restore archivelog 常用用法

         restore archivelog all;   还原全部归档日志文件     restore archivelog from logseq 2213 ;  还原log sequence为2213之后的所有归档日志     restore archivelog from logseq 2213 until logseq 2222; 还原log sequence为2213到2222这几个归档日志      restore archivelog from time 'sysdate-7'; 还原七天以内的归档日志     restore archivelog until logseq 2222; 还原到seqence 为2222的日志文件为止     set archivelog destination to '/mnt/data/backup/PBF/archive';设定还原日志文件到新路径，如     run{     set archivelog destination to '/mnt/data/backup/PBF/archive';     restore archivelog low logseq 2222;}