AsM丟魂記？（二）
昨天的問題，貌似已經結束。今天朋友又打來電話，資料庫又當機了。難道ASM的磁碟不夠，整個系統在使用者寫入資料庫的時候，磁碟滿了，無法寫入，造成資料庫崩潰？
1、問題繼續分析：
經過我不懈的努力，將節點恢復到目前狀態：
[oracle@rac2 bin]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.orcl.db application ONLINE OFFLINE
ora....l1.inst application ONLINE OFFLINE
ora....l2.inst application ONLINE OFFLINE
ora....SM1.asm application ONLINE ONLINE rac1
ora....C1.lsnr application ONLINE ONLINE rac1
ora.rac1.gsd application ONLINE ONLINE rac1
ora.rac1.ons application ONLINE ONLINE rac1
ora.rac1.vip application ONLINE ONLINE rac1
ora....SM2.asm application ONLINE ONLINE rac2
ora....C2.lsnr application ONLINE ONLINE rac2
ora.rac2.gsd application ONLINE ONLINE rac2
ora.rac2.ons application ONLINE ONLINE rac2
ora.rac2.vip application ONLINE ONLINE rac2
資料庫的例項始終是啟動不了。我一直在納悶，今天見鬼了。。。。。
嘗試手工啟動資料庫：
[oracle@rac2 bin]$ sqlplus /nolog
SQL*Plus: Release 10.2.0.2.0 - Production on Thu Mar 5 01:06:14 2009
Copyright (c) 1982, 2005, Oracle. All Rights Reserved.
SQL> conn sys/oracle as sysdba
Connected to an idle instance.
SQL> startup
ORA-01078: failure in processing system parameters
ORA-01565: error in identifying file '+DATA/orcl/spfileorcl.ora'
ORA-17503: ksfdopn:2 Failed to open file +DATA/orcl/spfileorcl.ora
ORA-15077: could not locate ASM instance serving a required diskgroup
SQL>
SQL> exit
Disconnected
沒有磁碟？為什麼？
[oracle@rac2 bin]$ sqlplus /nolog
SQL*Plus: Release 10.2.0.2.0 - Production on Thu Mar 5 01:06:14 2009
Copyright (c) 1982, 2005, Oracle. All Rights Reserved.
SQL> conn sys/oracle as sysdba
Connected to an idle instance.
SQL> startup
ORA-01078: failure in processing system parameters
ORA-01565: error in identifying file '+DATA/orcl/spfileorcl.ora'
ORA-17503: ksfdopn:2 Failed to open file +DATA/orcl/spfileorcl.ora
ORA-15077: could not locate ASM instance serving a required diskgroup
SQL>
SQL> exit
Disconnected
[oracle@rac2 bin]$ crs_start ora.orcl.orcl2.inst
Attempting to start `ora.orcl.orcl2.inst` on member `rac2`
Start of `ora.orcl.orcl2.inst` on member `rac2` failed.
rac1 : CRS-1018: Resource ora.rac2.vip (application) is already running on rac2
CRS-0215: Could not start resource 'ora.orcl.orcl2.inst'.
