Oracle10.2.0.5数据库报错Could not increase the asynch I/O limit

oracle 10.2.0.5.0 for HP-UX IA64位平台，后台经常出现以下警告：

*** 2012-08-15 14:49:04.497
WARNING:Could not increase the asynch I/O limit to 224 for SQL direct I/O.
It is set to 0
WARNING:Could not increase the asynch I/O limit to 288 for SQL direct I/O.
It is set to 0
*** 2012-08-15 14:49:25.657
WARNING:Could not increase the asynch I/O limit to 224 for SQL direct I/O.
It is set to 0
WARNING:Could not increase the asynch I/O limit to 288 for SQL direct I/O.
It is set to 0

经查询，以上报警是ORACLE的一个BUG，BUG号为：10208905，解决这个BUG需要安装PSU5补丁。

经过安装PSU5(p12827745_10205_HPUX-IA64.zip)后，此问题得到解决。