今天在DELL服务器的Redhat 6.4上安装Oracle10.2.0.4,用sqlplus 登陆数据库，会出现如下的提示：
map size mismatch; abort: Success，不过其他的功能都正常，只是有这个提示
解决方法：
alter system set "_enable_NUMA_optimization"= false scope=spfile;
alter system set "_db_block_numa"=1 scope=spfile;
SQL>shutdown immediate
SQL>startup
col name for a40
col value for a40
col describ for a40
set linesize 130
NUMA是CPU的一种技术，开启需要硬件的支持，关于这两个参数的解释：
SELECT x.ksppinm NAME, y.ksppstvl VALUE, x.ksppdesc describ
FROM SYS.x$ksppi x, SYS.x$ksppcv y
WHERE x.inst_id = USERENV ('Instance')
AND y.inst_id = USERENV ('Instance')
AND x.indx = y.indx
AND upper(x.ksppinm) like '%NUMA%';
NAME VALUE DESCRIB
---------------------------------------- ---------------------------------------- ----------------------------------------
_rm_numa_sched_enable FALSE Is Resource Manager (RM) related NUMA sc
heduled policy enabled
_NUMA_pool_size Not specified aggregate size in bytes of NUMA pool
_enable_NUMA_optimization TRUE Enable NUMA specific optimizations
_NUMA_instance_mapping Not specified Set of nodes that this instance should r
un on
_rm_numa_simulation_pgs 0 number of PGs for numa simulation in res
ource manager
NAME VALUE DESCRIB
---------------------------------------- ---------------------------------------- ----------------------------------------
_rm_numa_simulation_cpus 0 number of cpus per PG for numa simulatio
n in resource manager
_db_block_numa 2 Number of NUMA nodes
7 rows selected.
另外有需要云服务器可以了解下创新互联cdcxhl.cn，海内外云服务器15元起步，三天无理由+7*72小时售后在线，公司持有idc许可证，提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案，具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势，专为企业上云打造定制，能够满足用户丰富、多元化的应用场景需求。
