dbca-silent-responsefile建庫由於tmpfs太小報錯ORA-27102:outofmemory

錯誤信息:

[oracle@db01 ~]$ dbca -silent -responsefile dbca.rsp 
Copying database files
1% complete
2% complete
4% complete
12% complete
100% complete
Look at the log file "/DBSoft/oracle/cfgtoollogs/dbca/woo/woo.log" for further details.
[oracle@db01 ~]$ cat /DBSoft/oracle/cfgtoollogs/dbca/woo/woo.log
SGA size can not be greater than maximum shared memory segment size (0). Refer to Oracle installation guide to configure your operating system kernel parameters.
Copying database files
DBCA_PROGRESS : 1%
DBCA_PROGRESS : 2%
ORA-27102: out of memory


DBCA_PROGRESS : 4%
ORA-01034: ORACLE not available


DBCA_PROGRESS : 12%
ORA-01034: ORACLE not available


DBCA_PROGRESS : 100%

檢查alert告警日志：

[oracle@db01 ~]$ cat $ORACLE_BASE/diag/rdbms/woo/woo/trace/alert_woo.log 
Thu Jun 11 22:46:03 2015
Starting ORACLE instance (normal)
WARNING: The system does not seem to be configured
optimally. Creating a segment of size 0x0000000000800000
failed. Please change the shm parameters so that
a segment can be created for this size. While this is
not a fatal issue, creating one segment may improve
performance

問題分析:

從上面的警告日志中的一個告警信息告訴我們這個系統在啟動的時候需要創建一個大小為0x0000000000800000 size的segment失敗，雖然不是一個致命的問題，但是同時告訴我們去修改shm參數可以提高性能。

問題處理：

既然問題已經弄清楚了，那麼下一步我們解決該問題就很簡單了，擴大/de/shm 的值

1、首先查看下大小是多少:

[oracle@db01 ~]$ df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_db01-lv_root
                       35G  8.7G   25G  27% /
tmpfs                 947M     0  947M   0% /dev/shm
/dev/sda1             485M   35M  425M   8% /boot

2、手動擴大tmpfs的大小

[root@db01 ~]# mount tmpfs /dev/shm -t tmpfs -o size=8g


[root@db01 ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_db01-lv_root
                       35G  8.7G   25G  27% /
tmpfs                 8.0G     0  8.0G   0% /dev/shm
/dev/sda1             485M   35M  425M   8% /boot
tmpfs                 8.0G     0  8.0G   0% /dev/shm

3、重新執行安裝

[oracle@db01 ~]$ dbca -silent -responsefile dbca.rsp 
Cleaning up failed steps
5% complete
Copying database files
7% complete
9% complete
16% complete
23% complete
30% complete
41% complete
Creating and starting Oracle instance
43% complete
48% complete
53% complete
57% complete
58% complete
59% complete
62% complete
64% complete
Completing Database Creation
68% complete
71% complete
75% complete
85% complete
96% complete
100% complete
Look at the log file "/DBSoft/oracle/cfgtoollogs/dbca/woo/woo7.log" for further details.
[oracle@db01 ~]$ 




[oracle@db01 ~]$ netca /silent /responsefile netca.rsp 


Parsing command line arguments:
    Parameter "silent" = true
    Parameter "responsefile" = netca.rsp
Oracle Net Configuration Assistant could not find the Response File at the given location.
Oracle Net Services configuration failed.  The exit code is 1

4、完成之後將tmpfs最終的大小永久寫入到/etc/fstab文件中

[oracle@db01 ~]$ cat /etc/fstab 


#
# /etc/fstab
# Created by anaconda on Tue Jun  9 19:17:12 2015
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/vg_db01-lv_root /                       ext4    defaults        1 1
UUID=9ba8ae31-c918-4ad0-8408-e9e0a7d0beb4 /boot                   ext4    defaults        1 2
/dev/mapper/vg_db01-lv_swap swap                    swap    defaults        0 0
tmpfs                   /dev/shm                tmpfs   size=8g        0 0		-------修改這行內容將defaults改為需要擴展的大小size=8g 即可
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0