[单选]

The warning level threshold value for a tablespace， DATA1， is set to 60% and the critical level threshold value is set to 80%. The tablespace， DATA1， is infrequently used and is not a part of the production environment. You issued the following command：       
SQL> EXECUTE  
DBMS_SERVER_ALERT.SET_THRESHOLD       
（dbms_server_alert.tablespace_pct_full，       
dbms_server_alert.operator_ge，80，       
dbms_server_alert.operator_ge，90，       
1，1，NULL，  
dbms_server_alert.object_type_tablespace，’DATA’）；  
What will be the result of the command？（）  

A customer is considering iDataPlex and several competitive solutions. Which of the following favor iDataPlex?（） Lowest cost of acquisition 。 Useable density 。 Flexible configurations ready for integration and testing at the customers data center。 Standard rack mounting。 资产 Automatic data conversion will occur if which of the following happens?（） The client and server have different NLS_LANGUAGE settings.。 The client and server character sets are not the same, and the database character set is not a strict superset of the client character set.。 The client and server are in different time zones.。 The client requests automatic data conversion.。 The AUTO_CONVERT initialization parameter is set to TRUE.。 A customer requests a solution that will enhance the availability of their servers and ensure that the time needed to recover from an Operating System fault is at a minimum.  What solution do you recommend？ （） Use RAID protection and add more memory。 Install Operating System in RAID 0 （Parity） Disk Configuration。 Install Operating System in RAID 5 Disk Configuration。 Use RAID protection and ensure systems are backed-up daily。 楞次定律是用来确定绕组中感应电动势的（）的，电磁感应定律是用来计算绕组中所产生感应电动势的数值大小。

The warning level threshold value for a tablespace， DATA1， is set to 60% and the critical level threshold value is set to 80%. The tablespace， DATA1， is infrequently used and is not a part of the production environment. You issued the following command：       
SQL> EXECUTE  
DBMS_SERVER_ALERT.SET_THRESHOLD       
（dbms_server_alert.tablespace_pct_full，       
dbms_server_alert.operator_ge，80，       
dbms_server_alert.operator_ge，90，       
1，1，NULL，  
dbms_server_alert.object_type_tablespace，’DATA’）；  
What will be the result of the command？（）