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Oracle High Availablity
The aim of
High Availablity
is to prevent or at least reduce unplanned downtime of an Oracle database.
High Availablity is the highest possible level of
fault tolerance
.
Causes of down time
A database might become unavailable because of
Site failures
Computer failures
Storage failures
Data corruption
Human errors
Malice
Fault tolerance
A system is fault tolerant if it continues to operate properly even if one or more of the system's components fail.
In Oracle's ecoystem, one way to achieve fault tolerance is to use
RAC
.
See also
Data Guard
,
Oracle Golden Gate
,
RAC
The
OraOLEDB specific connection string attribute
DBNotifications
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