单项选择题
A.The backup will consist of used data blocks only.
B.The database must be shut down to accomplish the backup.
C.The backup can be accomplished without shutting down the database.
D.The backup will contain all database files that have never been backed up
单项选择题 View the Exhibit and examine the privileges granted to the MGR_ROLE role. The user SKD has been grantedthe CONNECT and RESOURCE roles only. The database administrator （DBA） grants MGR_ROLE to the userSKD by executing the command： SQL> GRANT MGR_ROLE TO SKD WITH ADMIN OPTION； Which statement is true about the user SKD afterhe/she is granted this role（）
单项选择题 You executed the command to create a password file in the database server： $ orapwd file=orapworcl entries=5ignorecase=N Which statement describes the purpose of the above password file（）
单项选择题 You used the IMMEDIATE option to shut down your database instance. Consider the steps that may occurwhen 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（）
