Multiple databases in a cluster is certainly supported, and something lots of companies do. The decision of whether do proceed this way would depend on a number of factors (aggregate CPU requirements per database, interconnect chattiness per DB, maybe switch capabilities/capacities, how easy or hard it may be to provision storage for another set of clusterware, etc ...) - John From: "daniel.hubler@xxxxxxxxxx<mailto:daniel.hubler@xxxxxxxxxx>" <daniel.hubler@xxxxxxxxxx<mailto:daniel.hubler@xxxxxxxxxx>> Reply-To: "daniel.hubler@xxxxxxxxxx<mailto:daniel.hubler@xxxxxxxxxx>" <daniel.hubler@xxxxxxxxxx<mailto:daniel.hubler@xxxxxxxxxx>> Date: Thu, 20 Oct 2011 08:09:29 -0400 To: "oracle-l@xxxxxxxxxxxxx<mailto:oracle-l@xxxxxxxxxxxxx>" <oracle-l@xxxxxxxxxxxxx<mailto:oracle-l@xxxxxxxxxxxxx>> Subject: Multiple databases in a RAC Oracle 11.2.0.2 AIX 6.1 Peoplesoft HCM + ELM We have an existing 11.2.0.2 RAC + GRID cluster built to run Peoplesoft HCM. 2 nodes....active/active. We have been asked to install another Peoplesoft module (ELM). My recommendation was to construct a 2nd cluster to support the 2nd module and its database. So........I would end up with 4 nodes (2 for the HCM cluster and 2 for the ELM cluster) and these clusters would be distinct. I am being asked if it is possible to install the new ELM product on the existing nodes. That is..........a 2-node RAC cluster with 2 distinct databases and 4 instances. This is not making much sense to me.....I am not even sure if this is supported/feasible. Looking for ideas on this. Any input appreciated. Thanks. -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l