about shared memory 2G, 4G
I am reading the oracle official 11gr2 quick install guide.There is one problem I am not sure about it: in oracle, we are adviced to install oracle 11gr2 by using more than 2GB memory. And now in 11g, oracle is using shared memory management.
and I issue the command: df -h /dev/shm <font size="1">login as: root
root@192.168.1.110's password:
Last login: Sun Oct 5 01:37:25 2014 from 192.168.1.13
# df -h /dev/shm
Filesystem Size Used Avail Use% Mounted on
tmpfs 2.0G 0 2.0G 0% /dev/shm
#</font>
My virtual Machine now is having 4GB memory.
so I wonder if oracle will only use 2GB which is from /dev/shm by using AMM, or it will enlarge the memory to 4GB as maximum?
FYI
解决Linux上11g的ORA-00845错误
http://www.askmaclean.com/archives/%E8%A7%A3%E5%86%B3linux%E4%B8%8A11g%E7%9A%84ora-00845%E9%94%99%E8%AF%AF.html $ oerr ora 845
00845, 00000, "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 syste
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