1Z0-032单项选择题每日一练(2019.01.07)

单项选择题
If you CROSSCHECK the backup piece that was previously marked as EXPIRED but is now available， what would the status of this backup piece be in the RMAN repository？（）
A.EXPIRED
B.AVAILABLE
C.UNAVAILABLE
D.ACCESSIBLE
单项选择题
You just completed a manual open database backup. However there seems to be a problem with the database performance. You discover that the database is generating many log switches and the LGWR is consuming lots of CPU time. You have an idea of what the problem is and you begin looking at the information in V$BACKUP and in V$DATAFILE_HEADER.What do you suspect is the problem？（）
A.A
B.B
C.C
D.D
单项选择题
You want to create a copy of the DEPARTMENTS table. When that is complete， you want to truncate the new DEPARTMENTS table， then restore the data with a direct-load insert from the old DEPARTMENTS table. Which CREATE statement should you use？（）
A.A
B.B
C.C
D.D
单项选择题
Examine the following parameter settings from an initialization （init.ora） file： DB_CREATE_FILE_DEST =’/u01/oradata/’ DB_CREATE_ONLINE_LOG_DEST_1 =’/u02/oradata/’ DB_CREATE_ONLINE_LOG_DEST_2 =’/u03/oradata/’ If you create an Oracle Managed Files （OMF） database using these settings， what is the result？（）
A.A
B.B
C.C
D.D
单项选择题
Examine this syntax which allocates channels during a parallel image copy： RMAN> CONFIGURE DEVICE TYPE disk parallelism 4： 2> COPY 3> datafile 1 TO ‘/BACKUP/datafile1.dbf’， 4> datafile 2 TO ‘/BACKUP/datafile2.dbf’， 5> datafile 3 TO ‘/BACKUP/datafile3.dbf； RMAN>COPY 2> datafile 4 TO ‘/BACKUP/datafile4.dbf’； How many channels are used？（）
A.0
B.1
C.3
D.4