如果你的 LANG=zh_CN.UTF-8

那么.bash_profile里设置 NLS_LANG='SIMPLIFIED CHINESE_CHINA.UTF8'

可用参数来自于 V$nls_valid_values

cpu: mips 32bit 650MHz

mem: ddr 2G

OS: NetBSD

PCI:MarVel SAS/SATA

Very Cool!

Cut down NetApp！

Large pool (LARGE_POOL_SIZE) (default is 0 bytes) -- the size in bytes of
                                   the large pool used in shared server systems
                     

Using hugetlb memory
====================

ATTENTION: The hugetlb configuration is absolutely independent from the
           Oracle VLM configuration. See Note 361323.1 for details.
（hugetlb 的使用与VLM是完全独立的！可以说是两码

这篇note虽然是说RHEL3的，但是原理是一样的，其中明确指出了一些原来我心存疑虑的地方。

HugeTLB

With RHEL 3, HugeTLB provides large page support within the CPU's TLB（前几篇blog已经提到，TLB其实就是一个CPU的内部功能，可以认为是硬件级的，和L1、L2 Cache地位等同，主要是为了提高性能，Intel与AMD的实现是不同的，详见前几篇链接） cache. This wil reduce the TLB (Translation Lookaside buffer) misses（与hits相反，就是不命中） as more memory is now mapped by each of the entry

http://blog.csdn.net/huxinghua/archive/2007/07/18/1697142.aspx

地址转换之TLB基础

http://blog.csdn.net/steganography/archive/2006/04/25/677222.aspx

这两天一直在研究这个问题，没办法，我无权改变已有的32位系统成64位，要不然也不会遇到这些问题。

前面已经提到317141.1和Werner Pushitz，

Werner说用ramfs不需要再配HugePages，我到目前还是没能理解HugePages到底是怎么一回事，

但是的确，不配HugePages，数据库是可以正常启动的。

作了实验，把ramfs换回tmpfs，然后启动数据库，启动失败，Out of Memory。

看来要搞清楚，必须和kernel扯上关系了！

Keep in mind that in RHEL3, shmfs allocate memory is pageable. Better to use tmpfs since there is no need to specify size.

ramfs is similar to shmfs, except that pages are not pageable/swappable. This approach provides the commonly desired effect.

The only difference here is that the ramfs pages are not backed by big pages.

When the shmfs/tmpfs,ramfs is available, Oracle server should know whether to use it or not. Need to use the parameter 'use_indirect_data_buffer