日期:2014-05-16  浏览次数:20472 次

ORACLE10g 自动SGA管理(一)
SGA

-- 数据库块缓冲高速缓存 (db_cache_size)
-- 共享池 (shared_pool_size)
-- Java 池 (java_pool_size)
-- 大型池 (large_pool_size)

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自动共享内存管理示例配置


SGA_TARGET(控制SGA的总大小) 设置为非零值
SGA

shared_pool_size = 0
large_pool_size = 0
java_pool_size = 0
db_cache_size = 0 

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SQL> select pool, sum(bytes)/1024/1024 Mbytes from v$sgastat group by pool;
 
POOL             MBYTES
------------ ----------
             303.996315
java pool             4
shared pool  102.490440
large pool           12
 
DB_CACHE_SIZE
SQL> select current_size from v$buffer_pool;
 
CURRENT_SIZE
------------
         296

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关闭自动大小调整 
SGA_TARGET = 0

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