出自我安装oracle10g：http://write.blog.csdn.net/postedit/70049581
情况如下：
[oracle@mygod1 ~]$ sqlplus / as sysdbaSQL*Plus: Release 10.2.0.1.0 - Production on Tue Apr 11 22:17:34 2017Copyright (c) 1982, 2005, Oracle. All rights reserved.Connected to an idle instance.SQL> SQL> SQL> SQL> startupORA-27125: unable to create shared memory segmentLinux-x86_64 Error: 1: Operation not permittedSQL> ho cat /proc/sys/vm/hugetlb_shm_group0SQL> exit
解决方法：
[root@mygod1 ~]# id oracleuid=501(oracle) gid=501(oinstall) groups=501(oinstall),502(dba)[root@mygod1 ~]# echo "502" >/proc/sys/vm/hugetlb_shm_group[root@mygod1 ~]# cat /proc/sys/vm/hugetlb_shm_group502[root@mygod1 ~]# [root@mygod1 ~]# exitlogout[oracle@mygod1 ~]$ sqlplus / as sysdbaSQL*Plus: Release 10.2.0.1.0 - Production on Tue Apr 11 22:22:46 2017Copyright (c) 1982, 2005, Oracle. All rights reserved.Connected to an idle instance.SQL> SQL> startupORACLE instance started.Total System Global Area 595591168 bytesFixed Size 2022600 bytesVariable Size 171967288 bytesDatabase Buffers 419430400 bytesRedo Buffers 2170880 bytesDatabase mounted.Database opened.SQL>
