氧气瓶的颜色标志、瓶体应涂()色。
A. 白
B. 天蓝
C. 灰
D. 黑
E. 褐
Which command is issued on an IBM Tivoli Workload Scheduler master to determine link status and collect into a user created report? ()
A. netstat -rn >
B. conman "sc" >
C. conman "show links" >
D. conman "disp lnk status" >
You are using the control file to maintain information about the database backups that are being performed by Recovery Manager (RMAN).Identify two scenarios is which you must have a recovery catalog. ()(Choose two.)
A. To store the backup information of multiple database
B. To restrict the amount of space that is used by the backups
C. To maintain a backup for a certain time is set by the CONTROL_FILE_RECORD_KEEP_TIME parameter.
D. To list the data files that were in a target database at a given time by using the AT option of REPORT SCHEMA command.
二极管的最高反向电压为击穿电压的()。
A. 1/2
B. 1/3
C. 2/3
D. 1/5