Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace()
AThe retention period to support flashback
BThe expected length of the longest-running query
CThe number of undo tablespaces in the database
DThe size of the Flash Recovery Area for the database instance
实例初始化块是在该类的构造方法之后执行的。
A、对
B、错
Examine the description of the MARKS table: STD_ID NUMBER(4) STUDENT_NAME VARCHAR2(30) SUBJ1 NUMBER(3) SUBJ2 NUMBER(3) SUBJ1 and SUBJ2 indicate the marks obtained by a student in two subjects. Examine this SELECT statement based on the MARKS table: SELECT subj1+subj2 total_marks, std_id FROM marks WHERE subj1 > AVG(subj1) AND subj2 > AVG(subj2) ORDER BY total_ marks; What is the result of the SELECT statement?()
A、The statement executes successfully and returns the student ID and sum of all marks for each student who obtained more than the average mark in each subject.
B、The statement returns an error at the SELECT clause.
C、The statement returns an error at the WHERE clause.
D、The statement returns an error at the ORDER BY clause.
在Word2003的编辑状态下,单击“粘贴”按钮后,()。
A、将剪贴板中的内容复制到当前插入点处
B、将剪贴板中的内容移动到当前插入点处
C、将文档中被选中的内容复制到剪贴板
D、将文档中被选择的内容复制到当前插入点处
A user’s laptop does not produce sound even though the volume settings are at maximum in theoperating system. Which of the following would MOST likely resolve this issue?()
A、A new sound card
B、A new speaker
C、A BIOS update
D、A hardware volume control
What is the binary equivalent of 242.168.94.124?()
A、11110011 10101000 01011110 01111100
B、11110010 10101010 01011110 01111100
C、11110010 10101000 01011110 01111100
D、11110010 10101000 01010110 01111100