Nathan；

當DNS主機關閉時造成Linux主機上的Oracle資料庫異常，其他主機無法順利存取該Oracle資料庫，而且同一時間有多台主機(Linux+Oracle)有相同狀況。

Oracle錯誤訊息：TNS-12537、ORA-609

/etc/resolv.conf

參考文章：http://blog.retailsolution.cn/archives/3502

Hi again, this was Linux DNS problem and it solved by removing /etc/resolv.conf file. Just wanted for future readers of the thread to know.

將resolv.conf內的［nameserver］設定註解掉［#nameserver］

若擔心未設定DNS會有異常，可以設定serach xxx.xxx(Domain name)

(參考文章：http://www.weithenn.org/2009/04/etc-resolv-conf.html)

或者於/etc/host下設定IP跟Hostname的對應。

/etc/host

# Do not remove the following line, or various programs

# that require network functionality will fail.

127.0.0.1         localhost.localdomain localhost

::1            localhost6.localdomain6 localhost6

XX.XX.XX.XX     XXXX

XX.XX.XX.XX     XXXX

XX.XX.XX.XX     XXXX