SQLServer 维护脚本分享（08）临时数据库（tempdb）

dbcc sqlperf(logspace)    --各数据库日志大小及使用百分比

dbcc loginfo    --查看当前数据库的虚拟日志文件

--临时表'Tempdb'最近使用情况
SELECT t1.session_id
,t1.internal_objects_alloc_page_count*8.0/1024 as internal_objects_alloc_MB
,t1.internal_objects_dealloc_page_count *8.0/1024 as internal_objects_dealloc_MB
,t1.user_objects_alloc_page_count*8.0/1024 as user_objects_alloc_MB
,t1.user_objects_dealloc_page_count*8.0/1024 as user_objects_dealloc_MB
,t3.login_name,t3.status,t3.total_elapsed_time
from sys.dm_db_session_space_usage  t1
inner join sys.dm_exec_sessions as t3
on t1.session_id = t3.session_id
where (t1.internal_objects_alloc_page_count>0
or t1.user_objects_alloc_page_count >0
or t1.internal_objects_dealloc_page_count>0
or t1.user_objects_dealloc_page_count>0)
ORDER BY internal_objects_alloc_page_count DESC

--'Tempdb'存储对象使用情况
Select 'Tempdb' as DB, getdate() as Time,
    SUM (user_object_reserved_page_count)*8 as user_objects_kb,
    SUM (internal_object_reserved_page_count)*8 as internal_objects_kb,
    SUM (version_store_reserved_page_count)*8  as version_store_kb,
    SUM (unallocated_extent_page_count)*8 as freespace_kb
From sys.dm_db_file_space_usage
Where database_id = 2  

--使用计数器(SQLServer:Transactions )监视 tempdb 中行版本存储区的大小和增长速率
SELECT * FROM sys.dm_os_performance_counters
where counter_name='Free Space in tempdb (KB)'
or counter_name='Version Store Size (KB)'  

--tempdb大小和增长速率
SELECT
    name AS FileName,
    size*1.0/128 AS FileSizeinMB,
    CASE max_size
        WHEN 0 THEN 'Autogrowth is off.'
        WHEN -1 THEN 'Autogrowth is on.'
        ELSE 'Log file will grow to a maximum size of 2 TB.'
    END,
    growth AS 'GrowthValue',
    'GrowthIncrement' =
        CASE
            WHEN growth = 0 THEN 'Size is fixed and will not grow.'
            WHEN growth > 0 AND is_percent_growth = 0
                THEN 'Growth value is in 8-KB pages.'
            ELSE 'Growth value is a percentage.'
        END
FROM tempdb.sys.database_files;
GO