ITPub博客

首页 > Linux操作系统 > Linux操作系统 > Oracle RBA

Oracle RBA

原创 Linux操作系统 作者:chncaesar 时间:2013-10-11 15:31:56 0 删除 编辑
Redo Byte Address (RBA) 

An RBA points to a specific location in a particular redo thread. It is ten bytes long and has three components: 
Redo log file sequence number (4 bytes)
Block number within log (4 bytes) 
the byte offset into the block at which the redo record starts (2 bytes) 

RBAs are not necessarily unique within their thread, because the log file sequence number may be reset to 1 in all threads if a database is opened with the RESETLOGS option.
  

来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/638844/viewspace-774167/,如需转载,请注明出处,否则将追究法律责任。

请登录后发表评论 登录
全部评论

注册时间:2013-07-30

  • 博文量
    102
  • 访问量
    899690