ORA-0 encountered when generating server alert SMG-4121
AIX5.3下兩節點RAC環境,資料庫版本為10.2.0.4。例項2主機突然異常重啟,按照常理來說,例項1需要進行叢集重構接管例項2上的相關資源然後正常對外訪問,這次問題就出現在例項2主機掛掉以後,例項1訪問異常緩慢,而且使用sqlplus連線資料庫的時候報錯:NFS server lndb02 not responding still trying
兩個節點的歸檔日誌是採用NFS方式互相掛載到節點主機上的,例項2主機掛掉以後相應的歸檔目錄自然也就無法訪問,難道說因為NFS無法訪問還能導致例項1的資料庫也出現問題?冷靜的想一想,這個不太可能。於是百度了一下,也找到了解決方法:
/ as sysdba
SQL*Plus: Release 10.2.0.4.0 - Production on Sun Sep 22 10:06:48 2013
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
NFS server lndb02 not responding still trying
Disconnected
oracle@lndb01$[/home/oracle]
oracle@lndb01$[/home/oracle]
oracle@lndb01$[/home/oracle]crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora....01.lsnr application ONLINE ONLINE lndb01
ora.lndb01.gsd application ONLINE ONLINE lndb01
ora.lndb01.ons application ONLINE ONLINE lndb01
ora.lndb01.vip application ONLINE ONLINE lndb01
ora....02.lsnr application ONLINE OFFLINE
ora.lndb02.gsd application ONLINE OFFLINE
ora.lndb02.ons application ONLINE OFFLINE
ora.lndb02.vip application ONLINE ONLINE lndb01
ora.orcl.db application ONLINE ONLINE lndb01
ora....l1.inst application ONLINE ONLINE lndb01
ora....l2.inst application ONLINE OFFLINE
oracle@lndb01$[/home/oracle]
oracle@lndb01$[/oracle]
oracle@lndb01$[/oracle]export HOME=/oracle/app/oracle
oracle@lndb01$[/oracle]sqlplus /nolog
SQL*Plus: Release 10.2.0.4.0 - Production on Sun Sep 22 09:58:17 2013
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
SQL> conn / as sysdba
NFS server lndb02 not responding still trying
NFS server lndb02 ok
Connected.
SQL>
SQL>
SQL>
SQL> desc v$log;
Name Null? Type
----------------------------------------- -------- ----------------------------
GROUP# NUMBER
THREAD# NUMBER
SEQUENCE# NUMBER
BYTES NUMBER
MEMBERS NUMBER
ARCHIVED VARCHAR2(3)
STATUS VARCHAR2(16)
FIRST_CHANGE# NUMBER
FIRST_TIME DATE
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