在Oracle11gRAC環(huán)境下如何處理ORA-00845錯誤-創(chuàng)新互聯(lián)

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因機房空調(diào)停電原因機房溫度過高而導致兩個節(jié)點的Oracle11G RAC數(shù)據(jù)庫服務器自動關機。等啟動服務器后,發(fā)現(xiàn)數(shù)據(jù)庫起不來,如題如下:

[oracle@DB-2 ~]$ sqlplus  / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Wed Aug 2 10:35:31 2017

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

Connected to an idle instance.

SQL> startup

ORA-00845: MEMORY_TARGET not supported on this system

SQL> exit

原因為初始化參數(shù)MEMORY_TARGET或MEMORY_MAX_TARGET不能大于共享內(nèi)存(/dev/shm),為了解決這個問題,要不調(diào)整Oracle初始化參數(shù)要不調(diào)大/dev/shm。

Oracle原來參數(shù)文件相關參數(shù)文件如下:

orcl2.memory_max_target=68719476736

orcl1.memory_max_target=68719476736

*.memory_target=30558650368

orcl2.memory_target=68719476736

orcl1.memory_target=6871947673

操作系統(tǒng)的共享內(nèi)存(/dev/shm)參數(shù)如下:

[oracle@DB-1 shm]$ cat /etc/fstab | grep tmpfs

tmpfs                   /dev/shm                tmpfs   defaults,size=131072M        0 0

通過vi /etc/fstab命令分別修改兩個節(jié)點的size為64G,如下:

tmpfs                   /dev/shm                tmpfs   defaults,size=64G       0 0

[oracle@CRXJ-DB-1 ~]$ df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/mapper/vg_crxjdb1-LogVol02

                      2.3T  1.3T  882G  60% /

tmpfs                  64G   34G   30G  54% /dev/shm

/dev/sda1             194M   33M  152M  18% /boot

/dev/mapper/vg_crxjdb1-LogVol01

                      9.9G  151M  9.2G   2% /tmp

重新嘗試啟動數(shù)據(jù)庫,還是報ORA-00845錯誤,因此對將初始化參數(shù)文件spfile導出成pfile后進行編輯并重新生成spfile,過程如下:

[oracle@DB-1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Wed Aug 2 10:36:33 2017

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

Connected to an idle instance.

SQL> create spfile from pfile='/home/oracle/pfile_yu.ora';

File created.

Elapsed: 00:00:00.21

編輯相關內(nèi)容如下:

orcl2.memory_max_target=64424509440

orcl1.memory_max_target=64424509440

*.memory_target=64424509440

orcl2.memory_target=64424509440

orcl1.memory_target=64424509440

重新生成spfile并啟動數(shù)據(jù)庫:

SQL> create spfile from pfile='/home/oracle/pfile_yu.ora';

File created.

Elapsed: 00:00:00.18

SQL> exit

Disconnected

[oracle@DB-1 ~]$ sqlplus  / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Wed Aug 2 10:40:30 2017

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

Connected to an idle instance.

SQL> startup

ORACLE instance started.

Total System Global Area 6.4137E+10 bytes

Fixed Size                  2219552 bytes

Variable Size            3.8118E+10 bytes

Database Buffers         2.5770E+10 bytes

Redo Buffers              247029760 bytes

Database mounted.

Database opened.

SQL>

數(shù)據(jù)庫啟動成功。

在另一個節(jié)點也進行類似操作,兩個節(jié)點數(shù)據(jù)庫都正常啟動并運行,應用能正常訪問了。

注:在節(jié)點一生成完spfile后,在節(jié)點二上企圖啟動數(shù)據(jù)庫,但還是報錯:

[oracle@DB-2 ~]$ sqlplus  / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Wed Aug 2 10:35:31 2017

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

Connected to an idle instance.

SQL> startup

ORA-00845: MEMORY_TARGET not supported on this system

查看操作系統(tǒng)信息:

[oracle@DB-2 ~]$ df -h|grep shm

tmpfs                  64G  397M   63G   1% /dev/shm

[oracle@DB-2 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Wed Aug 2 10:46:28 2017

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

Connected to an idle instance.

SQL> create pfile='/home/oracle/pfile_yu.ora' from  spfile; 

create pfile='/home/oracle/pfile_yu.ora' from  spfile

*

ERROR at line 1:

ORA-01565: error in identifying file '?/dbs/spfile@.ora'

ORA-27037: unable to obtain file status

Linux-x86_64 Error: 2: No such file or directory

Additional information: 3

對于以上問題,從節(jié)點一把參數(shù)文件復制過來后直接生成spfile

[oracle@DB-1 ~]$ scp pfile_yu.ora DB-2:/home/oracle/pfile_yu.ora                                                                                                                 100% 1929     1.9KB/s   00:00   

[oracle@DB-2 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Wed Aug 2 10:54:48 2017

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

Connected to an idle instance.

SQL> create spfile from pfile='/home/oracle/pfile_yu.ora';

File created.

SQL> startup

ORACLE instance started.

Total System Global Area 6.4137E+10 bytes

Fixed Size                  2219552 bytes

Variable Size            3.3554E+10 bytes

Database Buffers         3.0333E+10 bytes

Redo Buffers              247029760 bytes

Database mounted.

Database opened.

SQL> exit

以上是“在Oracle11g RAC環(huán)境下如何處理ORA-00845錯誤”這篇文章的所有內(nèi)容,感謝各位的閱讀!相信大家都有了一定的了解,希望分享的內(nèi)容對大家有所幫助,如果還想學習更多知識,歡迎關注創(chuàng)新互聯(lián)-成都網(wǎng)站建設公司行業(yè)資訊頻道!

分享名稱:在Oracle11gRAC環(huán)境下如何處理ORA-00845錯誤-創(chuàng)新互聯(lián)
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