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单项选择题 You used the IMMEDIATE option to shut down your database instance. Consider the steps that  mayoccur when a database instance is started and database is opened:  1:SGA is allocated.  2:Control file is read.  3:Redo log files are opened.  4:Instance recovery is started.  5:Background processes are started.  6:Data file headers are checked for consistency.  7:Server parameter file or the initialization parameter file is read.  Which option has the correct order in which these steps occur()

A、7,1,5,2,3,6,4

B、1,5,7,2,3,6;step 4 is not required

C、7,1,5,2,3,6;step 4 is not required

D、1,2,3,5,6,4;step 7 is not required

  • C
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