互联网服务数据库
关于LowtranLSN和MINBUFLSN
问题一：LOWTRANLSN与MINBUFLSN 的大小关系，什么情况下MINBUFLSN 大于LOWTRANLSN，什么情况下MINBUFLSN 小于LOWTRANLSN
问题二：不理解为什么MINBUFLSN 大于LOWTRANLSN时，不需要读LOWTRANLSN 与 MINBUFLSN之间的log record。
不是应该把recover的STARTLSN 设置为min(MINBUFLSN ,LOWTRANLSN)即LOWTRANLSN，
如果按如下的说法不是把STARTLSN 设置为max(MINBUFLSN ,LOWTRANLSN)
if LOWTRANLSN is smaller than MINBUFLSN, no data pages need be read in while recovering between LOWTRANLSN and MINBUFLSN inasmuch as the updates logged will have been applied. This phase of the invention will hereinafter be referred to as "mini analysis". After MINBUFLSN has been reached, the normal REDO process of recovery resumes.
问题二：不理解为什么MINBUFLSN 大于LOWTRANLSN时，不需要读LOWTRANLSN 与 MINBUFLSN之间的log record。
不是应该把recover的STARTLSN 设置为min(MINBUFLSN ,LOWTRANLSN)即LOWTRANLSN，
如果按如下的说法不是把STARTLSN 设置为max(MINBUFLSN ,LOWTRANLSN)
if LOWTRANLSN is smaller than MINBUFLSN, no data pages need be read in while recovering between LOWTRANLSN and MINBUFLSN inasmuch as the updates logged will have been applied. This phase of the invention will hereinafter be referred to as "mini analysis". After MINBUFLSN has been reached, the normal REDO process of recovery resumes.