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  • 【基本优化实践】【1.3】最大内存参数限制

    开启参数优化 

    exec sp_configure 'show advanced options', 1 reconfigure;
    exec sp_configure 'xp_cmdshell', 1 reconfigure;
    exec sp_configure 'Ad Hoc Distributed Queries', 1 reconfigure;
    exec sp_configure 'show advanced options', 0 reconfigure;
    GO

    /* 规则
        如果16G及以下,给2G给操作系统
        如果32G及以下,给4G给操作系统
        如果32G以上(不含32G),给内存的10%给系统
    */
    
    use master
    go
    
    declare @physical_memory int
    declare  @TempTable table
    (
    [Index] VARCHAR(2000) ,
    [Name] VARCHAR(2000) ,
    [Internal_Value] VARCHAR(2000) ,
    [Character_Value] VARCHAR(2000)
    );
    INSERT INTO @TempTable
    EXEC xp_msver;
    SELECT @physical_memory=cast(Internal_Value as int)
    FROM @TempTable
    WHERE Name = 'PhysicalMemory';
    print @physical_memory
    if @physical_memory<=1024*16
        set @physical_memory=@physical_memory-1024*2
    else if @physical_memory<=1024*32
            set @physical_memory=@physical_memory-1024*4
        else
            set @physical_memory=@physical_memory*0.9
    
    print @physical_memory
    EXEC sys.sp_configure N'max server memory (MB)',@physical_memory
    GO
    RECONFIGURE WITH OVERRIDE
    GO
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  • 原文地址:https://www.cnblogs.com/gered/p/11063920.html
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