After performing a clean shut down of the database instance for maintenance, you mount thedatabase and then execute a command to open the database: SQL> ALTER DATABASE OPEN;  Which two statements are true()

A . The online redo log files and online data files are opened. B . All the online data file headers are checked for consistency. C . Instance recovery is performed before opening the database. D . The path and existence of all the log file members are checked

时间:2022-09-23 10:18:17 所属题库:1Z0-052题库

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