You receive the following error: ORA-19804: cannot reclaim nnnnn bytes disk space from mmmmm limit Identify the reason for receiving the above error message?()
A、 The sort area is very small.
B、 There is no more space in the Undo tablespace.
C、 The flash recovery area is full.
D、 The online redo log file is full.
The database instance has the following parameter setting: OS_AUTHENT_PREFIX = OPS$ OS_ROLES = FALSE REMOTE_OS_AUTHENT = FALSE REMOTE_OS_ROLES = FALSE TIMED_OS_STATISTICS = 0 You have a local operating system user SKD.You create a database user OPS$SKD, and then assign external authentication. The user OPS$SKD has theCREATE SESSION privilege. What would you achieve by the above process()
A、The database user OPS$SKD will be able to administer the database.
B、The authentication detail for the database user OPS$SKD is recorded in the password file.
C、The local operating system user SKD will be able to access the database instance without specifying theusername and password.
D、The database user OPS$SKD has to login with the password of the local operating system user SKD toaccess the database instance.
You are performing an incomplete recovery because some important tables have been dropped and purged from the Recycle Bin. Which clause can you NOT use to perform the incomplete recovery by using the RMAN utility?()
A、 UNTIL CANCEL
B、 UNTIL SCN
C、 UNTIL SEQUENCE
D、 UNTIL TIME
下面不属于软件开发阶段任务的是( )。
A、测试
B、可行性研究
C、设计
D、实现
关于因特网,下列哪些说法是正确的?()
A、因特网是一个异种网互连,覆盖全球的计算机网络系统
B、因特网采用客户机---服务器模式
C、能提供WWW、E-mail./FTP等服务
D、接入因特网的常用方法有电话接入和局域网入网两种方式
项目管理中资源计划的目的是()
A、估计项目所需资源成本
B、决定可能得到的资源
C、提供所需资源的组织方式
D、确定所需资源种类、数量、时间