Troubleshooting ORA-27154 ORA-27300 ORA-27301 ORA-27302

Troubleshooting ORA-27154 ORA-27300 ORA-27301 ORA-27302

这个错误是操作系统设置的问题，测试过程如下。

[oracle@gtlions ~]$ sqlplus "/as sysdba"

SQL*Plus: Release 10.2.0.5.0 - Production on Sat Feb 4 23:47:02 2012

Copyright (c) 1982, 2010, Oracle. All Rights Reserved.

Connected to an idle instance.

SQL> startup

ORA-27154: post/wait create failed

ORA-27300: OS system dependent operation:semget failed with status: 28

ORA-27301: OS failure message: No space left on device

ORA-27302: failure occurred at: sskgpsemsper

SQL> !oerr ora 27154

27154, 0000, "post/wait create failed"

// *Cause: internal error, multiple post/wait creates attempted simultaneously

// *Action: check errno and contact Oracle Support

SQL>

[root@gtlions ~]# /sbin/sysctl -p

net.ipv4.ip_forward = 0

net.ipv4.conf.default.rp_filter = 2

net.ipv4.conf.default.accept_source_route = 0

kernel.sysrq = 0

kernel.core_uses_pid = 1

net.ipv4.tcp_syncookies = 1

kernel.msgmnb = 65536

kernel.msgmax = 65536

kernel.shmmax = 4294967295

kernel.shmall = 268435456

fs.aio-max-nr = 1048576

fs.file-max = 6815744

net.ipv4.ip_local_port_range = 9000 65500

net.core.rmem_default = 262144

net.core.rmem_max = 4194304

net.core.wmem_default = 262144

net.core.wmem_max = 1048586

kernel.sem = 250 100

注意上面的最后一个参数kernel.sem = 250 100这个不正常的值，现在把这个参数该成正常值。

[root@gtlions ~]# vi /etc/sysctl.conf

[root@gtlions ~]# /sbin/sysctl -p

net.ipv4.ip_forward = 0

net.ipv4.conf.default.rp_filter = 2

net.ipv4.conf.default.accept_source_route = 0

kernel.sysrq = 0

kernel.core_uses_pid = 1

net.ipv4.tcp_syncookies = 1

kernel.msgmnb = 65536

kernel.msgmax = 65536

kernel.shmmax = 4294967295

kernel.shmall = 268435456

fs.aio-max-nr = 1048576

fs.file-max = 6815744

net.ipv4.ip_local_port_range = 9000 65500

net.core.rmem_default = 262144

net.core.rmem_max = 4194304

net.core.wmem_default = 262144

net.core.wmem_max = 1048586

kernel.sem = 250 32000 100 128

[root@gtlions ~]#

来看下是否可以正常启动数据库了。

[oracle@gtlions ~]$ sqlplus "/as sysdba"

SQL*Plus: Release 10.2.0.5.0 - Production on Sun Feb 5 00:00:39 2012

Copyright (c) 1982, 2010, Oracle. All Rights Reserved.

Connected to an idle instance.

SQL> startup

ORACLE instance started.

Total System Global Area 167772160 bytes

Fixed Size 1272600 bytes

Variable Size 62915816 bytes

Database Buffers 100663296 bytes

Redo Buffers 2920448 bytes

Database mounted.

Database opened.

SQL>

吼吼，起来了！

-The End-