监听异常停止

监听日志文件中有一下报错，手工重启监听没有反应，最后关掉数据库，重启了服务器

TNS-12560: TNS:protocol adapter error

TNS-00530: Protocol adapter error

  Solaris Error: 130: Software caused connection abort

01-MAR-2014 22:07:57 * 12540

TNS-12540: TNS:internal limit restriction exceeded

01-MAR-2014 22:07:57 * 12582

TNS-12582: TNS:invalid operation

TNS-12615: TNS:preempt error

01-MAR-2014 22:07:57 * 1159

TNS-01159: Internal connection limit has been reached; listener has shut down

TNS-12540: TNS:internal limit restriction exceeded

No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=kgserver2)(PORT=1521)))

No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.180.180.3)(PORT=1521)))

No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))

敢问各位大师什么原因会造成以上报错导致监听异常停止