64.You performed an incomplete recovery and opened the database with the RESETLOGS option. The
LOG_ARCHIVE_FORMAT parameter is set to 'ora_%t_%s_%r.log'. Which statement regarding the
archived redo log files, created in an earlier incarnation of the database, is true?
A. The archived redo log files will be overwritten.
B. The archived redo log files are deleted automatically.
C. The archived redo log files should be moved to some other location.
D. The archived redo log files are still maintained because the file names are unique.
Answer: D
RESETLOGS之后,LOG SEQUENCE NUMBER被重置,
归档日志文件格式中各个符号的意思是:
%t thread number
%s log sequence number
%r resetlogs ID that ensures unique names are constructed for the archived log files across multiple incarnations of the database
归档日志文件按照这个规则产生的时候,文件名是唯一的。所以,不可能被覆盖。
也不会被自动删除或者移动到另外的位置。
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