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Primary vs Secondary databases

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The primary database fails and you activate the standby database. What action should you take now that the primary database has been replaced with the stand-by database?

(a) Create a new standby database.

(b) Apply all archive log files to the standby database so that it will be current

(c) Recover the primary database and do not use the standby database.

(d) Recover the primary database to the point of failure, restart, and deactivate the standby database.
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