Blog Posts Process Management Service Oriented Architecture (SOA)

Database Xpath-extension Functions in SOA 12 by Pranav Davar

Blog: PaaS Community


In SOA, we can connect with databases using a database jca adapter and configuring the data source and connection factory in the WebLogic server. Sometimes, we may want to query the database directly within the BPEL component or XSLT without configuring a database jca adapter. For such use cases, we can take leverage of database functions that can be used within BPEL Assign Activity or XSLT transformations.

We have 3 different database functions available, that can be used in different use cases.

  1. oraeext:sequence-next-val()
  2. oraext:lookup-table()
  3. oraext:query-database()

1. oraext:sequence-next-val()


oraext:sequence-next-val(sequence as string, dataSource as string)
sequence: Specify the sequence available in the database for which the next value needs to be extracted.

dataSource: Specify the Data source JNDI name as configured in WebLogic server or JDBC string in the format jdbc:oracle:thin:username/password@host:port:sid

Note: Only oracle thin driver is supported if used as JDBC string.

This function is used when we want to fetch the next value of defined sequence in the database. It can be used in cases where we want each request to adhere with a particular sequence id which can be used to identify each unique record where using a db adapter might create overhead and extra transformation. This function is basically an alternative to the below SQL statement. Read the complete article here.

PaaS Partner Community

For regular information on Oracle PaaS become a member in the PaaS (Integration & Process) Partner Community please register here.

clip_image003 Blog clip_image005 Twitter clip_image004 LinkedIn image[7][2][2][2] Facebook clip_image002[8][4][2][2][2] Wiki

Technorati Tags: SOA Community,Oracle SOA,Oracle BPM,OPN,Jürgen Kress

Leave a Comment

Get the BPI Web Feed

Using the HTML code below, you can display this Business Process Incubator page content with the current filter and sorting inside your web site for FREE.

Copy/Paste this code in your website html code:

<iframe src="" frameborder="0" scrolling="auto" width="100%" height="700">

Customizing your BPI Web Feed

You can click on the Get the BPI Web Feed link on any of our page to create the best possible feed for your site. Here are a few tips to customize your BPI Web Feed.

Customizing the Content Filter
On any page, you can add filter criteria using the MORE FILTERS interface:

Customizing the Content Filter

Customizing the Content Sorting
Clicking on the sorting options will also change the way your BPI Web Feed will be ordered on your site:

Get the BPI Web Feed

Some integration examples