The EMP table has these columns: ENAME VARCHAR2(35) SALARY NUMBER(8,2) HIRE_DATE DATE Management wants a list of names of employees who have been with the company for more than five years. Which SQL statement displays the required results? （） SELECT ENAME FROM EMP WHERE SYSDATE-HIRE_DATE >5;。 SELECT ENAME FROM EMP WHERE HIRE_DATE-SYSDATE >5;。 SELECT ENAME FROM EMP WHERE (SYSDATE_HIRE_DATE)/365 >5;。 SELECT ENAME FROM EMP WHERE (SYSDATE_HIRE_DATE)*/365 >5。
绝缘材料的机械强度，一般随温度，湿度升高而（）。 升高。 不变。 降低。
You are working on a new Oracle Database 11g server， where only the software is installed and no database iscreated. You plan to create a database on this server using the Database Configuration Assistant （DBCA）.Some of the requirements set for your database creation task are： 1.Configure the database to operate in shared server mode. 2.Disable automatic maintenance tasks such as optimizer statistics collection. 3.Configure a naming method to help the remote user connect to the database instance. 4.Use Automatic Storage Management （ASM） for storing the database files. 5.Configure daily database backup to flash recovery area. 6.Configure Enterprise Manager Database Control to manage the database. Which of these requirements can be met while creating the database（） 4 and 6。 2，3，4，and 6。 1，2，4，5，and 6。 1，2，3，4，5，and 6。
Which command can be used to show volume group information about filesystems and OS levels for a specified mksysb called server1.mksysb？（） lsmksysb -lf server1.mksysb。 restore -mrT server1.mksysb。 listbackup -fT server1.mksysb。 listvgbackup -l server1.mksy。
采用电力引爆方法，装炮时距工作面（）以内，应断开电流。 A.20米 。 B.30米 。 C.40米 。 D.50米。
Which two statements about workload capture and replay operations are true?（）
