该进程写入数据，一直到达缓冲区的末尾，然后将剩余的数据复制到缓冲区的开始位置，覆盖以前的日志条目。
The process writes whatever data it can until the end of the buffer, and the remaining data is copied to start overwriting the previous log entry.
在写入了第一个日志条目(用蓝色表示)之后，当该进程尝试写入第二个条目(用红色表示)时，该缓冲区中已经没有足够的剩余空间。
After writing the first log entry, shown in blue, when the process tries to write the second one, shown in red, the buffer doesn't have enough space left.
例如，安装了正确的Ant扩展任务后，可以触发ftp传输，可以写入日志文件或执行另一个操作系统进程。
For instance, with the right Ant extension tasks installed, an FTP transfer could be triggered, a log file could be written, or another operating system process could be executed.
syslog服务是在后台运行的守护进程，可接受日志输入并将其写入到一个或多个单独文件。
The syslog service is a daemon that runs the background and accepts log entries and writes them to one or more individual files.
在UNIX和与UNIX相似的系统上，日志文件仅仅是文本文件，相关联的服务器进程或系统日志记录守护进程在其中写入消息。
On UNIX and UNIX-like systems, log files are simply text files that are continually appended, either by the server processes that they are associated with or by system-logging daemons.
重做日志是以循环的方式写入的；因此，在重写它们之前，需要通过启动ARCH进程来手动或自动对重做日志进行归档。
Redo logs are written in a round-robin manner; therefore, before they are overwritten, the redo logs need to be archived either manually or automatically by kick-starting the ARCH process.
例如如果重做日志缓冲满了，或者有其它的事务提交了。LGWR进程会把所有在重做日志缓冲中的重做日志事项写入重做文件，即使是一些重做记录可能还没有提交。
If the redo log buffer fills, or another transaction commits, LGWR flushes all of the redo log entries in the redo log buffer to a redo log file, even though some redo records may not be committed.
例如如果重做日志缓冲满了，或者有其它的事务提交了。LGWR进程会把所有在重做日志缓冲中的重做日志事项写入重做文件，即使是一些重做记录可能还没有提交。
If the redo log buffer fills, or another transaction commits, LGWR flushes all of the redo log entries in the redo log buffer to a redo log file, even though some redo records may not be committed.
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