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Tag Archives: REDO SIZE
STATSPACK报告REDO SIZE出现负值
客户9.2.0.8数据库的STATSPACK报告出现负的REDO SIZE。 类似信息如下: LOAD Profile ~~~~~~~~~~~~ Per SECOND Per TRANSACTION ————— ————— Redo SIZE: -263,339.94 -685,483.59Load Profile ~~~~~~~~~~~~ Per Second Per Transaction ————— ————— Redo size: -263,339.94 -685,483.59 其实经常出现的还包括逻辑读以及物理读等。其实不查询MOS也可以确定,这是Oracle的bug,而导致bug的原因应该是底层的C代码中没有使用UNSIGNED类型,以至于变量溢出后出现了负值。 在MOS中的对应描述为:Redo Size Negative In Statspack Report [ID 308414.1],Oracle在10g中解决了这个问题。确认影响版本从8.1.7.4到9.2.0.8。