BPEL: File Adapter - Write Opeartion

Problem:Can we use File Adapter to write in a file in append mode. i.e. a BPEL process opening a file appending some text and closing the file each time it called.


Solution:
To write a file in append mode, you need to add one line in wsdl file.

Make an entry with Append="true"
inside tag found in wsdl file, created after Write file adapter.

PhysicalDirectory="C:\TMP"
InteractionSpec="oracle.tip.adapter.file.outbound.FileInteractionSpec"
FileNamingConvention="write.txt"
OpaqueSchema="true"
Append="true">

OAF vs ADF

I have gone through the below metioned links, which clearly states the difference between OAF and ADF. After reading these link you will get to know when to use OAF and when to use ADF.

The links are as under:

1) http://blogs.oracle.com/schan/2007/06/28#a1721

2) http://shiv-saroj.blogspot.com/2008/03/oaf-vs-adf-with-respect-to-oracle.html

JDeveloper: Tips and Tricks- Shortcuts

Today I was going through few blogs on JDeveloper. I found some of the links which says about shortcut keys, tips and tricks of using JDeveloper (Shay Shmeltzer's weblog)

1) http://blogs.oracle.com/shay/2007/05/31#a382

2) http://blogs.oracle.com/shay/2006/10/30

3) http://static7.userland.com/oracle/gems/shay/JDeveloperTreasureHunt.pdf

Fusion Applications

Oracle Fusion Application is the next-generation enterprise applications suite, bringing together the best functionality and technology from of all Oracle applications. Oracle Fusion Applications will be released after Release 12. This is being designed to unify best-of-business capabilities from all Oracle Applications in a complete suite delivered on Oracle's open technology.

We have to keep in our mind that Fusion Applications is not the same as Release 12. Release 12 is expected to have its own stream of updates, such as 12.1 and 12.x.

For more on Fusion applications, visit the link:

http://www.oracle.com/applications/fusion.html

Distinguishing Fusion Middleware from Fusion Applications

I was searching for some good articles on Fusion, and I got some useful information on the diffrence between Oracle Fusion Middleware and Fusion Applications.

We have heard many times that Oracle is working on Fusion and they are going to release it soon..To clear the confusion between Fusion Middleware and Fusion Applications,I am going to explain the difference between the two.


Oracle Fusion Middleware:
As we are aware of the three tier architecture,that comprises of Client/UI,Application and database. Fusion Middleware is collection of products provided by Oracle that run on application servers. In other words, Fusion Middleware encompasses everything that doesn't run on a database server.

Fusion Middleware is an umbrella term that includes product suites such as:

- Oracle Application Server
- Oracle Identity Management
- Oracle Development Tools
- SOA Suite
- Business Intelligence Suite
- Business Integration
and many more...


Fusion Applications:
Fusion Applications is the next-generation enterprise application suite. Fusion Applications will be built using the next generation of Fusion Middleware. In other words, the next generation of Fusion Middleware will be the technology stack for Fusion Applications.

ESB : Sending Email notification

Information regarding this can be found under these URLs:

1) Oracle Forum: http://forums.oracle.com/forums/thread.jspa?messageID=1531686

2) http://www.oracle.com/technology/obe/obe_as_10g/wireless/wirelessmessaging/mesg.htm

ESB : ESB Support an Inbound Email Adapter??

Not in the version 10.1.3. Oracle ESB does not currently support the activation agent framework required for this.

Workaround:
A somewhat simple workaround is to write a J2EE servlet that uses JavaMail to poll a mail server and generate a JMS message that Oracle ESB receives using the JMS adapter.

BPEL : Exception ORA-01691

Exception looks like:

<2008-04-15 16:05:59,168>

Error while invoking bean "delivery": Cannot update lob column.
The process domain was unable to update the lob column "7" in the datastore.
The exception reported is: ORA-01691: unable to extend lob segment ORABPEL.SYS_
LOB0000069158C00007$$ by 128 in tablespace ORABPEL

Solution:

For overcoming this exception, you can do either of the things mentioned below:

** Clean up the dehydration store

or

** Increase orabpel tablespace size by running a script similar to the following mentioned below:


alter tablespace orabpel add datafile
'/oracle/product/oradata/orcl/orabpel02.dbf'
size 1024M
autoextend on
next 512M
maxsize 12040M;


Note:- This script is already included in the default IRCA tool of Oracle
BPEL Process Manager for 10.1.3.

Oracle SOA Suite 10.1.3.3: Best Practice guide

Link for Best practice guide on Oracle SOA 10.1.3.3

http://www.oracle.com/technology/tech/soa/index.html

Hope it helps everyone.

BPEL: Exception ORABPEL-05002

This post is in continuation to my post dated 27th september 07 on exception ORABPEL-05002. I have found some real good points to deal with such exceptions.

The exception looks like this,
Failed to handle dispatch message ... exception ORABPEL-05002
Message handle error.
An exception occurred while attempting to process the message "com.collaxa.cube.engine.dispatch.message.instance.PerformMessage"; the exception is: An exception occurred during transaction completion: ; nested exception is: javax.transaction.RollbackException: Timed out.

Solution:
You need to follow the steps mentioned below:

1.) Goto $Oracle_Home\j2ee\home\config\transaction-manager.xml:
change the transaction-timeout parameter, say 'x'

2.) Goto $Oracle_Home\j2ee\home\application-deployments\orabpel\ ejb_ob_engine\orion-ejb-jar.xml:
change the transaction-timeout parameter, say 'y' (i.e. y < x)

3.) Goto BPELConsole:
Change the syncMaxWaitTime in all domains, where you need a bigger timeout

4.) Restart the application server (SOA Server)

While setting the parameter values, be careful because by doing so you will block threads by using long-running synchronous invokes. So as a result, it can affect the performance of BPEL engine.