Server检查内存设置的查询

Question

请允许我知道如何从其中一个数据库(查询)检查Server中的以下当前设置

1. 内存中OLTP存储(GB)
2. 目标IOPS (64 KB)
3. 复制品数量

谢谢

Answer 1

格伦·贝里创建了一组最好的动态管理视图查询。当然，DMV根据Server版本的不同而有所不同。因此，您必须分别为2008年和2012年版本运行正确的查询。

存储：

SELECT physical_memory_in_use_kb/1024 AS [SQL Server Memory Usage (MB)],
       locked_page_allocations_kb/1024 AS [SQL Server Locked Pages Allocation (MB)],
       large_page_allocations_kb/1024 AS [SQL Server Large Pages Allocation (MB)], 
       page_fault_count, memory_utilization_percentage, available_commit_limit_kb, 
       process_physical_memory_low, process_virtual_memory_low
FROM sys.dm_os_process_memory WITH (NOLOCK) OPTION (RECOMPILE);

所有数据库属性，包括如果它们是副本

-- Recovery model, log reuse wait description, log file size, log usage size  (Query 31) (Database Properties)
-- and compatibility level for all databases on instance
SELECT db.[name] AS [Database Name], SUSER_SNAME(db.owner_sid) AS [Database Owner], db.recovery_model_desc AS [Recovery Model], 
db.state_desc, db.containment_desc, db.log_reuse_wait_desc AS [Log Reuse Wait Description], 
CONVERT(DECIMAL(18,2), ls.cntr_value/1024.0) AS [Log Size (MB)], CONVERT(DECIMAL(18,2), lu.cntr_value/1024.0) AS [Log Used (MB)],
CAST(CAST(lu.cntr_value AS FLOAT) / CAST(ls.cntr_value AS FLOAT)AS DECIMAL(18,2)) * 100 AS [Log Used %], 
db.[compatibility_level] AS [DB Compatibility Level], db.page_verify_option_desc AS [Page Verify Option], 
db.is_auto_create_stats_on, db.is_auto_update_stats_on, db.is_auto_update_stats_async_on, db.is_parameterization_forced, 
db.snapshot_isolation_state_desc, db.is_read_committed_snapshot_on, db.is_auto_close_on, db.is_auto_shrink_on, 
db.target_recovery_time_in_seconds, db.is_cdc_enabled, db.is_published, db.group_database_id, db.replica_id,
db.is_encrypted, de.encryption_state, de.percent_complete, de.key_algorithm, de.key_length
FROM sys.databases AS db WITH (NOLOCK)
INNER JOIN sys.dm_os_performance_counters AS lu WITH (NOLOCK)
ON db.name = lu.instance_name
INNER JOIN sys.dm_os_performance_counters AS ls WITH (NOLOCK)
ON db.name = ls.instance_name
LEFT OUTER JOIN sys.dm_database_encryption_keys AS de WITH (NOLOCK)
ON db.database_id = de.database_id
WHERE lu.counter_name LIKE N'Log File(s) Used Size (KB)%' 
AND ls.counter_name LIKE N'Log File(s) Size (KB)%'
AND ls.cntr_value > 0 
ORDER BY db.[name] OPTION (RECOMPILE);

I/O

-- Get I/O utilization by database (Query 35) (IO Usage By Database)
WITH Aggregate_IO_Statistics
AS (SELECT DB_NAME(database_id) AS [Database Name],
    CAST(SUM(num_of_bytes_read + num_of_bytes_written) / 1048576 AS DECIMAL(12, 2)) AS [ioTotalMB],
    CAST(SUM(num_of_bytes_read ) / 1048576 AS DECIMAL(12, 2)) AS [ioReadMB],
    CAST(SUM(num_of_bytes_written) / 1048576 AS DECIMAL(12, 2)) AS [ioWriteMB]
    FROM sys.dm_io_virtual_file_stats(NULL, NULL) AS [DM_IO_STATS]
    GROUP BY database_id)
SELECT ROW_NUMBER() OVER (ORDER BY ioTotalMB DESC) AS [I/O Rank],
        [Database Name], ioTotalMB AS [Total I/O (MB)],
        CAST(ioTotalMB / SUM(ioTotalMB) OVER () * 100.0 AS DECIMAL(5, 2)) AS [Total I/O %],
        ioReadMB AS [Read I/O (MB)], 
        CAST(ioReadMB / SUM(ioReadMB) OVER () * 100.0 AS DECIMAL(5, 2)) AS [Read I/O %],
        ioWriteMB AS [Write I/O (MB)], 
        CAST(ioWriteMB / SUM(ioWriteMB) OVER () * 100.0 AS DECIMAL(5, 2)) AS [Write I/O %]
FROM Aggregate_IO_Statistics
ORDER BY [I/O Rank] OPTION (RECOMPILE);

如果您想变得更花哨，并且真的看到关于您的服务器的东西，并对可能出错的事情发出警告，那么我将使用闪电战。这是大量的文档，所以只要运行和流口水的结果。

Answer 2

对于内存中的OLTP，我编写了一个脚本来评估内存优化的实例和数据库，名为sp_BlitzInMemoryOLTP，它是布伦特·奥扎尔的第一个应答工具包的一部分。

https://www.brentozar.com/thanks/welcome-sql-server-medical-school/

这里的文档：闪电战/