Recovering from the loss of an inactive redo log group.
从不活动的重做日志组的丢失中恢复。
Recovering from the loss of the current redo log group.
从当前重做日志组的丢失中恢复。
Recovering from the loss of an only active redo log group
从惟一活动重做日志组的丢失中恢复。
Recovering from the loss of one member of an online redo log group.
从丢失的联机重做日志组的成员中进行恢复。
Maintaining multiple members of an online redo log group protects against the loss of the redo log.
保存在线重做日志文件组的多个成员来保证重做日志不丢失。
Since the redo log group is inactive and is archived, just clear the redo log - alter database clear logfile group N (where N is the group # of the lost redo log)
由于重做日志组是不活动和归档的，所以只需清除重做日志即可 ——alterdatabaseclear logfilegroupN（其中 N 是丢失的重做日志的组 #）。
To investigate what status is the missing redo log is - Select * from v$logfile shows which group and member is INVALID
要检查丢失的重做日志处于什么状态 ——Select *fromv$logifle显示哪个组及哪个成员是无效的。
To investigate what status is the missing redo log is - Select * from v$logfile shows which group and member is INVALID
要检查丢失的重做日志处于什么状态 ——Select *fromv$logifle显示哪个组及哪个成员是无效的。
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