Correct, db_name is same on Primary & Standby. Db_unique name is different. I use the same service name on Primary & Standby. When I switchover, stop service on Primary & start service (same name) on Standby. There is a good white paper on service names. -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Jurijs Velikanovs Sent: Wednesday, June 03, 2009 9:39 PM To: mjalsingh@xxxxxxxxx Cc: oracle-l@xxxxxxxxxxxxx Subject: Re: Should Oracle SIDs for the RAC Dataguard match with the Primary Database? Hi Manmohan, If I remember correctly SID must be the same on both side (db_name the same in pfiles). You distinguish between you Prim/Sdby via Service names (db_unique_name and additional services you create according to you requirements and an architecture chosen). Yury On Thu, Jun 4, 2009 at 3:10 AM, Manmohan Jalsingh <mjalsingh@xxxxxxxxx> wrote: > Hi, > > I have been tasked to setup a RAC physical standby database for a RAC > primary database. The standby will be on separate RAC servers. > The environment will be monitored using Grind Control. I have a question > regarding choosing the ORACLE_SIDs for the standby database. > What is the recommendation for choosing them ? Should they be same as > Primary? If I choose the same SIDs, will there be any issue > with monitoring both primary and standby databases in OEM ? > > Thanks in advance > Manmohan > -- Jurijs +371 29268222 (+2 GMT) ============================================ http://otn.oracle.com/ocm/jvelikanovs.html -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l