<div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> <b style="background-color:inherit;">1.v$flashback_database_log</b> </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> select from v$flashback_database_log; </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> <br style="background-color:inherit;" /> </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> OLDEST_FLASHBACK_SCN OLDEST_FLASHBACK_TI RETENTION_TARGET FLASHBACK_SIZE ESTIMATED_FLASHBACK_SIZE </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> -------------------- ------------------- ---------------- -------------- ------------------------ </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1148024 2008-06-19 10:36:06 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;360 &nbsp; &nbsp; &nbsp; 44138496 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 47831040 </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> <br style="background-color:inherit;" /> </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> OLDEST_FLASHBACK_SCN &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;保留的最低系统改变号 </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> LDEST_FLASHBACK_TIME &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;最低系统改变号的时间 </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> RETENTION_TARGET &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;闪回日志保留时间（单位：时间） </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> FLASHBACK_SIZE &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;当前闪回日志的大小（单位：字节） </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> ESTIMATED_FLASHBACK_SIZE &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;预估满足保留时间所需要的空间大小（单位：字节） </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> V$FLASHBACK_DATABASE_STAT </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> <br style="background-color:inherit;" /> </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> <b style="background-color:inherit;">2.v$flashback_database_stat</b> </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> select begin_time,end_time,flashback_data,db_data,redo_data,estimated_flashback_size </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> from v$flashback_database_stat; </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> <br style="background-color:inherit;" /> </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> BEGIN_TIME &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;END_TIME &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;FLASHBACK_DATA &nbsp; &nbsp;DB_DATA &nbsp;REDO_DATA ESTIMATED_FLASHBACK_SIZE </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> ------------------- ------------------- -------------- ---------- ---------- ------------------------ </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> 2008-06-19 13:44:10 2008-06-19 14:33:39 &nbsp; &nbsp; &nbsp; &nbsp;5046272 &nbsp; &nbsp;9199616 &nbsp; &nbsp;2281984 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0 </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> 2008-06-19 12:36:26 2008-06-19 13:44:10 &nbsp; &nbsp; &nbsp; &nbsp;8347648 &nbsp; 35160064 &nbsp; &nbsp;4133376 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 49655808 </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> <br style="background-color:inherit;" /> </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> 监控各间隔时间内的输出闪回日志 </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> <br style="background-color:inherit;" /> </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> BEGIN_TIME &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;一个时间间隔的开始 </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> END_TIME &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;一个时间间隔的结束 </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> FLASHBACK_DATA &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;在此时间间隔内写闪回日志大小（单位：字节） </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> DB_DATA &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;在此时间间隔内数据库读写大小（单位：字节） </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> REDO_DATA &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;在此时间间隔内输出在线日志的大小（单位：字节） </div> <div style="font-family:微软雅黑;font-size:14px;line-height:21px;white-space:normal;widows:auto;background-color:#FFFFFF;"> ESTIMATED_FLASHBACK_SIZE &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;在时间间隔的结束时预估满足保留时间所需要的空间大小（单位：字节） </div>