title: relying on timestamp rather than sequence in Oracle RAC
body: <p><a href="https://stackoverflow.com/questions/4866959/oracle-rac-and-sequences">Oracle RAC and sequences</a></p>
  
  <p>I have read this answer. I have one more question. </p>
  
  <p><em>When one node asks for timestamp( say in GMT, and the nodes are in different timezones), does this node need to ask node-master for timestamp everytime it needs to save?</em>
  I am wondering if it does ask the master-node, then there is no advantage of using sequence vs timestamp. </p>