查归档日志文件每小时生成量 - miki西游 不积跬步,无以至千里;不积小流,无以成江海 - ITeye博客
在Oracle数据库中,通过v$archived_log数据字典视图查询该数据库的归档日志文件的生成情况。如果你以为在rac下需要查的gv$archvied_log视图,这其实是一个错误的想法。无论在单实例数据库,还是多实例的RAC数据库,都是查这个视图来获取信息。
(miki西游 @mikixiyou 原文链接: http://mikixiyou.iteye.com/blog/1749746)
查当天每小时的归档日志生成量
Sql代码
- select logtime,
- count(*),
- round(sum(blocks * block_size) / 1024 / 1024) mbsize
- from (select trunc(first_time, 'hh') as logtime, a.BLOCKS, a.BLOCK_SIZE
- from v$archived_log a
- where a.DEST_ID = 1
- and a.FIRST_TIME > trunc(sysdate))
- groupby logtime
- orderby logtime desc;
查最近一周每天的归档日志生成量
Sql代码
- select logtime,
- count(*),
- round(sum(blocks * block_size) / 1024 / 1024) mbsize
- from (select trunc(first_time, 'dd') as logtime, a.BLOCKS, a.BLOCK_SIZE
- from v$archived_log a
- where a.DEST_ID = 1
- and a.FIRST_TIME > trunc(sysdate - 7))
- groupby logtime
- orderby logtime desc;
如果你需要知道RAC下各个节点的归档日志情况,我将上面脚本略作修改,增加thread#列。
查当天每小时的各个实例的归档日志生成量
Sql代码
- select THREAD#,
- logtime,
- count(*),
- round(sum(blocks * block_size) / 1024 / 1024) mbsize
- from (select a.THREAD#,
- trunc(first_time, 'hh') as logtime,
- a.BLOCKS,
- a.BLOCK_SIZE
- from v$archived_log a
- where a.DEST_ID = 1
- and a.FIRST_TIME > trunc(sysdate))
- groupby THREAD#, logtime
- orderby THREAD#, logtime desc;
查最近一周每天的各个实例的归档日志生成量
Sql代码
- select THREAD#,
- logtime,
- count(*),
- round(sum(blocks * block_size) / 1024 / 1024) mbsize
- from (select THREAD#,
- trunc(first_time, 'dd') as logtime,
- a.BLOCKS,
- a.BLOCK_SIZE
- from v$archived_log a
- where a.DEST_ID = 1
- and a.FIRST_TIME > trunc(sysdate - 7))
- groupby THREAD#, logtime
- orderby THREAD#, logtime desc;
敬请留存,以备不时之需 @mikixiyou