[多选]

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？（）

美国社会学家霍伊特提出了城市地域结构的（）。 同心圆模型。 扇形模型。 多核心模型。 城市域模型。 Which of the following commands should be used to open a tty port configured in the /etc/uucp/Devices file as： Direct tty2 - 9600 direct in debug mode， ignoring modem control signal data carrier detect （DCD）？（） cu -l tty2。 cu -dml tty2。 cu -dht Direct。 cu -s9600 -l tty2。 What is the proper way to start a system dump on the default primary dump device? （）  sysdumpdev -p 。  sysdumpdev -s 。  sysdumpstart -p 。  sysdumpstart -。 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。 下面哪一项不是场独立―场依存的认知方式的特点（） 普遍性。 稳定性。 两极性。 可控性。

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？（）