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【简答题】
组态软件的系统由哪几部分构成? 2、常见的组态方式有几种? 3、组态软件的使用步骤包含哪些?
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反馈参考答案：
举一反三
【单选题】You are maintaining the SALES database of TeleStar Corporation. The online redo log configuration of the database is as follows： One of the redo log members， redo3b， is lost due to disk failure. How...
A.
by performing an incomplete recovery from the last backup
B.
by performing an import operation
C.
by performing a complete database recovery
D.
by dropping the lost member and adding a new redo log member
【单选题】After two years’ study, he now has a __________ better command of English.
A.
very
B.
far
C.
fairly
D.
quite
【单选题】After four years' hard study in Harvard, he has got a ______ knowledge of medicine.
A.
potential
B.
comprehensive
C.
respective
D.
exclusive
【单选题】This is the online redo log files and the control file configurations： Based on these configurations， which statement is true？（）
A.
Both the control files and the online redo log files are configured properly.
B.
The control files are configured properly， but the online redo log files are not configured properly.
C.
The online redo log files are configured properly， but the control files are not configured properly.
D.
Neither the control files nor the online redo log files are configured properly.
【单选题】You are working on the PROD database， which is in NOARCHIVELOG mode. You lost the active online redo log group due to a media failure. How should you recover your database？（）
A.
Restore the database from a whole consistent backup and start the database in MOUNT mode. Then， open the database with the RESETLOGS option after performing a cancel-based recovery.
B.
Restore the database from a whole consistent backup and start the database in MOUNT mode. Then， drop the lost redo log group and open the database with the RESETLOGS option after performing a cancel-based recovery.
C.
Restore the database from a whole consistent backup and start the database in MOUNT mode. Then， clear the lost redo log group and open the database with the RESETLOGS option after performing a cancel-based recovery.
D.
Do nothing. You do not need to recover the database in this case； an instance recovery will be performed by the SMON process on startup.
【单选题】In your database， online redo log files are multiplexed and one of the members in a group is lost due to media failure？ How would you recover the lost redo log member？（）
A.
import the database from the last export
B.
restore all the members in the group from the last backup
C.
drop the lost member from the database and then add a new member to the group
D.
restore all the database files from the backup and then perform a complete recovery
E.
restore all the database files from the backup and then perform an incomplete recovery
【单选题】Redo log files are multiplexed in your database. The disk in which you have one of the redo log members is highly fragmented. In the process of defragmentation you lose the redo log member， which is n...
A.
SMON would automatically restore the lost file.
B.
You would need to restore the whole database from the last backup.
C.
You would need to restore the file from the last full database backup.
D.
You would need to use flashback technology to restore the lost redo log member.
E.
You would need to use Recovery Manager （RMAN） to restore the lost redo log member.
F.
You would need to restore the missing log file by copying one of the remaining files from the same group.
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