oracle 11gR2 asm不能啟動的處理方法

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公司由于斷電導(dǎo)致oracle 11g R2 asm（aix 6.1） 數(shù)據(jù)庫不能啟動，處理過程如下：

aix1@grid[/oracle11/app/grid/11.2.0]$sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Mon Mar 12 14:22:13 2012

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup
ORA-01078: failure in processing system parameters
ORA-29701: unable to connect to Cluster Synchronization Service

檢測 css 進(jìn)程：

aix1@grid[/home/grid]$crsctl check css
CRS-4639: Could not contact Oracle High Availability Services
CRS-4000: Command Check failed, or completed with errors.
aix1@grid[/home/grid]$ps -ef|grep cssd
    grid 135192 225738   0 12:08:39  pts/2  0:00 grep cssd

檢測has進(jìn)程：

aix1@grid[/home/grid]$crsctl check has
CRS-4639: Could not contact Oracle High Availability Services

說明ohasd進(jìn)程沒有啟動，啟動ohasd進(jìn)程：

# ./ohasd start
Starting ohasd:
CRS-4123: Oracle High Availability Services has been started.

檢查：

aix1@grid[/oracle11/app/grid/11.2.0]$ crsctl stat resource -t -init
--------------------------------------------------------------------------------
NAME           TARGET  STATE        SERVER                   STATE_DETAILS      
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA2.dg
               ONLINE  OFFLINE      aix1                                        
ora.LISTENER.lsnr
               ONLINE  OFFLINE      aix1                                        
ora.asm
               ONLINE  OFFLINE      aix1                                        
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.cssd
      1        ONLINE  OFFLINE                                                  
ora.db11.db
      1        ONLINE  OFFLINE                                                  
ora.diskmon
      1        ONLINE  OFFLINE 

啟動數(shù)據(jù)庫：

aix1@grid[/oracle11/app/grid/11.2.0]$su - oracle11
oracle11's Password:
aix1@oracle11[/dsg]$sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Mon Mar 12 14:34:34 2012

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup
ORACLE instance started.

Total System Global Area 1.3696E+10 bytes
Fixed Size                  2219808 bytes
Variable Size            6878658784 bytes
Database Buffers         6777995264 bytes
Redo Buffers               37015552 bytes
Database mounted.
Database opened.
SQL>

ok 數(shù)據(jù)庫啟動。

接下就是要探討為什么ohasd進(jìn)程為什么在開機的時候沒有自動啟動？

原因是：安裝grid 軟件的lv不是自動掛載的。所以服務(wù)器在啟動的時候是不能自動掛載grid所在lv，也就不能自動啟動ohasd了。如果手動掛載lv，那么必須手動啟動ohasd服務(wù)。

修改lv為自動掛載：

System Storage Management (Physical & Logical Storage)
-->File Systems
--->Add / Change / Show / Delete File Systems
-->Enhanced Journaled File Systems
-->Change / Show Characteristics of an Enhanced Journaled File System

選擇要自動掛載點
Mount AUTOMATICALLY at system restart?              yes         ------由no改為yes即可

數(shù)據(jù)剛安裝完成的時候，has進(jìn)程是自動啟動，用下面的命令設(shè)置自動啟動;

aix1@grid[/home/grid]$crsctl enable has  --啟用自動啟動

aix1@grid[/home/grid]$crsctl disable has --關(guān)閉自動啟動

手動啟動 has：

crsctl start  has

crsctl stop has

查看has 的狀態(tài)：

crsctl check has

ohasd 資源啟動后，才能啟動crs資源。

在11gR2中, ohasd包含了crsd、ocssd、evmd.

ohasd負(fù)責(zé)啟動lower stack的集群資源, crsd負(fù)責(zé)啟動上層的集群資源.

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