OSB 11g + DB adapter - best practices

Question

Hello All,
I am creating some data services using OSB 11g+Db adapter to perform operations (Sel,Ins,Upd) from two databases. Most of them are simple queries, however some include complex db operations
1. If I have two separate datasources for databases, are there any option to handle global xa tansaction using OSB service.
2. Couple of interfaces consist large payload (Say xml with 5000 elements -- approx 500kb - 1MB) to be inserted to db. Are there performance tuning tips for these kind of operations.
Please let me know your thoughts on this - any docs/blog also will help.
Thanks,
ARPL

Answer 1

The below URL will help you to have DBAdapter in OSB.
Guido Schmutz, has provided step-by-step tutorial and video tutorial as well.
http://guidoschmutz.wordpress.com/2010/08/08/oracle-service-bus-11g-and-db-adapter-a-different-more-integrated-approach/
http://guidoschmutz.wordpress.com/2010/08/08/oracle-service-bus-11g-and-db-adapter-a-more-integrated-approach-the-video-tutorial/
If you are going to use Sel, Update and Insert to a single table or multiple tables then i would say, try to keep it with in single adapter wsdl with multiple operations, this will help you to have good performance.
Otherwise you can keep all those in a procedure and call the required function but in that case you have to have 3 DBAdapters.
To answer your question,
1. Enable both the datasources as XA enabled. As per 11g, you will be building in Jdeveloper (DBAdapter) and use it inside OSB.
2. You have to control that on multiple levels like jvm memory allocation, datasource threads allocation, timeout seeting on datasource and releasing dead connections.
Thanks,
Vijay