fal 失败 无法读取丢失的日志

FAL[client]: Failed to request gap sequence 

 GAP - thread 1 sequence 8-9

 DBID 4085976867 branch 830994121

FAL[client]: All defined FAL servers have been attempted.

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Check that the CONTROL_FILE_RECORD_KEEP_TIME initialization

parameter is defined to a value that is sufficiently large

enough to maintain adequate log switch information to resolve
archivelog gaps.

备库因日志中断而不能继续进行介质恢复。我们的问题就是如何将这些日志文件找回来。

在主库中，判断归档日志状况。

select *from v$archived_log b where b.SEQUENCE#>=68042 and b.THREAD#=2 andb.SEQUENCE#<=68051 and b.DEST_ID=1 and b.DELETED='YES';

通过这个SQL，确认这些归档日志已经被删除了。

找出丢失的归档 可以 os copy或者rman 恢复

恢复单独归档

list backup of archivelog from sequence 8 until sequence 9 thread 1;

restore archivelog from sequence 13 until sequence 14 thread 2;