OSB12c : Exception "The property [PollingInterval] is invalid"

Hi ,
I have DB adapter (Proxy service with JCA protocol) with below JCA properties :

  <property name="PollingInterval" value="15552000"/>

  <property name="MaxRaiseSize" value="1"/>

  <property name="MaxTransactionSize" value="1"/>

  <property name="NumberOfThreads" value="1"/>

  <property name="ReturnSingleResultSet" value="false"/>

  <property name="RowsPerPollingInterval" value="1"/>

And I am getting below exception in osb server logs :
Caused by BINDING.JCA-11603
Invalid Property Exception.
The property [PollingInterval] is invalid.
The property may have been set to an obviously illegal value, i.e. a negative polling interval.
Make sure the property is valid in the interaction (activation) spec by editing its definition in the wsdl. Refer to the Configuring the Database Adap