TNS-12560: Message 12560 not found; No message file for product=network, facility=TNS

我系统是solaris,在oracle_home/bin下执行lsnrctl start出现以下错误：

Message 1070 not found; No message file for product=network, facility=TNSTNS-12545: Message 12545 not found; No message file
for product=network, facility=TNS
TNS-12560: Message 12560 not found; No message file for product=network, facility=TNS
TNS-00515: Message 515 not found; No message file for product=network, facility=TNS
Solaris Error: 2: No such file or directory

请问是什么原因，要怎么解决，请把解决办法说详细些，因为小弟对UNIX系统不熟

------解决方法--------------------------------------------------------
listener.ora文件
看看oracle_home/network/admin下