dataguard备库出现GAP修复 1. 产生原因 巡检发现备库的日志应用有滞后的情况 DGMGRL> show database sxcmpdg 'RecvQEntries'STANDBY_RECEIVE_QUEUE {代码...} 去备库查询滞后情况 select * from v$archive_gap; THREAD# LOW_SEQUENCE# HIGH_SEQUENCE#---------- ------------- -------------- {代码...} 去broker中查...