多项选择题 WhichtwostatementsaretrueregardinganAutomaticStorageManagement（ASM）instance？（）

单项选择题 You discover that your Recycle Bin contains two tables with the same name, MY_TABLE. You also have a table named MY_TABLE in your schema. You execute the following statement: FLASHBACK TABLE my_table TO BEFORE DROP RENAME TO my_table2; What will be the result of executing this statement?（）

单项选择题 You want to use RMAN to create compressed backups.Which statement is true about the compression algorithms that RMAN can use?（）