There isn't a huge amount on this subject. I have seen PeopleSoft HR (with T&L and Payroll), Financials and CRM on 2-node RAC on a couple of sites. (I have never seen more than 2-node, but there is no reason for it not to work). This is a wild generalisation, but I would say that Peoplesoft appears to work as well on RAC as it does on single instance. All the PeopleSoft recommendations for Oracle (in the platform certification report) apply to single instance and RAC. I have seen a symetric configurations where everything is distributed across both nodes. I have seen an asymetric configurations with on-line on one node and batch on another (the hardware under each instance is different). I had some misgivings regarding this when it was proposed, but so far it has worked well. Different TNS services were defined in the tnsnames.ora that preferred one node over the other, or load balanced across both. In PeopleSoft the PeopleSoft database name must match the TNS service name. So, for each additional TNS sevice, an entry has to be added to the table in PeopleSoft that maps the database name to schema where all the objects are located. We had three services, we needed three rows in this table. Depending on how you want an Application Server or Process Scheduler to connect to the RAC, you configure it to connect to the PeopleSoft database where the TNS service of the same name has the desired characteristic. I am working with another system on single instance that has particularly high on-line and day-time batch activity. Sufficient to cause database locking problems in the process scheduler distribution server. I haven't seen a system with this level of intensity on RAC. regards _________________________ David Kurtz Go-Faster Consultancy Ltd. tel: +44 (0)7771 760660 fax: +44 (0)7092 348865 <mailto:david.kurtz@xxxxxxxxxxxxxxx> mailto:david.kurtz@xxxxxxxxxxxxxxx web: www.go-faster.co.uk Book: PeopleSoft for the Oracle DBA: <http://www.psftdba.com/> http://www.psftdba.com DBA Blogs: PeopleSoft: <http://blog.psftdba.com/> http://blog.psftdba.com, Oracle: <http://blog.go-faster.co.uk/> http://blog.go-faster.co.uk PeopleSoft DBA Forum: <http://groups.yahoo.com/group/psftdba> http://groups.yahoo.com/group/psftdba _____ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Andrew Kerber Sent: Thursday, September 16, 2010 7:33 PM To: ORACLE-L Subject: Peoplesoft on RAC Importance: High Well, I searched the metalink site, and didnt find anything useful. Can anyone point me to some useful documentation on Peoplesoft on Oracle RAC, on the database side. I found several documents on the web server side, but didnt find much for the DBA, Oracle 10.2.0.4 and above. In particular, I am looking for best practices, init settings, etc. -- Andrew W. Kerber 'If at first you dont succeed, dont take up skydiving.'