max_heap_table_size
[quote]TEMP tableS Current max_heap_table_size = 511 M Current tmp_table_size = 512 M Of 838 temp tables, 26% were created on disk Effective in-memory tmp_table_size is limited to max_heap_table_size. Perhaps you should increase your tmp_table_size and/or max_heap_table_size to reduce the number of disk-based temporary tables Note! BLOB and TEXT columns are not allow in memory tables. If you are u...
by gnubuntu - MySQL - 2011-03-02 23:06:35 阅读（16211） 回复（12）
On AIX 5.2 or later If the heap size is 3 GB or greater, LDR_CNTRL=maxDATA=0@DSA is set. If the heap size is between 2.3 GB and 3 GB, LDR_CNTR=maxDATA=0XB0000000@DSA is set. If the heap size is less than 2.3 GB, LDR_CNTR=maxDATA=0XA0000000@DSA is set. 也就是说如果在系统里设置了LDR_CNTRL=maxDATA=0@DSA 那么就可以用到3G以上内存了. On AIX 5.1 Although the very large address-space model is also ...
我搭建好主从复制之后，从机关闭状态 在主的/etc/my.cnf 里加入一行 max_binlog_size=20m 然后重启mysql服务 后来mysql>flush logs 了几次，发现我设置的 max_binlog_size 没有生效， 生成的log文件大小还是4k, 请问要怎么设置啊？
我create table出现如下warning： create table TE_ATTACHMENTS(ID numeric (10, 0) NOT NULL,DESCRIPTION varchar (2048) NULL,TYPE varchar (255) NULL,size varchar (255) NULL,PATH varchar (2048) NULL,HOST varchar (255) NULL,PORT varchar (255) NULL,STEP_ID numeric (10, 0) NULL,ROOT_ID numeric (10, 0) NULL,TEST_FATHER_ID numeric (10, 0) NULL) Command was executed successfully Warnings: ---> W (1): ...
9i新特性是SGA动态可调, 但又增加了个sga_max_size参数, 这是不是有点矛盾, 因为如果增加 db_cache_size, db_
请问heap size 2219K exceeds notification threshold 这句话是什么意思,是在什么时候会出现这样的情况?
我经常drop table 然后create table 再load数据,用extent 可以加快速度及改善性能,如何确定extent size知next size?
