首页 > Linux操作系统 > Linux操作系统 > ORA-00845: MEMORY_TARGET not supported on this system

ORA-00845: MEMORY_TARGET not supported on this system

原创 Linux操作系统 作者:chncaesar 时间:2013-11-24 13:31:42 0 删除 编辑
ORA-00845: MEMORY_TARGET not supported on this system
Cause: The MEMORY_TARGET parameter was not supported on this operating system or /dev/shm was not sized correctly on Linux.
Action: Refer to documentation for a list of supported operating systems. Or, size /dev/shm to be at least the SGA_MAX_SIZE on each Oracle instance running on the system.

I'm using an Oracle Linux 6.4 64 bit with 4GB RAM on VirtualBox, and change Oracle's memory configuration
alter system set MEMORY_MAX_TARGET = 2048M scope=spfile;
Apparently, there's no enough memory for Oracle to startup. As by default, Oracle Linux uses 50% of total RAM as /dev/shm. 
df -h | grep shm
tmpfs                 2.0G  284K  2.0G   1% /dev/shm

Increasing RAM size and bounce Linux should solve the issue
df -h | grep shm
tmpfs                 3.0G  112K  3.0G   1% /dev/shm

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

SQL*Plus: Release Production on Sun Nov 24 00:29:47 2013

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

Connected to an idle instance.

SQL> startup
ORACLE instance started.

Total System Global Area 2137886720 bytes
Fixed Size                  2215064 bytes
Variable Size            1610613608 bytes
Database Buffers          520093696 bytes
Redo Buffers                4964352 bytes
Database mounted.
Database opened.

来自 “ ITPUB博客 ” ,链接:,如需转载,请注明出处,否则将追究法律责任。

上一篇: Oracle nologging
请登录后发表评论 登录


  • 博文量
  • 访问量