Calling a vi in multiple instances

Hi All,
Is Reentrant VI the Best option for calling a subvi in multiple instances?
Can I use semaphore.?
Is there any other ways proven best.
Thanks,
Davidson

davidson.d wrote:
I have a subVI (reentrant) which is being used 20 times in the Main VI.
All the subVIs run in parallel with independent data input and output.
Each use of the subVI in my main VI is what i mentioned as "muliple Instances"
As You mentioned about the memory usage, this VI would take 20 copies of the subVI everytime.
I was not sure whether this (reentrant) aproach right .
Regarding semaphore, i'm not yet tried. I thought of possibility to implement without reentrant VI.
Can You get me..?
It really depends on what the subVI does. Does each one run for extended periods and do you really need to run all of them in parallel? (after all, you most likely don't have 20 CPUs).
If you don't make it re-entrant, only one instance can run at the same time and other instances will wait automatically until they get their turn. No semaphores needed.
If typically only a few run in parallel, you can configure it for "shared clones", striking a possibly better balance between memory use and parallelism.
It would help if you could be more specific on how your main program is layed out and what the subVI actually does. The best solution strongly depends on this information.
LabVIEW Champion . Do more with less code and in less time .

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Web colsole --> your domain --> your server --> configuration -->
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Regards,
Slava Imeshev
"Soni " <[email protected]> wrote in message
news:3dcfbbcb$[email protected]..
>
Hi:
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Hi, :)
and I would like each thread to access a different
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Best Regards,
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My current example code is the following:
JAVA:
===
CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED CODAROUL."RMG/BO/RMG_OBJECT" as package RMG.BO;
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private static RMG_OBJECT instance = new RMGOBJECT();
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private RMG_OBJECT(){
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System.out.println("object name is : " + _instance.rmgObjectNaam);
return _instance.rmgObjectNaam;
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try
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return 1;
catch (Exception e)//catch
System.out.println("Other Exception: " + e.toString());
e.printStackTrace();
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==========
CREATE OR REPLACE FUNCTION CODAROUL.SET_RMGOBJECT_NAAM(NAAM IN VARCHAR2) return NUMBER AS
LANGUAGE JAVA NAME 'RMG.BO.RMG_OBJECT.SET_RMGOBJECT_NAAM (java.lang.String) return java.lang.Integer';
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==========
CALL dbms_java.set_output(2000);
select CODAROUL.GET_RMGOBJECT_NAAM() from dual;
Edited by: RubenS_BE on Apr 6, 2012 5:35 AM
Edited by: 925945 on Apr 6, 2012 5:41 AM

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thanks in advance!

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I�m trying to think of a way to have multiple instances of the same bean class in session scope using JSF. For example, let�s say that I have two <h:dataTable>s on the same page. They both use the backing bean called genericBean. Now, the content for genericBean will be different for each <h:dataTable>. In fact, the data source that backs genericBean is not known until runtime. It could be a database, web service, etc.
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Thanks,
Randy

Well, I came up with an interesting solution to this so I thought that I would post it here.
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<html>
<head>
<title>My Page</title>
</head>
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<jsp:include page="component.jsp">
<jsp:param name="id" value="a" />
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</f:subview>
<hr>
<f:subview id="component2">
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<jsp:param name="id" value="b" />
</jsp:include>
</f:subview>
</f:view>
</body>
</html>
And component.jsp looke like this.
<f:verbatim>
<p>
<h1>Component
</f:verbatim>
<h:outputText value=" #{param.id}" />
<f:verbatim>
</h1>
</p>
</f:verbatim>
<h:form>
<h:outputText value="#{component.id}" />
<h:outputText value="#{component.value}" />
<h:commandButton value="increment" action="#{component.increment}" />
<h:commandButton value="decrement" action="#{component.decrement}" />
<f:verbatim>
<input type="hidden" name="id"
value="</f:verbatim><h:outputText value="#{param.id}"/><f:verbatim>" />
</f:verbatim>
</h:form>
The idea is that I want component.jsp to be initialized differently based on the id param. The component managed bean is configured to be in session scope but I want the component instance for id a and id b to be different instances in session scope. Therefore, I added a custom variable resolver to handle this.
public Object resolveVariable(FacesContext context, String name) {
// This id will be different for the different subviews.
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String id = request.getParameter("id");
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// Build the new name for the key of this bean
String newName = name + "_" + id;
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Hi there,
I'm wondering what's the best way to use multiple instances of the same BEX query. Let me explain what I mean:
I have a dashboard with different queries feeding different period of time such as: week to date, month to date and so on. One query for each since it is based on a user exit.
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Should I bind those to the excel file and use formulas to make final calculations?
Will there be a performance issues for adding different instances of the same query
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I hope my question is clear enough, if not please do not hesitate I'll clarify as much as possible.
Regards,
Steve

