单项选择题
A. Set metric threshold
B. Implement Database Resource Manager
C. Enable resumable timeout for user sessions
D. Add directives to Automatic Database Diagnostic Monitor （ADDM）
多项选择题 Using the LIST command in Recovery Manager (RMAN), which two pieces of information from the RMANrepository can be listed?（）
单项选择题 Examine the following PL/SQL block： DECLARE my_plans pls_integer； BEGIN my_plans ：= DBMS_SPM.LOAD_PLANS_FROM_CURSOR_CACHE （sql_id=> ？9twu5t2dn5xd？； END； Which statement is true about the plan being loaded into the SQL plan baseline by the above command？（）
单项选择题 Examine the following commands and their output: View the exhibit and examine the Flashback Version Query that was executed after the preceding commands. What could be the possible cause for the query not displaying any row?（）