linux常见问题

1.gunzip解压时，报File too large

解决方法：

打开/etc/security/limits文件，修改相应的文件大小约束值：

default:

        fsize = -1

        core = 4194304

        cpu = -1

       data = 4194304

        rss = 4194304

        stack = 2097152

        nofiles = -1

2．安装oracle时，ORA-21561: OID generation failed

解决方法：/etc/hosts加上主机名称 hostname

3．AIX 操作系统rcp 的时候报错：rshd: 0826-813 Permission is denied.

解决方法：在用户家目录下新增.rhosts文件  把"+"写进去

4．IBM机型启动SSHD服务时，在开启SSHD服务时报错，sshd re-exec requires execution with anabsolute path

用绝对路径启动,也报错如下:

Could not loadhost key: /etc/ssh/ssh_host_key

Could not loadhost key: /etc/ssh/ssh_host_rsa_key

Could not loadhost key: /etc/ssh/ssh_host_dsa_key

Disablingprotocol version 1. Could not load host key

Disablingprotocol version 2. Could not load host key

sshd: nohostkeys available — exiting

解决方法:

#ssh-keygen -tdsa -f /etc/ssh/ssh_host_dsa_key

#ssh-keygen -trsa -f /etc/ssh/ssh_host_rsa_key

#/usr/sbin/sshd