Roll back in Adapter DataBase using Polling | BPEL 11g

Hello Guys,
I'm having a problem with roll back for polling "Update a field in Table(Logical Delete)" in DataBase Adapter BPEL 11g.
My process is:
Does polling in the table from the database changed the value in column from 0 for 1 and then put the message on a JMS queue.
The problem is:
When an exception occurs in the process, for example, exception when posting message in the queue, he does not roll back the database, then the value in the table column is changed to 1 and not 0 as it should.
Adapter Data Base:
Oracle XA
Properties BPEL(Composite):
<binding.jca config="XXXX_db.jca">
    <property name="singleton">true</property>
</binding.jca>
<component name="XXXXX" version="2.0">
    <implementation.bpel src="XXXXX.bpel"/>
    <property name="bpel.config.transaction" type="xs:string" many="false">required</property>
    <property name="bpel.config.oneWayDeliveryPolicy">sync</property>
</component>
Properties JCA of Data Base:
<property name="DescriptorName" value="XXXXXXXXX"/>
      <property name="QueryName" value="XXXXXXSelect"/>
      <property name="MappingsMetaDataURL" value="XXXXXX-or-mappings.xml"/>
      <property name="PollingStrategy" value="LogicalDeletePollingStrategy"/>
      <property name="MarkReadColumn" value="STATUS"/>
      <property name="MarkReadValue" value="1"/>
      <property name="MarkReservedValue" value="2${weblogic.Name}-${IP}"/>
      <property name="MarkUnreadValue" value="0"/>
      <property name="PollingInterval" value="5"/>
      <property name="MaxRaiseSize" value="1"/>
      <property name="MaxTransactionSize" value="10"/>
      <property name="NumberOfThreads" value="1"/>
      <property name="ReturnSingleResultSet" value="false"/>
Its roll back?
Could anyone please help me on this.
Tks,
Azevedo, Artur.

You need to ensure that your process is working in a single transaction.
You are correctly using the XA datasource.
Next you need to ensure that you do not have a dehydration point in the process and if there is a call to another BPEL process they are in a same transaction.

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