Warning: OS async I/O limit 128 is lower than recovery batch 1024

在启动恢复的时候，alert.log如下报错，看错误是和异步IO，有关了，检查了相关参数，发现有人忘了设置privgroup
创建 /etc/privgroup 添加如下内容
dba MLOCK RTSCHED RTPRIO
执行如下语句使其生效
 setprivgrp -f /etc/privgroup
设置完后，问题解决。
Warning: OS async I/O limit 128 is lower than recovery batch 1024
Sat Oct 31 00:16:25 2009
Errors in file /u01/app/oracle/admin/dczh/bdump/dczh1_ora_1134.trc:
Sat Oct 31 00:16:25 2009
Warning: OS async I/O limit 128 is lower than recovery batch 1024
Sat Oct 31 00:16:25 2009
Warning: OS async I/O limit 128 is lower than recovery batch 1024
Sat Oct 31 00:16:25 2009
Errors in file /u01/app/oracle/admin/dczh/bdump/dczh1_ora_1136.trc:
Sat Oct 31 00:16:25 2009
Warning: OS async I/O limit 128 is lower than recovery batch 1024
Sat Oct 31 00:16:25 2009
Waiting for all non-current ORLs to be archived...

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