Hi Steve,
Might be trying for solution for a long time, If i understood your question clear let me clarify you few points.
You are trying to access the bex query which is designed with the exit's in the background based on the logic and trying to call the entire dimensions and key-figures in a single connection. Then you are trying to map those data in the charts.
Steve, try to make more connections based upon the logic and split them. use the same query but split them by sales per customer group, sales per day, sales per week by making three different connections and try. You can merge the prompts from all connections.
Hope this Helps!!!
Sorry if i misunderstood your question.
--SumanT

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Hi,
I am having trouble opening multiple instances of the same vi.
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l displaying the two strings and one numeric value from the main.vi.
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Attachments:
popupVI.zip ‏37 KB

You have to clone the VI. You say you have tried to use the .vit way of cloning...but in the example there is no use of VIT and the VI is called statically. If you want to open multiple instances of the same VI and the VI has a user interface (or needs to be a unique instance of the VI every time even though it's called the same place in the diagram, not the case here though) you need to do it dynamically, i.e. with an invoke node.
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http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&
RPAGEID=135&HOID=506500000008000000A07D0000&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0&USEARCHCONTEXT_QUESTION_0=VI+cloning&USEARCHCONTEXT_QUESTION_S=0
About the memory leak problem:
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500000008000000B7A40000&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0&USEARCHCONTEXT_QUESTION_0=VI+cloning&USEARCHCONTEXT_QUESTION_S=0
MTO

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I have a stateless session bean.
The methods on the bean operate against DB tables.
Q: Can I deploy multiple instances of the same
stateless session bean, but specify a different
JNDI/datasource name in the deployment descriptor?
The method calls are all enclosed within a single
invocation, just that I need to hit different
databases (all with the same schema), and Id like to
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and have the exact same functionality, just against
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Does the spec allow/support this?
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Im using JBoss 3.2.1 on Solaris, so Im not sure
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of the EJB Spec (or me being just plain wrong and
trying to do something the "wrong way")
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<local-home>com.mycorp.MySessionLocalHome</local-home>
<local>com.mycorp.MySessionLocal</local>
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<display-name>MySessionBeta</display-name>
<ejb-name>MySessionBeta</ejb-name>
<home>com.mycorp.MySessionRemoteHome</home>
<remote>com.mycorp.MySessionRemote</remote>
<local-home>com.mycorp.MySessionLocalHome</local-home>
<local>com.mycorp.MySessionLocal</local>
<ejb-class>com.mycorp.MySessionFacadeBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
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<res-ref-name>jdbc/DataSource</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</session>
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<session>
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<resource-ref>
<res-ref-name>jdbc/datasource</res-ref-name>
<jndi-name>java:/Database1</jndi-name>
</resource-ref>
</session>
<session>
<ejb-name>MySessionBeta</ejb-name> <jndi-name>ejb/com/mycorp/MySessionBetaRemoteHome</jndi-name> <local-jndi-name>ejb/com/mycorp/MySessionBetaLocalHome</local-jndi-name>
<resource-ref>
<res-ref-name>jdbc/datasource</res-ref-name>
<jndi-name>java:/Database2</jndi-name>
</resource-ref>
</session>

