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| Data Guard
Logical Standby |
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| Database |
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| Ÿ | Multiple
copies of data protects from human |
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| and data
errors, and disasters |
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| Ÿ | Special case of
replication |
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| – | Entire database
(by default) |
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| – | One direction
only |
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| Ÿ | Streams
supports reporting from standby as |
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| updates are
applied |
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| Ÿ | Data Guard
adds higher level interface, |
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| tailored GUIs
and broker |
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