TNS-12547 TNS-12560 TNS-00517

%lsnrctl start
报告如下错误：
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
TNS-00517: Lost contact
Linux Error: 32: Broken pipe

12547, 00000, "TNS:lost contact"
// *Cause: Partner has unexpectedly gone away, usually during process
// startup.
// *Action: Investigate partner application for abnormal termination. On an
// Interchange, this can happen if the machine is overloaded.

12560, 00000, "TNS:protocol adapter error"
// *Cause: A generic protocol adapter error occurred.
// *Action: Check addresses used for proper protocol specification. Before
// reporting this error, look at the error stack and check for lower level
// transport errors.For further details, turn on tracing and reexecute the
// operation. Turn off tracing when the operation is complete.

00517, 00000, "Lost contact"
// *Cause: Partner has unexpectedly gone away.
// *Action: Investigate partner application for abnormal termination.


咳，一看到，还真有一点蒙，反复看了listener.ora，没什么问题啊，根据错误信息，有点晕，看了listener.log，没看出什么毛病，本月11号后就没有连接了。

上网搜索一下吧，说是listener.log超过2G了就会这样，回头一看，可不是有2G了吗，马上
%mv listener.log listener.log.bak
%lsnrctl start
一切OK，listener正常了。再看刚起来的listener.log，一下就好大，可能是那个哥们做了什么连接审计什么的了。。。。

BTW：listener.log文件在$ORACLE_HOME/network/log目录.