One of our customers noted this the other day - we worked with Oracle, turns out it's bug 9383000 - assuming you're hitting the same issue our customer is. There's a patch for it, and it's fixed in 11.2.0.2. Matt -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Martin Bach Sent: Wednesday, September 08, 2010 3:44 PM To: oracle-l@xxxxxxxxxxxxx Subject: Re: 11gR2 Rac install issue Hi Martin, that's interesting. Normally you have a 1:1 mapping between threads and instances. The mapping of thread to instance usually happens in the initialisation file (spfile), where you find something like instance_n.thread=n i.e. prod1.thread=1 prod2.thread=2 ... prod7.thread=7 In a seven node cluster I wouldn't expect more than 7 public threads, unless there were even more nodes in the cluster which haven't been deconfigured properly. What's the output of this query? select thread#,status,enabled,instance from v$thread; Best regards, Martin On 08/09/2010 18:48, Martin Brown wrote: > Hello, > I am looking around in a new install and I've noticed that the install > seems to have created too many threads and corresponding redo logs. We > use a 7-node cluster and I see 13 public threads. Is this normal? Any > ideas where to look to see what caused it if it isn't? > > TIA -- Martin Bach OCM 10g http://martincarstenbach.wordpress.com http://www.linkedin.com/in/martincarstenbach -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l