The BACKUP_TAPE_IO_SLAVES parameter is set to FALSE for the database instance. Which statement is true while performing a tape backup in an RMAN session?() The tape I/O performed is asynchronous。 The tape buffer is allocated from the System Global Area (SGA)。 The tape buffer is allocated from the Program Global Area (PGA)。 Oracle I/O uses an interrupt mechanism to determine when each I/O complete。
市场变化趋势主要是()共同作用的结果。 趋势因素。 周期因素。 季节因素。 不确定因素。 复合因素。
Which of the following tools should be used to report current network status and is often used to check the reliability of a network?() netpmon。 netstat。 nfsstat。 vmstat。
全球电子商务立法中争议较大的问题有() 对电子通信记录的法律效力的确认问题。 电子签名技术方案的选择问题。 电子合同的法律效力问题。 电子认证机构的管理与选任问题。
During a system boot, an error message appears concerning a paging space, paging00. The paging space was located on hdisk2, but the disk was removed from the system without proper software procedures. Which of the following commands should be used as the first step in the process of recovery?() mkps paging00 hdisk0。 chpv -v r hdisk2。 chps -a n paging00。 reducevg rootvg hdisk2。
用最小平方法拟合直线趋势方程ŷt=a+bt,若b为负数,则该现象趋势为()。