标签:rac
查看“_gc”开头的隐藏参数值:
set linesize 333 col name for a35 col description for a66 col value for a30 SELECT i.ksppinm name, i.ksppdesc description, CV.ksppstvl VALUE FROM sys.x$ksppi i, sys.x$ksppcv CV WHERE i.inst_id = USERENV (‘Instance‘) AND CV.inst_id = USERENV (‘Instance‘) AND i.indx = CV.indx AND i.ksppinm LIKE ‘/_gc%‘ ESCAPE ‘/‘ ORDER BY REPLACE (i.ksppinm, ‘_‘, ‘‘);
--11g RAC关闭DRM特性
alter system set "_gc_policy_time"=0 scope=spfile sid=‘*‘; alter system set "_gc_undo_affinity"=false scope=spfile sid=‘*‘;
--10g RAC关闭DRM特性
alter system set "_gc_affinity_time"=0 scope=spfile sid=‘*‘; alter system set "_gc_undo_affinity"=FALSE scope=spfile sid=‘*‘;
参考老熊的文章,http://www.laoxiong.net/problem-caused-by-drm.html
10g RAC可以设置另外2个动态的隐含参数,来达到从”事实上“关闭DRM的目的:
_gc_affinity_limit=250 _gc_affinity_minimum=10485760
标签:rac
原文地址:http://12953214.blog.51cto.com/12943214/1942940