1Z0-032单项选择题每日一练(2018.12.07)

单项选择题
The Log Writer （LGWR） process reads information from the （）and writes it to the online logs.
A.large pool
B.shared pool
C.data buffer cache
D.redo log buffer
E.data dictionary cache
单项选择题
Which background process is responsible for writing the dirty buffers from the write list to the data files during a checkpoint？（）
A.CKPT
B.SMON
C.LGWR
D.DBWn
E.ARCn
单项选择题
Which Oracle background process is responsible for providing information about the instance name associated with the service handlers and services to the listener？（）
A.PMON
B.SMON
C.LGWR
D.CKRT
单项选择题
Examine the RMAN command： SWITCH DATAFILE ’/DISK3/user_data01.dbf’； Which command do you need to issue before you issue the above command， so that RMAN finds the file in the restored location of ’DISK2/user_data01.dbf’？（）
A.RESTORE DATAFILE ’/DISK2/user_data01.dbf’
B.RESTORE DATAFILE ’/DISK3/user_data01.dbf’
C.SET NEWNAME FOR ’/DISK3/user_data01.dbf’ TO’/DISK2/user_data01.dbf’
D.SET NEWNAME FOR ’/DISK2/user_data01.dbf’ TO’/DISK3/user_data01.dbf’
单项选择题
You can control instance recover performance by setting parameters to define targets for（）
A.The size of the redo buffer in SGA.
B.The instance that will perform recovery in Real Application Cluster database.
C.The number of blocks to be read during instance recovery, or the time needed to complete instance recovery.
D.The number of passes through the redo logs made by the recovery process to identify blocks needing recovery.