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Oracle Real Application Clusters (RAC) is an option for Oracle Databases. It is a cluster database with a shared cache architecture that increases scalability and availability. Oracle RAC support is included in the Oracle Database Standard Edition and is an extra cost option for Enterprise Edition.

3
votes
We just did the same thing. install software in new machines and configure different cluster copy tnsnames.ora, orapwSID files to new machines and prepare pfile you may need to add SID to /etc/orata …
answered Jan 9 '14 by Mindaugas Riauba
2
votes
30min for 1TB is quite normal. That all writing stops is also normal if your tablespace completely run out of space. When writes has nowhere to go they have to wait for the RESIZE operation to complet …
answered Aug 2 '13 by Mindaugas Riauba
1
vote
Investigate v$session view about what particular event is causing those cluster waits. E.g.: select s.event, s.* from v$session s order by s.event; event column will get you offending event event n …
answered Jul 12 '13 by Mindaugas Riauba