select (UR*(UPS*DBS))+(DBS*24) as "Bytes"
from (select value as UR
from v$parameter
where name='undo_retention'),
(select (sum(undoblks)/sum(((end_time-begin_time)*86400))) as UPS
from v$undostat),
(select value as DBS
from v$parameter
where name='db_block_size');[@more@]
from (select value as UR
from v$parameter
where name='undo_retention'),
(select (sum(undoblks)/sum(((end_time-begin_time)*86400))) as UPS
from v$undostat),
(select value as DBS
from v$parameter
where name='db_block_size');[@more@]
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/136097/viewspace-982461/ ，如需转载，请注明出处，否则将追究法律责任。
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