Thanks Neil, Jason and Vit for your help! Re-creating the standby controlfile resolved the issue. On Tue, Dec 22, 2009 at 1:26 PM, Li Li <litanli@xxxxxxxxx> wrote: > Greetings List, > > We have a physical standby running on a 4-node RAC. last night the > apply instance (instance 1) had ora-04031 error and data guard broker > changed the apply instance to be instance 2. Now apply instance > (instance 2) shows "WAIT_FOR_GAP" for a log sequence 5xxx, which is a > very old log, and has been applied a long time ago. Has any one seen > this before? How do I trick the apply instance to skip the logs that > have been applied already and start applying the logs that haven't > been received but haven't applied. > > Oracle version 10.2.0.3 on RHEL AS 4.7 > > Thanks and hope you all a merry christmas and happy new year! > -Li > -- //www.freelists.org/webpage/oracle-l