June 2013
Beginner
404 pages
9h 40m
English
Content preview from Oracle Data Guard 11gR2 Administration : Beginner's GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Failover
Failover is initiated when a serious problem exists on the primary database, making it inaccessible. This problem generally arises from hardware or software errors on the server or storage layer; also, a disaster may cause complete or partial loss of services. In such cases, we can convert a standby database role to primary by performing failover and continue providing it with production database service. Performing a Data Guard failover operation for production purposes is a serious consideration and needs a lot of caution. The following considerations are important in this context:
- Failover decision must be taken with regard to the service Recovery Time Objective (RTO) value.
- The standby database hardware must be powerful enough to sustain ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.