updating the server cache in toplink

Question

hi all, i am facing one problem. I need to update the server session's cache when we say writeChanges in unit of work. As in my application i do not say commit on unit of work instead i say commit on connection which indirectly commits the transaction but does not update the cache. so can any one tell me how to do that in any of the cases that whether i can update the server cache on writeChanges or when i say commit on connection.??

please help me..