日志文件项
78.**********************************************************************
79.log file records
80.**********************************************************************
81. (blkno = 0x5, size = 72, max = 5, in-use = 4, last-recid= 4)
82.log file #1:
83. (name #5) e:\oracle\ora92\test\redo01.log
84. thread 1 redo log links: forward: 2 backward: 0
log file #1写满后,会切换到forward: 2,即切换到log file #2,这一点可以通过log file #1的next scn: 0x0000.04b9870a等于log file #2的low scn: 0x0000.04b9870a