DB polling in cluster environment?

Hi all,
I have a DB adapter polling a table in a 2 node clustered environment. For each row it polls it is creating 2 instances on two servers and this is is causing issues when i call 3 rd party web service with identical data....i tried checking distributed polling in adapter config and also 'singleton' property in composite.xml, but still it creates duplicate instances some times and not all the times....Could some one suggest some thing for resolving this...
Thanks

parameter looks fine. I too faced similar problem with DBAdapter in cluster. Later I realized that the above parameters were set in the wrong place. I think this might be an issue with the relationship you create between tables. Hence you need to identify the right place to set the above parameters. Look up my toplink file
<reference-class>XXXXXXX</reference-class>
                  <refresh>false</refresh>
                  <remote-refresh>false</remote-refresh>
                  <cache-usage>primary-key</cache-usage>
                  <lock-mode>none</lock-mode>
                  <container xsi:type="list-container-policy">
                     <collection-type>java.util.Vector</collection-type>
                  </container>
               </query>
               <query name="XXXXXX" xsi:type="read-all-query">
                  <reference-class>XXXXXX</reference-class>
                  <refresh>false</refresh>
                  <remote-refresh>false</remote-refresh>
                  <lock-mode>none</lock-mode>
                  <container xsi:type="list-container-policy">
                     <collection-type>java.util.Vector</collection-type>
                  </container>
               </query>
In the above sample, you could notice the remote-refresh parameters are present twice. When I enabled 'Distributed Polling' option, the parameters were set in the italics instead of in the text which is bold. After I modified the toplink file, it works fine as expected. Hopes it clarifies you.
rgds
sen

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