I would like to know the implication of not specifying timeout in tx:method. For example, the code below does not have any timeout specified e..g, as timeout="5"

Code:
<tx:method
        	name="find*"
            read-only="true"
            propagation="REQUIRED"
            isolation="READ_COMMITTED"
       	/>
I understand that the timeout on the datasource has a different implication.

My question:
If timeout is not specified on a transaction, will it default to some value? Or, will the timeout value be unbounded and will honor the summation value of all the transactions?