oracle linux配置监听时报错端口占用

前提回现

修改了主机名，由hyldb修改为hyl。

问题现象

配置监听，警告提示，如下所示：

解决方法

1、检查1521端口

[root@hyl ~]# netstat -a

--查看端口占用情况，查明1521端口并未被占用

[plain] view plain copy 在CODE上查看代码片派生到我的代码片

Active Internet connections (servers and established)

Proto Recv-Q Send-Q Local Address Foreign Address State

tcp0 0 localhost.localdomain:2208 *:* LISTEN

tcp0 0 *:sunrpc*:* LISTEN

tcp0 0 *:pftp *:* LISTEN

tcp0 0 localhost.localdomain:ipp *:* LISTEN

tcp0 0 localhost.localdomain:smtp *:* LISTEN

tcp0 0 localhost.localdomain:2207 *:* LISTEN

tcp0 0 *:ssh *:* LISTEN

getnameinfo failed

getnameinfo failed

tcp0132 [UNKNOWN]:ssh [UNKNOWN]:51492 ESTABLISHED

udp0 0 *:spmp *:*

udp0 0 *:659 *:*

udp0 0 *:37437 *:*

udp0 0 *:mdns *:*

udp0 0 *:sunrpc*:*

udp0 0 *:ipp *:*

udp0 0 *:mdns *:*

udp0 0 *:32372 *:*

Active UNIX domain sockets (servers and established)

