Scheduling Oracle SOA Suite Composite Applications (or whatever you want) in Weblogic

After reading a nice article about TimerManager functionality in Weblogic, i wanted to see how easy it would be to schedule my test composite application.

First deploy your composite and go to SOA > soa-infra > default > Test > WSDL.
Copy/paste the wsdl, this one we will use to generate the web proxy.
Back in JDeveloper create a new Application (or add it to an existing one), and create a new Web Project.

Select the jsp option, we will use this page later to trigger the scheduler.

Generating the Web Proxy

Right mouseclick on the Project > New > Business Tier > Web Services > Web Service Proxy


Fill in the url which we copy/pasted from the Test console of the composite application.


Fill in your package structure


We only have a synchronious service call


Here we have the option to apply any policies

This will generate all the code we need to invoke the composite application (wsdl).
The class with the name ending with ‘_ptClient’ contains all the code needed to do the invoke from java. This we will reuse later on.
For a little test, change the code so it calls the correct method of your composite application and check the console to see if it triggers a new instance.
Now we know for sure the proxy code itself is working, so we can go on with the code to schedule the invoke.

TimerManager

The code of the TimerManager i borrowed from this excellent blog.
Create both ‘TimerServlet’ servlet and the ‘TimerListener’ class, edit web.xml, and add link to the servlet to the index.jsp which we generated in one of the earlier steps.

Now copy/paste the example code of the ‘_ptClient’ class to the ‘TimerListener’ class, and select the method you want to call (in my case the ‘process’ method).

Deploy and Run

Add a new WAR File Deployment Profile to the project.
Right mouseclick on the Project > Deploy > MyTimerApp and either select to deploy right away to the Application Server or to a local WAR archive.

Go to the url of the index.jsp to trigger the scheduler, for example http://localhost:8001/MyBPELTimer-MyTimerClient-context-root/index.jsp

Console output

inside timerExpired()
Starting schedule bpel, Fri May 21 12:25:03 CEST 2010
Finishing schedule bpel, response is : setOutput
exiting timerExpired()

inside timerExpired()
Starting schedule bpel, Fri May 21 12:25:13 CEST 2010
Finishing schedule bpel, response is : setOutput
exiting timerExpired()

inside timerExpired()
Starting schedule bpel, Fri May 21 12:25:23 CEST 2010
Finishing schedule bpel, response is : setOutput
exiting timerExpired()

Overview of the Composite instances which were created

Resources

http://weblogic-wonders.com/weblogic/2010/05/02/weblogic-timermanager-for-scheduling-tasks/
http://blogs.oracle.com/jamesbayer/2009/04/a_simple_job_scheduler_example.html

Download

JDeveloper Project – It includes the generated code/imports against my own composite application. Regenerate the code against your own wsdl, and revalidate the code.

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Oracle SOA Suite 11g, Resequence messages in Mediator

“A Resequencer is used to rearrange a stream of related but out-of-sequence messages back into order. It sequences the incoming messages that arrive in a random order and then send them to the target services in an orderly manner. The sequencing is done based on the sequencing strategy selected.”

For the resequencer to work we need to have 2 values in the source payload. The first one is a sequenceID, and the next one is a groupdID. The sequenceID will be used as identifier for the message itself. The groupID will be used to group the messages in which the resequencer will rearrange the messages based on the sequenceID. Different groups will have seperate processing, so they won’t have any influence on each other.

The mediator supplies us 3 types of resequencers :

  • Standard Resequencer
  • FIFO Resequencer
  • BestEffort Resequencer

Let’s test the first one.

For this i created the next composite

In here i just map the input of the process 1on1 to the File adapter, which will store the input of the process on filesystem.

Interface of the composite

<?xml version="1.0" encoding="UTF-8"?> 
<schema attributeFormDefault="unqualified"
	elementFormDefault="qualified"
	targetNamespace="http://xmlns.oracle.com/Application1_jws/MyReSequence/ProcessEmployees"
	xmlns="http://www.w3.org/2001/XMLSchema">
	<element name="process">
		<complexType>
			<sequence>
				<element name="empID" type="string"/>
        <element name="empType" type="string"/>
        <element name="empName" type="string"/>
			</sequence>
		</complexType>
	</element>
	<element name="processResponse">
		<complexType>
			<sequence>
				<element name="result" type="string"/>
			</sequence>
		</complexType>
	</element>
</schema>

Configuration of the sequencer

Doubeclick the mediator component in the composite.

For the Resequence Level we can select ‘operations’ or ‘component’.
For Mediator components which only have 1 operation it doesn’t matter which one we select. For a Mediator component which consists of more then 1 operation and selecting the ‘component’ option means resequencing is applied to all operations in it. For this test we selected the ‘component’ option and used the ‘Standard’ mode.
Now we have several options to configurate the resequencer.

  • Group – xpath expression to the field in the payload which the resequencer will use to group our incoming messages
  • ID – xpath expression to the field which will uniquely identify our message
  • Start – Start value of the ID in the incoming message
  • Increment – Value which will be used for the increment of the id field in the upcoming messages
  • Timeout – Time to wait before a following expected message arrives at the Mediator component

And that’s it what is needed for the configuration of the ‘Standard’ resequencer.

