A customer has determined they want to install an IBM x445 system in their company. They will be running a large database on the system. In order to determine how many CPUs will be needed to attain the optimum cost-effective solution， which TWO of the following questions should be asked？（） How large is the database？。 What is the expected user workload？。 How is the database software licensed？。 What type of user interface will be used？。 How much data cache will the database be allocated？。
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? （） 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.。 The statement returns an error at the SELECT clause.。 The statement returns an error at the WHERE clause.。 The statement returns an error at the ORDER BY clause.。
液化石油气钢瓶护罩与上封头采用（）连接，即不可拆卸连接。 螺纹连接；。 铆接；。 焊接；。 插接。
The data file belonging to the SYSTEM tablespace is corrupted and no backup of the file is available. How do you recover the data file？（） The data file cannot be recovered.。 The date file can be restored from the SYSTEM auto backup.。 Take thetablespaceoffline，drop，kand re-create it.。 Recovery Manager （RMAN） is used to recover the data file.。 The ALTER DATABSE CREATE DATAFILE..commandis used to recover the data file.。
根据《水电建设工程安全鉴定规定》规定，鉴定专家组在形成工程安全鉴定报告的过程中，应充分与建设各方交换意见。项目法人应组织建设各方认真做好配合鉴定单位和鉴定专家组进行的鉴定工作，包括（）。 A.准确、及时提供鉴定工作所需的各种工程资料 。 B.组织相对固定的专业人员和工作人员，向专家组介绍有关工程情况 。 C.作出工程安全评价，提出安全鉴定报告 。 D.检查洪水设计标准、工程泄洪设施的泄洪能力 。 E.为专家组在现场工作提供必要的工作条件。
The online redo log group configuration for your database is as follows： What will happen if the online redo log file ’ora02/oradata/redo02b.log’is corrupted while working on the database？（）
