This document discusses using a database adapter in Oracle Service Bus (OSB) 12c to poll data from a database table. It describes how to create an OSB project, add a database adapter, configure it to poll for new or changed records from a table, add a pipeline, and write the retrieved data to a file using a file adapter. By wiring the database and file adapters to the pipeline with a routing node, the example polls a source database table and writes the data to a target file.

1. 12/11/2015 OSB 12c ­ Database Polling using DB adapter ­ Oracle Fusion Middleware Blog
http://www.soawork.com/2015/10/osb­12c­database­polling­using­db­adapter.html 1/3
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OSB12c-DatabasePollingusingDBadapter
Oracle introduced couple of new features in 12c version which is recently launched. For OSB, the major shift
that we saw in 12c is that now we can use Jdeveloper to do the development which we use to do through
OEPE (Eclipse). With that change, we can leverage the existing technology adapter in OSB as well which we
use to have in SOA. In OSB 11g version, in case of Database interaction, we use to create DB adapter in
Jdeveloper and later import all required files to OEPE and generate required services from that, but in this
new version­12c as we development in Jdeveloper itself so we need not to follow same steps again, we can
add the DB adapter directly in OSB project and do required operations.
In this post, we show you how to use DB adapter in OSB project. For that we have created a table in
database, we poll the data from that table and write that information to one file.
First of all we need to create a new OSB project, so first create a new project and then in composite.xml file,
right click on proxy service lane, choose “Insert Adapters” and select Database to add DB adapter.
Provide name to adapter and click on next. In next window, choose DB connection (In our case it is local as
we read the data from local table) and click on browse button to select the outbound connection pool
created earlier for DB adapter. This search feature is a new feature that is introduced in 12c, with this feature
we can go to server and select the outbound connection pool; we can even create new connection pool with
this option.
In next window, choose “Poll for new or changed records in table” operation type as we need to poll the new
or updated records then select the table from where we need to poll the record and also select primary key
column. Also choose the column based upon that we need to read the record and select read & unread
column values.
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Once you complete all above steps, then you see DB adapter gets added to the composite but you see one
issue in that adapter as we haven’t added the pipeline yet. To add pipeline, right click on middle pane
choose Insert  Pipeline.
Provide pipeline name and in service type choose “Any SOAP” as we will get the data in soap format from
DB adapter. Ensure that “Expose as a proxy service” checkbox is unchecked as we already have proxy
service created using DB adapter, if you keep that checked then you will notice that it will add one more
proxy in the same composite.
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3. 12/11/2015 OSB 12c ­ Database Polling using DB adapter ­ Oracle Fusion Middleware Blog
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Now you can add wire DB adapter with pipeline. Then add file adapter to write the file and wire it to pipeline.
Now go inside the pipeline and add route node after the start node in message flow. Add routing action
inside route node, in routing select the write file adapter business service .
Add new record to source table and you notice that data successfully picked from that table and written
to target file.
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Unknown October 30, 2015 at 9:21 AM
Very good explanation..
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