oracle 启动监听报错TNS-12547: TNS:lost contact

监听启动出错，报以下错误：
lsnrctl start
LSNRCTL for Linux: Version 9.2.0.4.0 - Production on 06-JUL-2009 14:37:59
Copyright (c) 1991, 2002, Oracle Corporation.  All rights reserved.
Starting /opt/oracle/product/9ir2/bin/tnslsnr: please wait...
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
TNS-00517: Lost contact
Linux Error: 32: Broken pipe

数据库服务器操作系统为Red Hat AS4，属于32位操作系统，最大文本文件不能超过2G。

当$ORACLE_HOME/network/log中listener.log大小等于2G的时候，无法继续写入日志,监听服务会自动停掉，启动或停止listener时都会报错

：

数据库服务器操作系统为Red Hat AS4，属于32位操作系统，最大文本文件不能超过2G。

当$ORACLE_HOME/network/log中listener.log大小等于2G的时候，无法继续写入日志,监听服务会自动停掉，启动或停止listener时都会报错

解决办法：

1.经常手工去清除listener.log文件的内容，在数据库服务器执行以下命令

       cd $ORACLE_HOME/network/log

       cat listener.log

2、让命令lsnrctl不记录log，在数据库服务器执行以下命令

       lsnrctl

       set log_status off

       quit

     也可以在listener.ora文件中加入logging_listener=off,即可关闭监听日志

 

可能跟这个问题相关的第二种情况，错误信息如下:
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
TNS-00517: Lost contact
Linux Error: 104: Connection reset by peer

这个问题应该跟主机名有关了，查看/etc/hosts文件
[root@olivenan root]# more /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost

然后查看listener.ora文件，发现HOST=ixdba

应该是这里的问题了，那么只需在/etc/hosts增加如下即可

[root@olivenan root]# more /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1  localhost
127.0.0.1  ixdba

 

以下是另外一种情况

 今天上午，遇到一个问题，客户容灾库其中一个节点启动监听报错 TNS-12547: TNS:lost contact （另外一个节点启动正常）

根据抱错，怀疑是lintener.log日志文件太大了，超过2G了，所以无法启动，还有一个可能是/etc/hosts 目录下没有 127.0.0.1     loopback localhost 记录，这是通常导致此错误的常见原因

查看lintener.log日志文件，大小远不足2G,第一种可能排除；

r2:/oracle/app/oracle/product/9.2.0/network/log>ls -lrt
total 24
drwxr-xr-x   2 oracle   dba             256 Nov 15 2007  bak
-rw-r--r--   1 oracle   dba            6414 Feb 24 15:32 sqlnet.log
-rw-r--r--   1 oracle   dba            3025 Jul 09 11:38 listener.log

查看/etc/hosts的内容：127.0.0.1     loopback localhost      # loopback (lo0) name/address也正常，第二种可能排除

/etc/hosts
#
# This file contains the hostnames and their address for hosts in the
# network.  This file is used to resolve a hostname into an Internet
# address. 
#
# At minimum, this file must contain the name and address for each
# device defined for TCP in your /etc/net file.  It may also contain
# entries for well-known (reserved) names such as timeserver
# and printserver as well as any other host name and address.
#
# The format of this file is:
# Internet Address      Hostname        # Comments
# Items are separated by any number of blanks and/or tabs.  A '#'
# indicates the beginning of a comment; characters up to the end of the
# line are not interpreted by routines which search this file.  Blank
# lines are allowed.

# Internet Address      Hostname        # Comments
# 192.9.200.1           net0sample      # ethernet name/address
# 128.100.0.1           token0sample    # token ring name/address
# 10.2.0.2              x25sample       # x.25 name/address
127.0.0.1               loopback localhost      # loopback (lo0) name/address

这里依旧尝试了一下，rm lintener.log，在touch一个listener.log，在启动监听

Lsnrctl stop  -----先停掉listener
rm listener.log ----cd $ORACLE_HOME/network/log
touch listener.log
lsnrctl start

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=135.10.34.38)(PORT=1521)))
TNS-12547: TNS:lost contact
 TNS-12560: TNS rotocol adapter error
  TNS-00517: Lost contact
   IBM/AIX RISC System/6000 Error: 73: Connection reset by peer

报错依旧，查看lintener.log里的记录
09-JUL-2008 12:17:05 * 12546
TNS-12546: TNS ermission denied
 TNS-12560: TNS rotocol adapter error
  TNS-00516: Permission denied

查看其进程:
r2:/oracle/app/oracle/product/9.2.0/network/admin>ps -ef |grep lsnr
  oracle 192870 168578   0 12:16:13  pts/9  0:00 grep lsnr
  oracle 254244 274714   0 11:06:44  pts/0  0:00 lsnrctl
  oracle 242390      1   0 11:06:57  pts/0  0:00 /oracle/app/oracle/product/9.2.0/bin/tnslsnr LISTENER -inherit
rzyzdb2:/oracle/app/oracle/product/9.2.0/network/admin>

kill -9 242390

r2:/oracle/app/oracle/product/9.2.0/network/log>lsnrctl start

LSNRCTL for IBM/AIX RISC System/6000: Version 9.2.0.8.0 - Production on 09-JUL-2008 12:24:21

Copyright   1991, 2006, Oracle Corporation.  All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=135.10.34.38)(PORT=1521)))
TNS-12537: TNS:connection closed
 TNS-12560: TNS rotocol adapter error
  TNS-00507: Connection closed

查看节点2的sqlnet.ora发现：
问题就在此（sqlnet.ora里面有ip限制的，38这个ip,也就是出故障的这个ip不再sqlnet.ora内容里，将38添加到sqlnet.ora后，启动正常)