Test

To test this scenario i will use the following 3 messages.

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    	<soap:Body xmlns:ns1="http://xmlns.oracle.com/Application1_jws/MyReSequence/ProcessEmployees">
        		<ns1:process>
            			<ns1:empID>1</ns1:empID>
            			<ns1:empType>IT</ns1:empType>
            			<ns1:empName>Eric</ns1:empName>
        </ns1:process>
    </soap:Body>
</soap:Envelope>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    	<soap:Body xmlns:ns1="http://xmlns.oracle.com/Application1_jws/MyReSequence/ProcessEmployees">
        		<ns1:process>
            			<ns1:empID>2</ns1:empID>
            			<ns1:empType>IT</ns1:empType>
            			<ns1:empName>John</ns1:empName>
        </ns1:process>
    </soap:Body>
</soap:Envelope>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    	<soap:Body xmlns:ns1="http://xmlns.oracle.com/Application1_jws/MyReSequence/ProcessEmployees">
        		<ns1:process>
            			<ns1:empID>3</ns1:empID>
            			<ns1:empType>IT</ns1:empType>
            			<ns1:empName>Theo</ns1:empName>
        </ns1:process>
    </soap:Body>
</soap:Envelope>

Go to the console > soa_domain > SOA > soa-infra > > and Test it.
If we trigger the process 3 times with the payloads as we describes and in the same sequence, the instances will all complete and write the files to filesystem in the same sequence.

We used the ‘Standard’ mode and selected empID for sequence-value and emptType for group-value, and the sequence should start with 1 and will increment by 1.

Now switch the last 2 messages in the sequence and see what happens. Since we’re trying to process and already processed message again we will get the next errormessage

The selected operation execute could not be invoked.
An exception occured while invoking the webservice operation. Please see logs for more details.
oracle.sysman.emSDK.webservices.wsdlapi.SoapTestException: oracle.tip.mediator.infra.exception.MediatorException: ORAMED-03003:[Storing Resequencer Group Failed]Unable to store Resequencer Group." oracle.tip.mediator.common.persistence.MediatorResequencerMessage, mediator InstanceId=E07531315F8511DFBFBF3B164F19FDA3, componentDn=default/MyReSequence!1.0/Mediator1, operation=execute, groupId=IT, sequenceId=1, status=0"Possible Fix:Unable to store Resequencer Group. Check your Database connection or check data

So change all empType to ‘HR’ instead of ‘IT’.
For example

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    	<soap:Body xmlns:ns1="http://xmlns.oracle.com/Application1_jws/MyReSequence/ProcessEmployees">
        		<ns1:process>
            			<ns1:empID>1</ns1:empID>
            			<ns1:empType>HR</ns1:empType>
            			<ns1:empName>Eric</ns1:empName>
        </ns1:process>
    </soap:Body>
</soap:Envelope>

The sequence we’re now going to use is empID=1, empID=3, empID=2

After sending the second message (empID=3), you will notice the instance won’t complete. Because the resequencer expects an empID=2. In this case it will wait till this message arrives.

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    	<soap:Body xmlns:ns1="http://xmlns.oracle.com/Application1_jws/MyReSequence/ProcessEmployees">
        		<ns1:process>
            			<ns1:empID>2</ns1:empID>
            			<ns1:empType>HR</ns1:empType>
            			<ns1:empName>Eric</ns1:empName>
        </ns1:process>
    </soap:Body>
</soap:Envelope>


Now use the last test message (empID=2) and see what happens.

Instance 30030 changes from Running to Completed. This is because it received the next message in the sequence (empID=2), and after that the instance 30030 (empID=3) could continue.
If we check the files on filesystem we also see (compair the datetime of the files) that the files are stored in the correct sequence.

Other Resequencers

Besides the ‘Standard’ resequencer wel also have the ‘FIFO’- and the ‘BestEffort’ resequencer.
See this document to decide what resequencer suits best for your case.

Oracle SOA Suite 11g, Enable logging for EDN events

By default the logging for the events are turned off.

Connect to your DEV_SOAINFRA schema and execute :

DECLARE
  ENABLED NUMBER;
BEGIN
  ENABLED := 1;

  EDN_ENABLE_LOGGING(
    ENABLED => ENABLED
  );
END;

Trigger a new business event and select the logging in the ‘EDN_LOG_MESSAGES_TABLE’ (select * from edn_log_messages)

Oracle SOA Suite, Launch Message Flow Trace in Google Chrome

During testing of some of my composite applications i just couldn’t get the ‘Launch Message Flow Trace’ link showing the output (popup it seemed later on).
Chrome didn’t came up with the a blocking popup so it didn’t ring any bells.

Google Chrome > Options > Under the Hood > Content Settings > Pop-ups > and add your hostname to the exception list

Oracle SOA Suite 11g, wrong settings after re-installation of SOA domain

During my installation of the 11g SOA Suite, things go bad once in a while and domains need to be created and removed, etc.

