本文讨论了使用Oracle DataGuard进行灾难恢复（DR）的优势，并将其与Streams和GoldenGate进行了比较。作者建议保持当前的复制状态不变，因为它正在运行并且得到了支持。
Tom Said:
As for setting up the DR we are inclined to use DataGuard.
perfect, because data guard does disaster recovery (DR) out of the box and the other two are technologies that could be used to BUILD a DR.
to me, tt is sort of like deciding between:
a) Oracle Human Resources, the application
b) Oracle 11g R2, the database
(a) is like data guard, it is an DR (HR) application - it does DR (HR).
(b) is like streams/golden gate, you could use them to BUILD DR (HR).
As for your current replication, I personally would not be inclined to change it. It is working, it is supported, it is supportable, it will be maintained (although it may not be enhanced going forward into the future as much)
[url]http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:3349335100346299316[/url]
As for setting up the DR we are inclined to use DataGuard.
perfect, because data guard does disaster recovery (DR) out of the box and the other two are technologies that could be used to BUILD a DR.
to me, tt is sort of like deciding between:
a) Oracle Human Resources, the application
b) Oracle 11g R2, the database
(a) is like data guard, it is an DR (HR) application - it does DR (HR).
(b) is like streams/golden gate, you could use them to BUILD DR (HR).
As for your current replication, I personally would not be inclined to change it. It is working, it is supported, it is supportable, it will be maintained (although it may not be enhanced going forward into the future as much)
[url]http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:3349335100346299316[/url]
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