name><value></value></parameter>
<parameter><name>driverClassName</name>
<value>org.hsql.jdbcDriver</value></parameter>
<parameter><name>driverName</name>
<value>jdbc:HypersonicSQL:database</value></parameter>
</ResourceParams>
<Resource name="mail/Session" auth="Container"
type="javax.mail.Session"/>
<ResourceParams name="mail/Session">
<parameter>
<name>mail.smtp.host</name>
<value>localhost</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"
acceptCount="10" debug="0"/>

<Engine className="org.apache.catalina.connector.warp.WarpEngine"
name="Apache" debug="0" appBase="webapps">

<Logger className="org.apache.catalina.logger.FileLogger"
prefix="apache_log." suffix=".txt"
timestamp="true"/>

<Realm className="org.apache.catalina.realm.MemoryRealm" />
</Engine>
</Service>
</Server>

Actuator valves v/s global valves

Similar Messages

Maybe you are looking for