You are using the flash recovery area (fast recovery area in 11g Release 2) to store backup related files in your database. After regular monitoring of space usage in the Mash recovery area. You realize that the flash recovery area is jetting filled up very fast and it is running out of space. Your database flash recovery area is low on space and you have no more room on disk. Proactively, which two options could you use to make more space available in the flash recovery？（） Change the RMAN archived log deletion policy。 Use the RMAN CROSSCHECK command to reclaim the archived log space。 Change the RMAN retention policy to retain backups for a shorter period of time。 Use OS command to move files from the flash recovery area to some other locatio。
活化的蛋白C（APC）的作用，下列哪项是错误的（） 灭活困子Va和Ⅷa。 激活纤溶系统。 加强AT-Ⅲ-凝血酶复合物结合。 灭活凝血酶和纤溶酶。
The /systest filesystem is associated with the /dev/testlv logical volume on the ’testvg’ volume group. Given this information， which of the following commands can the system administrator use to determine if the /systest filesystem is mirrored？（） df。 lsvg。 lsfs。 lsdev。
1995年1月评估设备一台，该设备于1991年12月购建，账面原值为20万元，1993年进行一次技术改造，改造费用（包括增加设备）2万元。若定基物价指数1991年为1.05，1993年为1.20，1995年为1.32。则该设备的重置成本是（）。 22万元。 27.34万元。 27.43万元。 29.04万元。
Which of the following commands can be used to determine if a disk drive is causing a bottleneck?（） vmstat 。 fileplace 。 iostat 。 lvmstat。
A system administrator has a server experiencing performance problems with logical volumes within a particular volume group. Which command can report I/O statistics for logical partitions with each logical volume within the volume group？（）
