单项选择题

What view might you use to try to determine how long a particular backup will take？（）

A. V$SESSION_EVENT
B. V$SESSION
C. V$WAITS
D. V$WAITSTAT
E. V$SESSION_LONGOPS

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单项选择题

In what view are you likely to see the following output？（）
SID SERIAL# EVENT SECONDS_IN_WAIT
121 269 RMAN backup & recovery I/O 2
129 415 SQL*Net message from client 63 130 270 SQL*Net message from client

A. V$SESSION_EVENT
B. V$SESSION
C. V$WAITS
D. V$WAITSTAT
E. V$SYSSTAT

单项选择题

What is the impact of the following backup if it exceeds the duration allowance？（）
Backup as compressed backupset duration 2：00 partial minimize load database ；

A. The entire backup will fail.It will not be usable for recovery.
B. The entire backup will failbut any datafile successfully backed up will be usable for recovery.
C. If this backup fails，subsequent backups will prioritize datafiles not backed up.
D. If this backup fails，an error will be raised and any other commands will not be executed.
E. If this backup fails，no error will be raised and any other commands will be executed.

单项选择题

How long will this backup be allowed to run？（）
Backup as compressed backupset duration 2：00 minimize load database

A. 2 minutes
B. 2 hours
C. 2 days
D. The command will generate an error.
E. This backup is not constrained by any time limitation.