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Hi folks,
I have a question...
I have inherited a large APEX application, it uses Oracle SSO to log in.
We are migrating the application to a new set of servers and are running regression tests.
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an application Admin user (username ADMINTEST123) logged into the application on newTest
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Thanks in advance,
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Hi lev,
thanks but sorry, that doesn't really help me, I'm talking about users and their logins, not developers using different browsers while developing apex.
Also, our users are locked down to IE6 for the foreseeable future.
Hi Scott,
I found the following quote from this web site http://aranea.zuavra.net/index.php/80/ about Cookie separation in modern browsers
*4.3. Internet Explorer 6.0*
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I have an instance of oracle Enterprise Data Quality tool running on an apache-tomcat-7 server. Port 8080
Now I have a requirement of Installing another instance of OEDQ on the same server, but a different APACHE_HOME directory and a different Port Number (8081).
So the question is, Can we install multiple instances of OEDQ on a single server?
If so, what are the prerequisites to be maintained.
I did my bit of tries, but ended up having issues with some java errors.
I have posted the error message below.
SEVERE: Context initialization failed
*org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'casemanager' defined in class path resource [conf/casemanagement.xml]: Cannot resolve reference to bean 'casedao' while setting bean property 'caseDAO';*
The complete Error Log in the Catalina.out file is pasted below.
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /u100/app/PCEXDB/orpcexmt/oracle/loqate:/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
May 13, 2013 12:50:08 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8081"]
May 13, 2013 12:50:08 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8010"]
May 13, 2013 12:50:08 AM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 792 ms
May 13, 2013 12:50:08 AM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
May 13, 2013 12:50:08 AM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.29
May 13, 2013 12:50:08 AM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive /u100/app/PCEXDB/orpcexmt/oracle/OEDQ2/apache-tomcat-7.0.29/webapps/dndirector.war
May 13, 2013 12:50:13 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: http://struts.apache.org/tags-tiles is already defined
May 13, 2013 12:50:13 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: http://struts.apache.org/tags-html is already defined
May 13, 2013 12:50:13 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: http://struts.apache.org/tags-bean is already defined
May 13, 2013 12:50:13 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: http://struts.apache.org/tags-logic is already defined
May 13, 2013 12:50:13 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: http://struts.apache.org/tags-nested is already defined
May 13, 2013 12:50:13 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: http://struts.apache.org/tags-bean is already defined
May 13, 2013 12:50:13 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: http://struts.apache.org/tags-html is already defined
May 13, 2013 12:50:13 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: http://struts.apache.org/tags-logic is already defined
May 13, 2013 12:50:13 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: http://struts.apache.org/tags-nested is already defined
May 13, 2013 12:50:13 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: http://struts.apache.org/tags-tiles is already defined
May 13, 2013 12:50:14 AM org.springframework.web.context.ContextLoader initWebApplicationContext
INFO: Root WebApplicationContext: initialization started
May 13, 2013 12:50:14 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing com.datanomic.director.startup.WebApplicationContext@2dfe88b8: display name [Root WebApplicationContext]; startup date [Mon May 13 00:50:14 CDT 2013]; root of context hierarchy
May 13, 2013 12:50:16 AM com.datanomic.director.startup.WebApplicationContext loadBeanDefinitions
INFO: Spring bean loading complete.
May 13, 2013 12:50:24 AM org.springframework.web.context.ContextLoader initWebApplicationContext
SEVERE: Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'casemanager' defined in class path resource [conf/casemanagement.xml]: Cannot resolve reference to bean 'casedao' while setting bean property 'caseDAO'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'casedao' defined in class path resource [conf/casemanagement.xml]: Cannot resolve reference to bean 'casemetadata' while setting bean property 'caseMetadata'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'casemetadata' defined in class path resource [conf/casemanagement.xml]: Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'flags' threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:275)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:104)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1245)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:472)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
at com.datanomic.director.startup.WebApplicationContext.refresh(WebApplicationContext.java:109)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'casedao' defined in class path resource [conf/casemanagement.xml]: Cannot resolve reference to bean 'casemetadata' while setting bean property 'caseMetadata'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'casemetadata' defined in class path resource [conf/casemanagement.xml]: Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'flags' threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:275)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:104)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1245)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:472)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:269)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:104)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1245)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:472)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
at com.datanomic.director.startup.WebApplicationContext.refresh(WebApplicationContext.java:109)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:963)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1600)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'casemetadata' defined in class path resource [conf/casemanagement.xml]: Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'flags' threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1279)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:472)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:269)
... 46 more
Caused by: org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'flags' threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:104)
at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:59)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1276)
... 57 more
May 13, 2013 12:50:24 AM org.apache.catalina.core.StandardContext startInternal
SEVERE: Error listenerStart
May 13, 2013 12:50:24 AM org.apache.catalina.core.StandardContext startInternal
SEVERE: Context [dndirector] startup failed due to previous errors
May 13, 2013 12:50:25 AM org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
SEVERE: The web application [dndirector] registered the JDBC driver [oracle.jdbc.OracleDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
May 13, 2013 12:50:25 AM org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
SEVERE: The web application [dndirector] registered the JDBC driver [org.postgresql.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
May 13, 2013 12:50:25 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [dndirector] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@623e20db]) and a value of type [java.lang.Class] (value [class oracle.sql.TypeDescriptorFactory]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
May 13, 2013 12:50:25 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [dndirector] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@da1c402]) and a value of type [java.lang.Class] (value [class oracle.sql.AnyDataFactory]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
May 13, 2013 12:50:25 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory /u100/app/PCEXDB/orpcexmt/oracle/OEDQ2/apache-tomcat-7.0.29/webapps/docs
May 13, 2013 12:50:25 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory /u100/app/PCEXDB/orpcexmt/oracle/OEDQ2/apache-tomcat-7.0.29/webapps/examples
May 13, 2013 12:50:25 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory /u100/app/PCEXDB/orpcexmt/oracle/OEDQ2/apache-tomcat-7.0.29/webapps/manager
May 13, 2013 12:50:25 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory /u100/app/PCEXDB/orpcexmt/oracle/OEDQ2/apache-tomcat-7.0.29/webapps/ROOT
May 13, 2013 12:50:25 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory /u100/app/PCEXDB/orpcexmt/oracle/OEDQ2/apache-tomcat-7.0.29/webapps/host-manager
May 13, 2013 12:50:25 AM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8081"]
May 13, 2013 12:50:25 AM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8010"]
May 13, 2013 12:50:25 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 16882 ms
Can someone please tell me what is going wrong here?

