SQL Server DBA 일상 검사 상용 SQL

--          
exec sp_helpdb  

  
--          
select name,  
       user_access_desc,           --        
       state_desc,                 --       
       recovery_model_desc,        --      
       page_verify_option_desc,    --       
       log_reuse_wait_desc         --        
from sys.databases  

  
--        :       ，     ，    ，       
use test  
go  

exec sp_spaceused    
go  

  

--  @updateusage = 'true',   dbcc updateusage  
exec sp_spaceused  @updateusage = 'true'  

  
--      ,                    
DBCC UPDATEUSAGE('test')  

--                  
sp_helpfile   

  

--           、  、  、    
select db_name(database_id) dbname,  
       type_desc,      --        
       name,           --         
       physical_name,  --         
       state_desc,     --      
       size * 8.0/1024 as '    （MB）'          
from sys.master_files  

  

--  extent    ，      ，    , TotalExtents*64/1024,   MB  
--        tempdb     ，          
dbcc showfilestats  

--           、  、  、    
select db_name(database_id) dbname,  
       type_desc,      --        
       name,           --         
       physical_name,  --         
       state_desc,     --      
       size * 8.0/1024 as '    （MB）'          
from sys.master_files  
where type_desc = 'LOG'  

  

--           ,       
dbcc sqlperf(logspace)  

--        I/O    ,        
    select database_id,  
           file_id,  
           file_handle,           --windows      
           sample_ms,             --               

           num_of_reads,  
           num_of_bytes_read,  
           io_stall_read_ms,      --         

           num_of_writes,  
           num_of_bytes_written,  
           io_stall_write_ms,  

           io_stall,              --        I/O          
           size_on_disk_bytes     --                         

    from sys.dm_io_virtual_file_stats(db_id('test'),   --   id  
                                       1 )  --    id                                         
    union all  

    select database_id,  
           file_id,  
           file_handle,           --windows      
           sample_ms,             --               

           num_of_reads,  
           num_of_bytes_read,  
           io_stall_read_ms,      --         

           num_of_writes,  
           num_of_bytes_written,  
           io_stall_write_ms,  

           io_stall,              --        I/O          
           size_on_disk_bytes     --                  
    from sys.dm_io_virtual_file_stats( db_id('test'),   --   id  
                                       2 )  --    id  

--     :      ,    ，    ，    ，       
exec sp_spaceused @objname ='temp_lock'  

  
--  :        
exec sp_spaceused @objname ='temp_lock',  
                  @updateusage ='true'  

  

--    ，      ，       
/*======================================================  
                 

sys.dm_db_partition_stats            (    )          
========================================================*/     
select o.name,  
       sum(p.reserved_page_count) as reserved_page_count, --   ，        

       sum(p.used_page_count) as used_page_count,         --    ，        

       sum(case when p.index_id <2   
                     then p.in_row_data_page_count +   
                          p.lob_used_page_count +   
                          p.row_overflow_used_page_count  
                else p.lob_used_page_count +   
                     p.row_overflow_used_page_count  
           end) as data_pages,  --   ,      、    lob  、           

       sum(case when p.index_id < 2   
                     then p.row_count  
                else 0  
           end) as row_counts   --    ，         ，              

from sys.dm_db_partition_stats p  
inner join sys.objects o  
        on p.object_id = o.object_id   
where p.object_id= object_id('  ')  
group by o.name     

   

--      ，     ，             
--                            
--  ：    、   (   )、                      
dbcc showcontig(temp_lock)  

  

--SQL Server           ，    
select *  
from sys.dm_db_index_physical_stats(  
        db_id('test'),                      --   id  
        object_id('test.dbo.temp_lock'),    --  id  
        null,                               --  id  
        null,                               --     

        'limited'   --default,null,'limited','sampled','detailed',   'limited'  
                    --'limited'      ，       ,         ,                 
                    --'sampled'      、       1%       ，    1000 ，   'detailed'  'sampled'  
                    --'detailed'        ,          
    )  

  

--              
use test  
go  

if OBJECT_ID('extentinfo') is not null  
    drop table extentinfo  
go  

create table extentinfo   
(   [file_id] smallint,   
    page_id int,   
    pg_alloc int,                 
    ext_size int,                  
    obj_id int,                    

    index_id int,                  
    partition_number int,  
    partition_id bigint,  
    iam_chain_type varchar(50),    
    pfs_bytes varbinary(10)   
)   
go   

  
/*====================================================================  
                      ，             

    :  DBCC EXTENTINFO（dbname,tablename,indexid）  

DBCC EXTENTINFO('[test]','extentinfo',0)  
======================================================================*/  
insert extentinfo   
exec('dbcc extentinfo(''test'') ')  
go  

  
--           
select  file_id,   
        obj_id,               --  ID  
        index_id,             --  id  

        page_id,              --           ,                   
        pg_alloc,             --             

        ext_size,             --            

        partition_number,  
        partition_id,  
        iam_chain_type,       --IAM   :    ,     ,       
        pfs_bytes   
from extentinfo  
order by file_id,  
         OBJ_ID,  
         index_id,  
         partition_id,  
         ext_size  

  
/*=====================================================================================================  
             ,                    ,        ,  
        .  

1.            

2.  pg_alloc ext_size ，                        ，  
           ，                          ，  
            (      )，    2   (   2  )，  
          2         1.  
========================================================================================================*/  
select file_id,  
       obj_id,   
       index_id,   
       partition_id,   
       ext_size,   

       count(*) as '      ',   
       sum(pg_alloc) as '       ',   

       ceiling(sum(pg_alloc) * 1.0 / ext_size) as '        ',   
       ceiling(sum(pg_alloc) * 1.0 / ext_size) / count(*) * 100.00 as '        /       '   

from extentinfo   
group by file_id,  
         obj_id,   
         index_id,  
         partition_id,   
         ext_size   
having ceiling(sum(pg_alloc)*1.0/ext_size) < count(*)     
--  :         <       ,        100%   
order by partition_id, obj_id, index_id, [file_id]