2009年
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部分联机备份产生redo多的原因！
doc上解释的格外清楚，还是看doc吧[@more@]Detection of Fractured Blocks During Open BackupsOne danger in making online backups is the possibility of inconsistent data within a block. For example, assume that you are backing up block 100 in datafile users.dbf. Also, assume that the copy utility reads the entire block while DBWR is in the middle of updating the block. In this case, the copy utility may read the old data in the top half of the block and the new data in the bottom top half of the bloc
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CX0的全称！
呵呵，X=E，0，T，I[@more@]CEO(Chief executive officer)首席执行官 类似总经理、总裁，是企业的法人代表。COO(Chief operating officer)首席运营官 类似常务总经理CTO(Chief technology officer)首席技术官 类似总工程师CIO(Chief information officer)首席信息官 主管企业信息的收集和发布
