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InnoDB:Error:io_setup()failedwithEAGAIN

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Release: 2016-06-07 15:56:18
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最近安装好了MySQL之后,在启动MySQL服务时无法正常启动MySQL。提示没有更新/var/lib/mfailedZDB.pid并退出。该MySQL与Oracle位于同一主机。有些内核参数进行过调整应该也是使用与MySQL。下面是该问题的具体描述。 1、故障现象 SZDB:~ # cat /etc/issue #故

最近安装好了MySQL之后,在启动MySQL服务时无法正常启动MySQL。提示没有更新/var/lib/mfailedZDB.pid并退出。该MySQL与Oracle位于同一主机。有些内核参数进行过调整应该也是使用与MySQL。下面是该问题的具体描述。

1、故障现象

SZDB:~ # cat /etc/issue #故障环境 

2、故障分析

#从上面的错误日志中可以看到,关键的一个信息io_setup() failed with EAGAIN 

3、故障解决

SZDB:~ # vi /etc/sysctl.conf

SZDB:~ # sysctl -p

# Author : Leshami

SZDB:~ # /etc/init.d/mysql start #调整后启动成功 

4、关于fs.aio-max-nr

aio-nr & aio-max-nr:

NAME

SYNOPSIS

Tag Description

DESCRIPTION:

RETURN VALUE:

ERRORS:

EFAULT An invalid pointer is passed for ctxp.

ENOMEM Insufficient kernel resources are available.

EAGAIN The specified maxevents exceeds the user’s limit of available events.#此案例中返回的时超出了可用event限制的最大值

ENOSYS io_setup() is not implemented on this architecture.

更多参考

有关Oracle RAC请参考

有关Oracle 网络配置相关基础以及概念性的问题请参考:

有关基于用户管理的备份和备份恢复的概念请参考

有关RMAN的备份恢复与管理请参考

有关ORACLE体系结构请参考

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