Warning: lio_listio returned EAGAIN Performance degradation may be seen

Warning: lio_listio returned EAGAIN
Performance degradation may be seen.
WARNING:Oracle process running out of OS kernel I/O resources (1)

出现以上信息一般代表AIX 的AIO参数配置不是最佳,可能导致Oracle IO性能下降, 建议参考文档AIX: DBWR trace warning: LIO_LISTIO RETURNED EAGAIN [ID 265491.1]来调优AIX AIO参数,一般在AIX 版本4、5上才需要调优该AIO参数,在AIX 6上默认配置即可。


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