SGA之SQL
--查看诊断位置信息select * from v$diag_info;
--查看sga中内存分配信息
select * from sys.x$ksmfs;
--查看内存块还剩余多少
select pool,name,bytes/1024/1024 MB from v$sgastat where name='free memory';
--查看共享池的使用情况比率
select to_number(v$parameter.value) value,v$sgastat.bytes/1024/1024 "v$sgastat MB",
(v$sgastat.bytes/v$parameter.value)*100 "percent free"
from v$sgastat,v$parameter where v$sgastat.name='free memory' and v$parameter.name='shared_pool_size'
and v$sgastat.pool='shared pool';
--查看SGA内各个易失存储器块的情况
select * from v$sga_dynamic_components
--查询动态调整SGA内存块还有多少可使用空间
select * from v$sga_dynamic_free_memory;
--SGA信息
select * from v$sgainfo
--可根据此视图调整SGA大小
select * from v$sga_target_advice
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