After last remove and new installation of my domain i got the next error message during startup of the Admin Server :

javax.transaction.SystemException: 
weblogic.transaction.loggingresource.LoggingResourceException: 
java.sql.SQLException: JDBC LLR, table verify failed for table 'WL_LLR_ADMINSERVER', row 
'JDBC LLR Domain//Server' record had unexpected value 'soa11g_new_domain//AdminServer' expected 
'soa_domain//AdminServer'*** ONLY the original domain and server that creates an LLR table
may access it ***

Easy fix would be :

Start sqlplus and connect to ‘DEV_SOAINFRA’ schema.

update WL_LLR_ADMINSERVER
set    RECORDSTR = 'soa_domain//AdminServer'
where  XIDSTR    = 'JDBC LLR Domain//Server';

commit;

Oracle SOA Suite 11g Patch Set 2, installation

Once in a while i just clean my how Oracle environment and start from scratch which a clean one.

For this new installation i used the next set of installations

Loopback adapter

Optional installation of the Microsoft Loopback adapter (in case of dhcp)

Oracle Database 11g Release 2, Enterprise Edition

Follow the installation guide

*Note
Install the new db and update a few system parameters, otherwise the installation of the SOA Suite will fail

  • alter system set processes=500 scope=spfile;
  • alter system set open_cursors=500 scope=spfile;

Repository Creation Utility

Run: rcuHome/bin/rcu.bat
Select the components you need and finish installation








WebLogic Server

Run: wls1033_oepe111150_win32.exe
Create a new Middleware Home




SOA Suite

Oracle SOA Suite patchset1 was a fullblown new release. For the installation of the new patchset 2, we first need to install the patchset1 release.
Without it you will face the next message 😉

Run: Disk1/setup.exe (soa_11.1.1.2.0)
Select the Middleware Home we just created with the installation of Patchset 1





Run: Disk1/setup.exe (soa_11.1.1.3.0)



Configure Oracle SOA Suite

Run: middleware/wlserver_10.3/common/bin/config.exe
We’ll create a new weblogic domain for the soasuite components. Select the components you want to get installed in the domain, configurate database-settings and go.









Install Oracle Composite Editor for Jdeveloper

I use the manual install of the extension, but you can also update it fron within JDeveloper itself.
Help > Check for Updates > Source > Install From Local File, and Browse to the downloaded zip file, and your done.

*Note
If your Application Server Connection test fails in Jdeveloper, check if the proxy settings in Jdeveloper are correct. By default it’s turned on.

And that’s pretty much it of what’s needed for the installation of a new Oracle SOA Suite stack.

Oracle SOA Suite 11g and the new Partitions feature

In the old school Oracle SOA Suite we had the functionality to create different domains in the BPEL Console to group our applications.
This functionality was gone in the 11g SOA Suite, and because it still was a wanted feature, Oracle reintroduced it as feature in the new Oracle SOA 11g Patchset2.

Now it’s called ‘Partitions’.

So let’s see how to manage them.
Go to the Enterprise Manager (http://localhost:7001/em), Farm_ > SOA > soa-infra (soa_server1).
Right mouseclick on soa-infra > Manage Partitions. Create the new partition.

The new partition should be added to the list (beneath the default partition).

JDeveloper
In JDeveloper we will create a simple SOA Composit application.
Deploy the new application and now in the wizard of the deployment when we select a server it gives us a new selectbox to select the newly created partition. By default it will use the ‘default’ partition.

Deploy the application and let’s go back to the console.
Now we will see the new deployed application in the list of the ‘test_partition’ partition.

Using ant

ant-sca-mgmt.xml createPartition – Creates a partition in the SOA Infrastructure.
Location of the file :

<ORACL_MIDDLEWARE_HOME>/bin

ant -f ant-sca-mgmt.xml createPartition -Dhost=localhost -Dport=8001 -Duser=weblogic -Dpassword=weblogic -Dpartition=my_ant_partition

Buildfile: ant-sca-mgmt.xml
     [echo] oracle.home = E:\oraclehome\11g\middleware\Oracle_SOA1\bin/..

createPartition:
    [input] skipping input as property host has already been set.
    [input] skipping input as property port has already been set.
    [input] skipping input as property user has already been set.
[secure-input] skipping secure-input as property password has already been set.
    [input] skipping input as property partition has already been set.
     [echo] oracle.home = E:\oraclehome\11g\middleware\Oracle_SOA1\bin/..

folderMgrTask:
     [java] calling FolderManager.initConnection(), m_host=localhost, m_port=8001, m_user=weblogic
     [java] Connecting to: service:jmx:t3://localhost:8001/jndi/weblogic.management.mbeanservers.runtime
     [java] connection initiated
     [java] folderMBean=oracle.soa.config:name=soa-infra,j2eeType=FolderLifecycleConfig,Application=soa-infra
     [java] Partition (my_ant_partition) is successfully created.

BUILD SUCCESSFUL

And the partitions list in the console

Using wlst

http://download.oracle.com/docs/cd/E14571_01/web.1111/e13813/custom_soa.htm#CDEHBBID
SOA Composite Application Partition Management Commands