Where 2 is the secondlog that had a file name of S0000002.LOG.
其中的2是指第二个日志，其文件名是S0000002 . LOG。
2
If you only log to the second, you cannot reestablish the chronology.
如果你只记录到秒，你就无法恢复原始时间顺序。
3
MIRRORLOGPATH is the configuration parameter to specify a secondary path, allowing DB2 to write an identical second copy of log files to a different directory.