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In what state are the datafiles of a tablespace after a TSPITR has been successfully completed?
A. The datafiles have an ONLINE status.
B. The datafiles have an OFFLINE status.
C. The datafiles have an ONLINE status and are in hot backup mode prepared for an online backup.
D. The datafiles have an OFFLINE status and are in hot backup mode for an online backup.
E. The datafiles are in STANDBY mode.

　　After a TSPITR each datafiles associated with the TSPITR will be offline.Oracle recommends you back up the datafile before bringing it online.

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原文：http://www.cnblogs.com/Babylon/p/7826233.html