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今天在一台服务器的日志文件中，发现如下信息：
Fatal NI connect error 12170. VERSION INFORMATION:
TNS for Linux: Version 11.1.0.7.0 - Production
Unix Domain Socket IPC NT Protocol Adaptor for Linux: Version 11.1.0.7.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 11.1.0.7.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.1.0.7.0 - Production
Time: 08-NOV-2011 13:57:10
Tracing not turned on.
Tns error struct:
ns main err code: 12535
TNS-12535: TNS:operation timed out ns secondary err code: 12560
nt main err code: 505
TNS-00505: Operation timed out nt secondary err code: 110
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.100.107.62)(PORT=52357))
查看mos，有幸发现关于该错误的相关文章
Fatal NI connect error 12170′, ‘TNS-12535: TNS:operation timed out’ Reported in 11g Alert Log [ID 1286376.1]
做了一些摘要，算是给自己做个记录，也给不能访问mos的朋友一个参考
1、适用范围
Oracle Net Services - Version: 11.1.0.6 to 11.2.0.2 - Release: 11.1 to 11.2Oracle Server - Enterprise Edition - Version: 11.1.0.6 to 11.2.0.2 [Release: 11.1 to 11.2]Information in this document applies to any platform.