Hi,
Multiple instances of EDQ on a single server is technically possible provided the installer takes care to avoid port conflicts. It is not the case that there is a single port used by an EDQ server, for example.
For various reasons, it is not officially supported; attempting to diagnose issues on custom installations on Tomcat is especially difficult and we do not provide documentation on this. In general, the requirement usually comes up for Dev/Test instances (as there is no performance advantage of using multiple instances on a single server), where we would recommend the use of virtualization where this is a requirement.
Regards,
Mike

Multiple instances of FileOutputStream

Hi, I'm learning how to use Java's multithreading features. I created a class called "ObjectMaker". An instance of this class serializes some objects into a file, using a FileOutputStream (inside an ObjectOutputStream) for writing. In the mean time an other object of another class deserializes those objects reading from the file. Each concurrent access to the file (for writing,reading) is synchronized. Here's the problem:[ u]if each writer has its own FileOutputStream, then the concurrent writing on the file doesn't work (despite of every writer is synchronized on the same object), and the reader aren't able to read anything from the file; if the FileOutputStream is static (every instance share the same FileOutputStream reference) everything works. I read on Documentation that some OS "allow a file to be opened for writing by only one FileOutputStream (or other file-writing object) at a time" .But it also says that I would recive an exception from FileOutputStream if I try to open a file for writing that is already open by another FileOutputStream....and It doesn't happen, no exception are thrown.Then here is the problem:It's possible to manage Multiple instances of FileOutputStream linked on the same file?

Hello Joseph,
Have u been successful on the installation.
There were no replies after yours.
Can you please let me know about installing 2 MDS instances on the same host.
If you have any document you followed please mail me to [email protected]
It will be more helpful as the dead line to this is killing me.
Regards,
VishnuM

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Hi,
I have a timestamping subVI that looks at a counter channel and applies timestamps. I want to create multiple instances of this subVI (8 to be exact) and have them all run in parallel (looking at 8 different channels). Someone gave me the following advice:
>>
Also, in case you want to call multiple instances of the same SubVI, and you want these multiple instances to execute in parallel, you will have to set the SubVI to execute in reentrant mode. Do this by opening the SubVI and going to "Edit >> VI Properties >> Execution" and enable "Reentrant execution".
<<
I've tried this but only my second instance (I started simple with only 2 instances) seems to monitor its channel and pass data along to the queue. I've included my code below, I have two signal simulators which simulate singles coming in on channels 2 and 3. I'm using a PCQI 6602 counter/timer card.
Any help would be greatly appreciated, thanks in advance,
Chris
Attachments:
LabView App (June 28, 2005).zip ‏158 KB

good news! Your reentrant VI is working and all three instances are running (as execution highlighting clearly shows). The problem is going to be an error that is occuring but you don't see because you are ignoring the error clusters internally in the timer. It looks like at one point it was set to quit if an error occurred. That still needs to be there.
Always hookup error clusters...
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Multiple instances of Crystal Reports Viewer possible in WPF?

Hi, I've dragged and dropped three Crystal Reports Viewer controls on my WPF application. The goal is to be able to select up to 3 reports from a listbox and click run to generate the reports simultaneously. When I select just one report, it works fine. However when I select multiple reports it throws errors (object not found, etc). It seems there is a problem with multiple threads. Is it possible to have multiple instances of the Crystal Report Viewer display reports simultaneously? I am using version 13.0.9.1312 from the link below along with VS2013 C# WPF.
SAP Crystal Reports, developer version for Microsoft Visual Studio: Updates & Runtime Downloads
Thanks,
Syed

I was able to quickly cobble together a two viewer app that looks like this:
The code is like this:
Public Sub New()
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For more details see the document WPF Project Using the Crystal Reports WPF Viewer in 8 Easy Steps
Now a couple of things to keep in mind;
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2) There is also a Print Job limit. This by default is set to 75. In a nutshell, almost anything done with a report is a Print Job. E.g.; paging, zooming, drilling, searching, etc., etc. In addition subreports are considered to be Print Jobs. Thus a report with one subreport in a detail section that returns a thousand rows of data and therefore running 1000 subreports will error out.
You can read more about Print Job limits here:
Crystal Reports Maximum Report Processing Jobs ... | SCN
- Ludek
Senior Support Engineer AGS Product Support, Global Support Center Canada
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