TNS-12547 一次监听意外终止的启示

今天业务部门打电话说BI用不了了，我连了一下。报错 TNS丢失


没人动，好好的TNS怎么会停了呢

看看监听

-bash-3.2$lsnrctl

lsnrctl>status

看到监听居然停了

lsnrctl>start

监听起来了

找找原因，死也要死的明白些

-bash-3.2$ cd /oracle/product/10.2.0/network/log

-bash-3.2$ ls

bidi.log bi.log listener.log sqlnet.log

-bash-3.2$ tail -n 20 sqlnet.log

Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.47)(PORT=50892))

***********************************************************************

Fatal NI connect error 12547, connecting to:

(LOCAL=NO)

VERSION INFORMATION:

TNS for Linux: Version 10.2.0.4.0 - Production

Oracle Bequeath NT Protocol Adapter for Linux: Version 10.2.0.4.0 - Production

TCP/IP NT Protocol Adapter for Linux: Version 10.2.0.4.0 - Production

Time: 18-11鏈2013 14:53:17

Tracing not turned on.

Tns error struct:

ns main err code: 12547

TNS-12547: TNS:lost contact

ns secondary err code: 12560

nt main err code: 0

nt secondary err code: 0

nt OS err code: 0

-bash-3.2$

除了TNS-12547: TNS:lost contact

没什么有价值的信息，百度一下TNS-12547：

有的说是监听的日志文件太大了引起的

-bash-3.2$ ll -h

total 2.8G

-rw-r----- 1 oracle dba 1.7K May 26 2011 bidi.log

-rw-r----- 1 oracle dba 17K May 26 2011 bi.log

-rw-r----- 1 oracle dba 2.8G Nov 18 15:36 listener.log

-rw-r----- 1 oracle dba 3.3M Nov 18 14:53 sqlnet.log
我了个去！！竟然有2.8GB

-bash-3.2$rm listener.log

-bash-3.2$touch listener.log

-bash-3.2$lsnrctl start

解决收工