You have created a locally managed tablespace by issuing the following command:        CREATE TABLESPACE data1   DATAFILE ’data1_file1.dbf’ SIZE 10M AUTOEXTEND ON MAXSIZE        UNLIMITED;   For the DATA1 tablespace, you have set the warning level alert limit to 70 percent.  In which situation will a warning level alert be generated?()  
A: when 700 KB is used
B: when 700 KB is left as free space
C: when 7MB is used
D: when 7MB is left as free space
E: no alert will be generated because an autoextensible datafile is included in the tablespace
出自:Oracle认证