Hi, I've tried it once just to see what would happen. It didn't go well and I had to rebuild standby. I had DG in maximum availability, LGWR was crashing during connect to a standby, bunch of ORA-600, etc. I guess you don't want that on production system. I don't remember though was I changing DBID or DBNAME or both but I know for sure I run nid utility. --romas On 10/18/07, Prasad <p4cldba@xxxxxxxxx> wrote: > > All, > > I have a need to change the dbid for a primary db. Will it sync the new > dbid on all the standby databases. > Please let me know > > thanks in advance. > -Prasad > > > >