Alessandro, good afternoon Send the rac log files and the output of command $ crs_stat -t Cheers Waldirio 2008/7/10, Alessandro Vercelli <alever@xxxxxxxxx>: > > This was a nice explanation, since I'm a newbie in RAC...:))) > > Please, let me ask some help for a problem I'm facing with: one (or more?, > it has been some weeks ago...) RAC node crashed and the other took its VIP; > now I'd like to start the crashed node but it fails, obviously since the VIP > depending nodeapp cannot start... > > I'm waiting my management to activate a Metalink support, but is there > something I can do to in the meanwhile? > > Many thanks, > > Alessandro > > ---------- Initial Header ----------- > > From : oracle-l-bounce@xxxxxxxxxxxxx > To : oracledbaquestions@xxxxxxxxx > Cc : oracle-l@xxxxxxxxxxxxx > Date : Thu, 10 Jul 2008 09:15:41 -0500 > Subject : Re: Oracle RAC and VIPs > > > > > > > > >The basic gist is this: > > The VIP is a cluster resource managed by the clusterware. Depending on > >your OS , you can see it running as a VIP under your public network NIC. > >(ifconfig -a on Linux). What happens in a node failure is that the > >clusterware brings that VIP resource up on another node so that when > clients > >attempt connects to that IP, the 'failure' is detected right away and the > >client can use the next address in the tnsnames.ora entry (or jdbc url, or > >whatever). > > > >Try it out sometime. take a node node, use srvctl to see where the vips > are > >running and look at the ifconfig to see as well. > > > >On Thu, Jul 10, 2008 at 8:30 AM, Dba DBA <oracledbaquestions@xxxxxxxxx> > >wrote: > > > >> I have installed Rac. I know how to create a VIP. I don't understand why > >> this works. I also don't undertsand why TAF works. > >> > >> I am connected to node 1, how am I on the fly connected to node 2 if > node 1 > >> goes down. > >> > >> Again, I know the functionality, I just don't know how it works under > the > >> covers. > >> > >> Can anyone help me out with this? > >> > > > > > > > >-- > >Bradd Piontek > >Twitter: http://www.twitter.com/piontekdd > >Oracle Blog: http://piontekdd.blogspot.com > >Linked In: http://www.linkedin.com/in/piontekdd > >Last.fm: http://www.last.fm/user/piontekdd/ > > > > -- > //www.freelists.org/webpage/oracle-l > > > -- ______________ Atenciosamente Waldirio msn: wmp@xxxxxxxxx Site: www.waldirio.com.br Blog: blog.waldirio.com.br PGP: www.waldirio.com.br/public.html