I opened a TAR a month ago regarding this question (4271955.994). Oracle = support determined that at this time, rolling patch upgrade for RAC is = not possible. At some point, both/all sides have to be down. Check out document 244241.1 and 282108.1 (Q 31) for more information on = that. -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Alex Gorbachev Sent: Tuesday, April 19, 2005 3:53 PM To: mhthomas Cc: haroon@xxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx Subject: Re: Q: RAC and non-RAC databases on same servers If the patch is rolling patch it can be applied for each instance one by one so RAC database has basically no downtime. If patch is not rolling (or the whole patch set with dictionary upgrade) then it should be applied on all oracle homes of all instances at the same time. We don't have time for it during our outage window so we install it to another Oracle home and then only switch oracle home and upgrade catalog. This was the answer on the first question as I undertsood it. The second question I don't understand at all. 2005/4/19, mhthomas <qnxodba@xxxxxxxxx>: > Hi, >=3D20 > On 4/18/05, Alex Gorbachev <gorbyx@xxxxxxxxx> wrote: > > We are running RAC and non-RAC databases from the same Oracle home. = We > > are on HP ServiceGuard as well. > > You can also have separate oracle homes relinked with/without RAC = optio=3D n. > > >=3D20 > When you do a patch do you patch everything at the same time, e.g. all > RAC nodes and all their shared homes? Did patching influence your > decision for same Oracle home? >=3D20 > Regards, >=3D20 > Mike Thomas >=3D20 --=3D20 Best regards, Alex Gorbachev -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l