oracle启动报错:ORA-00845: MEMORY_TARGET not supported on this system
2012-09-21 10:25
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今天启动oracle的时候,报错
[root@localhost ~]#su - oracle
[oracle@localhost ~]$lsnrctl start
lsnrctl: error while loading shared libraries: /u01/app/oracle/product/11.2.0/db_1/lib/libclntsh.so.11.1: cannot restore segment prot after reloc: Permission denied
解决办法:在root用户下执行以下命令
[root@localhost ~]# setenforce 0
[root@localhost ~]#su - oracle
[oracle@localhost ~]$lsnrctl start
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 20-SEP-2012 19:03:03
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Starting /u01/app/oracle/product/11.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Log messages written to /u01/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost.localdomain)(PORT=1521)))
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 20-SEP-2012 19:03:04
Uptime 0 days 0 hr. 0 min. 1 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Log File /u01/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost.localdomain)(PORT=1521)))
The listener supports no services
The command completed successfully
问题解决。
[oracle@localhost ~]$ sqlplus / as sysdba
SQL> startup
报错:ORA-00845: MEMORY_TARGET not supported on this system
问题定位:安装数据库时或者修改了参数MEMORY_TARGET或者SGA_TARGET的大小。
SGA参数的大小超过了操作系统/dev/shm的大小。
linux安装完后默认/dev/shm为物理内存的一半。
技术背景:linux大内存支持(Very Large Memory)中,使用了shmfs/tmpfs选项,ramfs也可以。
/dev/shm目录挂载类型为tmpfs,此共享内存用于交换,尤其对于大文件优势明显。
相对于ramfs,tmpfs的优势在于动态调整物理内存的占用,而ramfs不能调整。
/dev/shm与swap的区别:shm基于内存的文件系统,swap基于硬盘的文件系统。
解决方法:
1、调整MEMORY_TARGET(11G)或者SGA_TARGET(9i,10G)大小(不建议)。
2、调整/dev/shm的大小。
修改/etc/fstab,重新mount /dev/shm,然后就可以启动数据库了。
(1)查看/dev/shm 大小
df -k /dev/shm
Filesystem 1K-blocks Used Available Use% Mounted on
tmpfs 4089416 0 4089416 0% /dev/shm
(2)调整/dev/shm大小
vi /etc/fstab
#tmpfs /dev/shm tmpfs defaults 0 0
tmpfs /dev/shm tmpfs defaults,size=10240M 0 0
(3)重新加载
umount /dev/shm
mount /dev/shm
df -k /dev/shm
(4)登陆测试
sqlplus / as sysdba
至此问题得到解决。
####朋友的小店,全店批发价 男装,宅男朋友值得拥有 ,可以去看下哦。http://googleing.1688.com/
[root@localhost ~]#su - oracle
[oracle@localhost ~]$lsnrctl start
lsnrctl: error while loading shared libraries: /u01/app/oracle/product/11.2.0/db_1/lib/libclntsh.so.11.1: cannot restore segment prot after reloc: Permission denied
解决办法:在root用户下执行以下命令
[root@localhost ~]# setenforce 0
[root@localhost ~]#su - oracle
[oracle@localhost ~]$lsnrctl start
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 20-SEP-2012 19:03:03
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Starting /u01/app/oracle/product/11.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Log messages written to /u01/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost.localdomain)(PORT=1521)))
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 20-SEP-2012 19:03:04
Uptime 0 days 0 hr. 0 min. 1 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Log File /u01/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost.localdomain)(PORT=1521)))
The listener supports no services
The command completed successfully
问题解决。
[oracle@localhost ~]$ sqlplus / as sysdba
SQL> startup
报错:ORA-00845: MEMORY_TARGET not supported on this system
问题定位:安装数据库时或者修改了参数MEMORY_TARGET或者SGA_TARGET的大小。
SGA参数的大小超过了操作系统/dev/shm的大小。
linux安装完后默认/dev/shm为物理内存的一半。
技术背景:linux大内存支持(Very Large Memory)中,使用了shmfs/tmpfs选项,ramfs也可以。
/dev/shm目录挂载类型为tmpfs,此共享内存用于交换,尤其对于大文件优势明显。
相对于ramfs,tmpfs的优势在于动态调整物理内存的占用,而ramfs不能调整。
/dev/shm与swap的区别:shm基于内存的文件系统,swap基于硬盘的文件系统。
解决方法:
1、调整MEMORY_TARGET(11G)或者SGA_TARGET(9i,10G)大小(不建议)。
2、调整/dev/shm的大小。
修改/etc/fstab,重新mount /dev/shm,然后就可以启动数据库了。
(1)查看/dev/shm 大小
df -k /dev/shm
Filesystem 1K-blocks Used Available Use% Mounted on
tmpfs 4089416 0 4089416 0% /dev/shm
(2)调整/dev/shm大小
vi /etc/fstab
#tmpfs /dev/shm tmpfs defaults 0 0
tmpfs /dev/shm tmpfs defaults,size=10240M 0 0
(3)重新加载
umount /dev/shm
mount /dev/shm
df -k /dev/shm
(4)登陆测试
sqlplus / as sysdba
至此问题得到解决。
####朋友的小店,全店批发价 男装,宅男朋友值得拥有 ,可以去看下哦。http://googleing.1688.com/
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