Dear Stefano, sorry for my incomplete info. Phisycal standby and maximum availability mode. thanks. Ale ----- Original Message ----- From: Stefano Cislaghi To: a.lia@xxxxxxxxxx Cc: oracle-l Sent: Thursday, May 27, 2010 9:29 AM Subject: Re: 9i r2 Data Guard - failover procedure Hi Alessandro, may u post some more details? Is something written in your alert log? Are u talking about a phisycal standby? Which performance mode was configured? Thanks Ste -- http://www.stefanocislaghi.eu