A log can be reused in circular logging as long as it only contains information about transactions that have already been committed and externalized to the database disk.
只要日志中包含关于已经提交并外部化到数据库磁盘上的事务的信息，就可以以循环日志的形式重用该日志。
2
The statistical information is stored in a circular buffer, which the DBA can resize.
这种统计信息存储在一个循环缓冲区中，DBA可以设置该缓冲区的大小。
3
The mechanism is some principle for the adjusting of something, and the mechanism of information in circular economy is the process and principle that information ACTS on the circular economy.