On which three can you use Recovery Manager （RMAN） to perform incremental backup？（） data files。 control files。 tablespaces。 password file。 parameter file。 whole database。 flashback log file。 archived log files。 change tracking file。
依树木的主要经济用途分类
You find this query being used in your Oracle 12c database: Which method a used by the optimizer to limit the rows being returned?（） A filter is added to the table query dynamically using ROWNUM to limit the rows to 20 percent of the total rows。 All the rows are returned to the client or middle tier but only the first 20 percent are returned to the screen or the application.。 A view is created during execution and a filter on the view limits the rows to 20 percent of the total rows.。 A TOP-N query is created to limit the rows to 20 percent of the total row。
View the Exhibit to examine the output produced by the following query at three different times sincethe database instance started and has experienced workloads of different capacities： SQL> SELECT substr（component， 0， 10） COMP， current_size CS，user_specified_size USFROM v$memory_dynamic_componentsWHERE current_size!=0； What do you infer from this（） The database instance is running with manual PGA management.。 The database instance is running with manual shared memory management.。 The database instance has the MEMORY_TARGET value set to a nonzero value.。 All sessions are connected to the database instance in dedicated mode， and no RMAN or parallelquery operations have been performed.。
贡献原则
纯比例调节用于工艺系统（）调节。