Proto RefCnt Flags Type State I-Node Path

unix 2 [ ACC ] STREAM LISTENING 4226 @ISCSIADM_ABSTRACT_NAMESPACE

unix 2 [ ACC ] STREAM LISTENING 4938 /var/run/dbus/system_bus_socket

unix 2 [ ACC ] STREAM LISTENING 7578 @/tmp/fam-root-

unix 2 [ ACC ] STREAM LISTENING 5021 /var/run/sdp

unix 2 [ ACC ] STREAM LISTENING 5102 /var/run/pcscd.comm

unix 2 [ ACC ] STREAM LISTENING 5127 /var/run/acpid.socket

unix 2 [ ACC ] STREAM LISTENING 6197 /var/run/cups/cups.sock

unix 2 [ ACC ] STREAM LISTENING 6633 /var/run/avahi-daemon/socket

unix 2 [ ACC ] STREAM LISTENING 6473 /dev/gpmctl

unix 2 [ ACC ] STREAM LISTENING 4212 @ISCSID_UIP_ABSTRACT_NAMESPACE

unix 2 [ ] DGRAM1102 @/org/kernel/udev/udevd

unix 2 [ ACC ] STREAM LISTENING 6509 /tmp/.font-unix/fs7100

unix 2 [ ACC ] STREAM LISTENING 7135 /tmp/.gdm_socket

unix 2 [ ACC ] STREAM LISTENING 7165 /tmp/.X11-unix/X0

unix 2 [ ] DGRAM5161 @/org/freedesktop/hal/udev_event

unix 17 [ ] DGRAM4527 /dev/log

unix 2 [ ACC ] STREAM LISTENING 5152 @/var/run/hald/dbus-R5ibTGYpjn

unix 2 [ ACC ] STREAM LISTENING 5153 @/var/run/hald/dbus-1m4p21ErfG

unix 2 [ ACC ] STREAM LISTENING 4482 /var/run/audispd_events

unix 2 [ ] DGRAM7618

unix 3 [ ] STREAM CONNECTED 7581 @/tmp/fam-root-

unix 3 [ ] STREAM CONNECTED 7580

unix 3 [ ] STREAM CONNECTED 7571 /var/run/dbus/system_bus_socket

unix 3 [ ] STREAM CONNECTED 7570

unix 3 [ ] STREAM CONNECTED 7448 /tmp/.X11-unix/X0

unix 3 [ ] STREAM CONNECTED 7447

unix 3 [ ] STREAM CONNECTED 7364 /tmp/.X11-unix/X0

unix 3 [ ] STREAM CONNECTED 7363

unix 3 [ ] STREAM CONNECTED 7261 /tmp/.font-unix/fs7100

unix 3 [ ] STREAM CONNECTED 7260

unix 3 [ ] STREAM CONNECTED 7217 /var/run/pcscd.comm

unix 3 [ ] STREAM CONNECTED 7216

unix 3 [ ] STREAM CONNECTED 7264 /tmp/.X11-unix/X0

unix 3 [ ] STREAM CONNECTED 7190

unix 3 [ ] STREAM CONNECTED 7177 /var/run/acpid.socket

unix 3 [ ] STREAM CONNECTED 7176

unix 2 [ ] DGRAM7163

unix 3 [ ] STREAM CONNECTED 6636 /var/run/dbus/system_bus_socket

unix 3 [ ] STREAM CONNECTED 6635

unix 3 [ ] STREAM CONNECTED 6630

unix 3 [ ] STREAM CONNECTED 6629

unix 2 [ ] DGRAM6627

unix 2 [ ] DGRAM6467

unix 2 [ ] DGRAM6426

unix 2 [ ] DGRAM6379

unix 2 [ ] DGRAM6324

unix 2 [ ] DGRAM6109

unix 2 [ ] DGRAM6068

unix 2 [ ] DGRAM5958

unix 3 [ ] STREAM CONNECTED 5930 /var/run/dbus/system_bus_socket

unix 3 [ ] STREAM CONNECTED 5929

unix 3 [ ] STREAM CONNECTED 5903 @/var/run/hald/dbus-R5ibTGYpjn

unix 3 [ ] STREAM CONNECTED 5902

unix 3 [ ] STREAM CONNECTED 5896 @/var/run/hald/dbus-R5ibTGYpjn

unix 3 [ ] STREAM CONNECTED 5893

unix 3 [ ] STREAM CONNECTED 5738 @/var/run/hald/dbus-R5ibTGYpjn

unix 3 [ ] STREAM CONNECTED 5737

unix 3 [ ] STREAM CONNECTED 5714 /var/run/acpid.socket

unix 3 [ ] STREAM CONNECTED 5713

unix 3 [ ] STREAM CONNECTED 5708 @/var/run/hald/dbus-R5ibTGYpjn

unix 3 [ ] STREAM CONNECTED 5707

unix 3 [ ] STREAM CONNECTED 5156 @/var/run/hald/dbus-1m4p21ErfG

unix 3 [ ] STREAM CONNECTED 5155

unix 2 [ ] DGRAM5101

unix 3 [ ] STREAM CONNECTED 5016 /var/run/dbus/system_bus_socket

unix 3 [ ] STREAM CONNECTED 5015

unix 2 [ ] DGRAM4987

unix 2 [ ] DGRAM4977

unix 3 [ ] STREAM CONNECTED 4942

unix 3 [ ] STREAM CONNECTED 4941

unix 3 [ ] STREAM CONNECTED 4900

unix 3 [ ] STREAM CONNECTED 4899

unix 2 [ ] DGRAM4798

unix 2 [ ] DGRAM4543

unix 3 [ ] STREAM CONNECTED 4473

unix 3 [ ] STREAM CONNECTED 4472 <span style="font-size:14px"></span>

2、检查hosts

[root@hyl ~]# vi /etc/hosts

修改前：

# Do not remove the following line, or various programs

# that require network functionality will fail.

127.0.0.1 hyldb localhost.localdomain localhost

::1 localhost6.localdomain6 localhost6

192.168.56.101 hyl

~

~

~

--由于修改了主机名（hyldb修改为hyl），将之前配置中hyldb内容删除

修改为：

# Do not remove the following line, or various programs

# that require network functionality will fail.

127.0.0.1 localhost.localdomain localhost

::1 localhost6.localdomain6 localhost6

192.168.56.101 hyl

~

~

~

~

3、检查network

# vi /etc/sysconfig/network

--确认添加了如下信息

NETWORKING=yes

HOSTNAME=hyl

4、检查ipv6是否关闭

查看ipv6状态，查看其是否被关闭

[root@hyl ~]# lsmod |grep ipv6

ipv6 435105 17 cnic

xfrm_nalgo 43333 1 ipv6

[plain] view plain copy 在CODE上查看代码片派生到我的代码片

补充：关闭ipv6方法

1） # vim /etc/modprobe.conf

在其中加入下面这一行，

install ipv6 /bin/true

保存并退出。

2）# vim /etc/sysconfig/network

在其中加入下面配置项：

NETWORKING_IPV6=no

IPV6INIT=no

重启后查询：

[root@hyl ~]# lsmod |grep ipv6

--没有显示ipv6相关信息，表示ipv6已经关闭

5、重启系统后，查看hostname

[root@hyl ~]# hostname

--查询主机名

hyl

6、再次执行netca

配置监听、dbca建库成功。

你能把sshd_config贴出来看下么？个人感觉可能跟配置有关，因为看到你ssh都没有验证让你输入用户密码，你是配置成公钥认证（Publickeyauthentication）吗？

cat /etc/ssh/sshd_config

另外，你的Windows ssh客户端版本是7.6，你能看下sshd server端版本是多少吗？

如果服务端版本较高，还可能是ssh客户端配置不兼容导致，建议你在Windows上把ssh_config文件备份后重命名（相当于清除配置），然后再尝试连接看看。

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