You executed the following command： RMAN> RECOVER COPY OF DATAFILE ’/u01/app/oracle/oradata/orcl/users01.dbf’； Which statement regarding the above command is correct？（） [" The ’\/u01\/app\/oracle\/oradata\/orcl\/users01.dbf’ data file is recovered from the image copy."," The ’\/u01\/app\/oracle\/oradata\/orcl\/users01.dbf’ data file is recovered from the last incremental backup."," Image copies of the ’\/u01\/app\/oracle\/oradata\/orcl\/users01.dbf’ data file are updated with all changes up to incremental backup SCN."," Image copies of the ’\/u01\/app\/oracle\/oradata\/orcl\/users01.dbf’ data file are recovered using the above command if data file recovery fails."]
对于立式往复式压缩机，滑道在检修时发现“拉毛”现象，只将有“拉毛”侧的滑道进行修 复，另一侧不必修复。
Which feature/offering of Oracle Application Grid makes it particularly easy to significantly increase the performance of Web-based applications with no code change ？ （） [" ActiveCache"," Store-and-Forward"," Messaging Bridge"," MetaCache"]
公告部门负责建立公告平台信息系统，对记录信息数据进行（），并保证公告的不良行为记录与行政处理决定的相关内容一致。 ["追加、修改、更新","删除、修改、更新","追加、修改、整理","删除、修改、整理"]
Your database is functional with a peak load for the last one hour. You want to preserve theperformance statistics collected during this period to be used for comparison when you analyze theperformance of the database in the future. What action would you take to achieve this task（） ["Insert finding directives for ADDM tasks in the future.","Create a baseline on a pair of snapshots spanning the peak-load period.","Decrease the snapshot interval in the AWR to collect more snapshots during the peak-load period.","Set the snapshot retention period in the Automatic Workload Repository （AWR） to zero to avoid automatic purging of snapshots."]
鱼类与其它动物的主要区别有哪些？