這樣貌似也啟動不了，報沒有看到資源的錯誤。為什麼？ASM已經啟動了！
確認一下：
[oracle@rac2 bin]$ ps -ef|grep ASM
oracle 30320 1 0 00:06 ? 00:00:00 asm_pmon_+ASM2
oracle 30322 1 0 00:06 ? 00:00:00 asm_diag_+ASM2
oracle 30324 1 0 00:06 ? 00:00:00 asm_psp0_+ASM2
oracle 30326 1 0 00:06 ? 00:00:01 asm_lmon_+ASM2
oracle 30328 1 0 00:06 ? 00:00:00 asm_lmd0_+ASM2
oracle 30330 1 0 00:06 ? 00:00:00 asm_lms0_+ASM2
oracle 30334 1 0 00:06 ? 00:00:00 asm_mman_+ASM2
oracle 30336 1 0 00:06 ? 00:00:00 asm_dbw0_+ASM2
oracle 30348 1 0 00:06 ? 00:00:00 asm_lgwr_+ASM2
oracle 30365 1 0 00:06 ? 00:00:00 asm_ckpt_+ASM2
oracle 30367 1 0 00:06 ? 00:00:00 asm_smon_+ASM2
oracle 30369 1 0 00:06 ? 00:00:00 asm_rbal_+ASM2
oracle 30371 1 0 00:06 ? 00:00:00 asm_gmon_+ASM2
oracle 30423 1 0 00:06 ? 00:00:00 asm_lck0_+ASM2
oracle 30491 1 0 00:06 ? 00:00:00 /u01/app/oracle/product/10.2.0/asm/bin/racgimon daemon ora.rac2.ASM2.asm
oracle 25371 16831 0 01:08 pts/2 00:00:00 grep ASM
看來是沒問題！ASM程式是啟動的。
root@rac2 ~]# /etc/init.d/oracleasm listdisks
[root@rac2 ~]# /etc/init.d/oracleasm enable
Writing Oracle ASM library driver configuration: [ OK ]
Scanning system for ASM disks: [ OK ]
[root@rac2 ~]# /etc/init.d/oracleasm listdisks
掃描一下ASM是否啟動，發現找不到ASM新增的磁碟。
基於作業系統層面，檢視一下磁碟（其實這一步做不做都是多餘）
[root@rac2 ~]# df -m
Filesystem 1M-blocks Used Available Use% Mounted on
/dev/sda2 10077 884 8681 10% /
/dev/sda1 190 14 168 8% /boot
none 3986 0 3986 0% /dev/shm
/dev/sda7 4031 47 3779 2% /tmp
/dev/sda8 95178 30170 60174 34% /u01
/dev/sda6 10077 2151 7414 23% /usr
/dev/sda5 10077 159 9407 2% /var
172.16.1.160:/u01/rac1Arch
95186 22229 68122 25% /u01/rac1Arch
/dev/sdb1 1024 112 913 11% /u03
但是，我做到這個步驟，就明白可能儲存有問題：
[root@rac2 ~]# fdisk -l
Disk /dev/sda: 146.6 GB, 146695782400 bytes
255 heads, 63 sectors/track, 17834 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 25 200781 83 Linux
/dev/sda2 26 1330 10482412+ 83 Linux
/dev/sda3 1331 2375 8393962+ 82 Linux swap
/dev/sda4 2376 17834 124174417+ 5 Extended
/dev/sda5 2376 3680 10482381 83 Linux
/dev/sda6 3681 4985 10482381 83 Linux
/dev/sda7 4986 5507 4192933+ 83 Linux
/dev/sda8 5508 17834 99016596 83 Linux
Disk /dev/sdb: 1073 MB, 1073741824 bytes
34 heads, 61 sectors/track, 1011 cylinders
Units = cylinders of 2074 * 512 = 1061888 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 1011 1048376+ 83 Linux
Disk /dev/sdd: 1073 MB, 1073741824 bytes
34 heads, 61 sectors/track, 1011 cylinders
Units = cylinders of 2074 * 512 = 1061888 bytes
Device Boot Start End Blocks Id System
/dev/sdd1 1 1011 1048376+ 83 Linux
根本沒發現ASM的卷組！看來該卷組根本沒有掛載上來！
[root@rac2 ~]# ls -lat /dev/raw/raw*
ls: /dev/raw/raw*: No such file or directory
沒有這個目錄！
[root@rac2 dev]# su - oracle
[oracle@rac2 ~]$ srvctl config asm -n rac1
+ASM1 /u01/app/oracle/product/10.2.0/asm
[oracle@rac2 ~]$ srvctl config asm -n rac2
+ASM2 /u01/app/oracle/product/10.2.0/asm
[oracle@rac2 ~]$ export ORACLE_SID=+ASM2
[oracle@rac2 ~]$ sqlplus /nolog
SQL*Plus: Release 10.2.0.2.0 - Production on Thu Mar 5 01:42:05 2009
Copyright (c) 1982, 2005, Oracle. All Rights Reserved.
SQL> conn / as sysdba
Connected to an idle instance.
SQL> exit
Disconnected
[oracle@rac2 ~]$ srvctl status asm -n rac1
ASM instance +ASM1 is running on node rac1.
[oracle@rac2 ~]$
這樣就明白了，ASM的卷組丟失，但是ASM的程式仍舊執行，看來這次ASM的魂魄是丟失啦。。。。。
來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/8334342/viewspace-561445/，如需轉載，請註明出處，否則將追究法律責任。
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