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碧海蓝天 » hp-ux http://wajoynece.cn Oracle DataBase Linux Software Tue, 06 Sep 2011 08:26:04 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 HP-UX Ioctl ASYNC_CONFIG error, errno = 1 http://wajoynece.cn/2010/06/hp-ux-ioctl-async_config-error-errno-1/ http://wajoynece.cn/2010/06/hp-ux-ioctl-async_config-error-errno-1/#comments Fri, 18 Jun 2010 08:54:59 +0000 wajoynece http://wajoynece.cn/?p=187 数据库udump目录下包含了29592个trace文件, 占用10GB多的空间:

#ls | wc -l

29592

#du -sk

14390876 .

trace文件内容如下:

Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 – 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

System name: HP-UX

Release: B.11.31

Version: U

Machine: ia64

Redo thread mounted by this instance: 1

Oracle process number: 0

Ioctl ASYNC_CONFIG error, errno = 1

这个问题来源于启用了async io的hp unix系统, dba组没有mlock权限造成的;

查看/etc/privgroup文件, 发现第一行有一个注释, 进一步查看当前系统没有使用/dev/async, 同时dba组也没有MLOCK权限;

#cat /etc/privgroup

# ORACLE async i/o

dba MLOCK RTPRIO RTSCHED

#getprivgrp dba

dba:

#fuser /dev/async

/dev/async:

问题其实恰恰出现在/etc/privgroup中的注释行, 在去掉注释后, /dev/async启用, udump下不再产生日志.

#vi /etc/privgroup

“/etc/privgroup” 2 lines, 44 characters

dba MLOCK RTSCHED RTPRIO

#setprivgrp -f /etc/privgroup

#getprivgrp dba

dba: RTPRIO MLOCK RTSCHED

#fuser /dev/async

/dev/async: 3613o 3622o 3624o 3583o 3585o 3588o

总结: 有些系统配置文件不要轻易加注释.

参考metalink:

How to Disable Asynch_io on HP to Avoid Ioctl Async_config Error Errno = 1 [ID 302801.1]

http://www.oracleblog.cn/working-case/how-to-open-async-io-on-hpux/

http://www.eygle.com/archives/2009/11/hp-ux_async_config.html

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