Can I create streams on data guard?

I just want to know can streams source database is physical standby or logical standby?
11g r2
thanks
Edited by: user482784 on 2011-2-26 下午6:25

This is not just mac-related.  This is simple data-separation.  Losing one disk that has all of your partitions means losing all of the data.
Some people keep TimeMachine (data backup) information on the same disk as their system disk.  But when they lose their disk, their critical backup is gone too.
There is another reaosn you may want a separate external drive ... if you ever want to use BootCamp to load Windows on your system, you must start with a 1-partition system, and that disk must be the "internal drive" (external drives cannot hold BootCamp partitions).
So there are many reasons for keeing your system -partition on the internal disk and use external drives to separate and keep your daa safe.

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