摘要:
SELECT d.undo_size/(1024*1024) "ACTUAL UNDO SIZE [MByte]", SUBSTR(e.value,1,25) "UNDO RETENTION [Sec]", (TO_NUMBER(e.value) * TO_NUMBER(f.value) * g.undo_block_per_sec) / (1024*1024) "NEEDED UNDO SIZE [MByte]" FROM ( SELECT SUM(a.bytes) undo_size FROM v$datafile a, v$ta 阅读全文
posted @ 2012-08-31 15:08 徐正柱- 阅读(629) 评论(0) 推荐(0) 编辑