How can i monitor in JPA

[chaojun zhang]

Hi 

   I'm using jpa in my project ,how can i make the jta datasource list below which reference in persistence.xml  can be monitored?

    I have persistence.xml :

   <?xml version="1.0" encoding="UTF-8"?>

<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">

<persistence-unit name="my-persistence-unit" transaction-type="JTA">

<jta-data-source>java:/exampleDS</jta-data-source>

    ......

</persistence>

   

[Richard Richter]

Hi

There is nothing specific for JPA monitoring, but Datasource
monitoring is possible. You have to reconfigure your URL for
datasource (in ideal case) like you can read here:
http://code.google.com/p/javasimon/wiki/JavaEE

Be aware though, if you datasource is configured on application server
level, then you have to pull the Simon libs all the way up to server
libs!

Cheers

Virgo

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[chaojun zhang]

Ok, another question is  how can I disable the monitor as i don't want always log into file or stdout?

[Richard Richter]

Hi

There are more ways how to do it, but they all get down to the call on
Manager. For instance - directly in code: SimonManager.disable();

Where to put this code is really up to you. Currently there is no out
of the box solution.

Virgo

[chaojun zhang]

1)How can I to wrap a XA Datasource ,since the class WrappingSimonDataSource only used for wrap java.sql.Datasource but not the XaDatasource?

2)i use open source jdts as sql server driver , how can i to wrap this in application server (jboss as 7.1.1)

[Richard Richter]

Well, you have to realize, that Simon is a lot "do it yourself"
solution and we can't even test everything we do... talking about this
package:
http://javasimon.googlecode.com/git-history/with-javadoc/api-3.4/org/javasimon/jdbcx4/package-summary.html

There is stuff for XA, but you're rather on your own, unless somebody
on the list has this particular experience.

I can't answer the second question at all.

Virgo

[chaojun zhang]

For question 2:

   Because jtds driver seems can't set the url in the jboss standalone.xml,but the SimonConnectionConfiguration constructor required a  url as parameter .So is it possible to wrap JtdsDataSource  (XA Datasource) ?

  I have jtds xa-datasource configuration in my standalone.xml(you will see that no URL is required for jtds):

  <xa-datasource jta="true" jndi-name="java:/App-MSSQL" pool-name="mssqlPool" enabled="true" use-java-context="true" use-ccm="true">

<driver>JTDS</driver>

<xa-datasource-property name="ServerName">127.0.0.1

</xa-datasource-property>

<xa-datasource-property name="PortNumber">1433

</xa-datasource-property>

<xa-datasource-property name="DatabaseName">xxxx

</xa-datasource-property>

<xa-datasource-property name="Instance">xxxx

</xa-datasource-property>

<security>

<security-domain>secdomain-ocelot</security-domain>

</security>

<xa-pool>

<min-pool-size>5</min-pool-size>

<max-pool-size>40</max-pool-size>

<prefill>true</prefill>

</xa-pool>

<driver>JTDS</driver>

<validation>

<check-valid-connection-sql>select 1</check-valid-connection-sql>

</validation>

</xa-datasource>

[chaojun zhang]

Is it possible to use SimonXADatasource in the standaone.xml ?

[chaojun zhang]

Because I don't want to wrap the datasource by programming in my java code, i just want to wrap the whole datasource in the jboss configuration file?

So is it possible to use SimonXADatasource in my configuration instead of real xa-datasource class specify in configuration file?

On Tuesday, October 29, 2013 5:44:13 PM UTC+8, Virgo47 wrote: