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DB Inspection Overview
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################ | |
# 1. Catalog of DB's | |
################ | |
EXEC sp_helpdb; | |
################ | |
# 2. Fetch file structure metadata | |
################ | |
SELECT | |
fg.name AS [File_Group_Name], | |
df.type, | |
df.name AS [FileAlias], | |
size/128.0 AS [FileSizeInMB], | |
[DataSizeInMB], | |
size/128.0 - [DataSizeInMB] AS EmptySpaceInMB, | |
df.physical_name AS [FilePath] | |
FROM sys.database_files df | |
LEFT JOIN sys.filegroups fg ON df.data_space_id=fg.data_space_id | |
CROSS APPLY (SELECT CAST(FILEPROPERTY(df.name, 'SpaceUsed') AS int)/128.0 AS [DataSizeInMB]) D; | |
################ | |
# 3. Default transaction type | |
################ | |
SELECT CASE transaction_isolation_level | |
WHEN 0 THEN 'Unspecified' | |
WHEN 1 THEN 'ReadUncommitted' | |
WHEN 2 THEN IIF(is_read_committed_snapshot_on = 1, 'ReadCommitted Snapshot', 'ReadCommitted') | |
WHEN 3 THEN 'Repeatable' | |
WHEN 4 THEN 'Serializable' | |
WHEN 5 THEN 'Snapshot' END AS TRANSACTION_ISOLATION_LEVEL | |
FROM sys.dm_exec_sessions | |
CROSS JOIN sys.databases AS d | |
where session_id = @@SPID AND d.database_id = DB_ID(); | |
################ | |
# 4. Size and Usage stats for each table | |
################ | |
WITH Sizings AS ( | |
SELECT object_id, | |
index_id, | |
SUM(sPTN.Rows) AS Rows, | |
SUM(total_pages) AS total_pages, | |
SUM(used_pages) AS used_pages, | |
SUM(data_pages) AS data_pages, | |
COUNT(1) AS Parts, | |
MAX(TMask) AS TMask | |
FROM sys.partitions AS sPTN | |
CROSS APPLY ( | |
SELECT | |
SUM(total_pages) AS total_pages, | |
SUM(used_pages) AS used_pages, | |
SUM(data_pages) AS data_pages, | |
SUM(DISTINCT POWER(2,type-1)) AS TMask | |
FROM sys.allocation_units a | |
WHERE a.container_id = sPTN.partition_id | |
GROUP BY a.container_id | |
) AU | |
GROUP BY object_id,index_id | |
) | |
,Stats AS ( | |
SELECT | |
[Schema], | |
sOBJ.name AS [Table], | |
Rows, | |
I.index_id AS [IndexID], | |
Parts, | |
TMask, | |
I.name AS [Index] | |
,TotalMB | |
,UsedMB | |
,DataMB | |
,IndexMB | |
,LastRead | |
,ius.last_user_update AS LastUpdate | |
,ius.user_lookups | |
,ius.user_scans | |
,ius.user_seeks | |
,ius.user_updates | |
FROM | |
sys.objects AS sOBJ | |
INNER JOIN sys.indexes AS I ON I.OBJECT_ID = sOBJ.object_id | |
INNER JOIN Sizings S ON sOBJ.object_id = S.object_id AND S.index_id = I.index_id | |
CROSS APPLY (SELECT | |
SCHEMA_NAME(sOBJ.schema_id) AS [Schema], | |
total_pages * 8 / 1024.0 AS TotalMB, | |
used_pages * 8 / 1024.0 AS UsedMB, | |
--index_id <2 -- 0:Heap, 1:Clustered | |
CASE WHEN I.index_id < 2 THEN S.used_pages * 8 / 1024.0 ELSE 0 END AS DataMB, | |
CASE WHEN I.index_id >= 2 THEN S.used_pages * 8 / 1024.0 ELSE 0 END AS IndexMB | |
) DAU | |
LEFT JOIN sys.dm_db_index_usage_stats ius ON ius.index_id = I.index_id AND ius.object_id = I.object_id | |
CROSS APPLY ( | |
SELECT MAX(v) LastRead | |
FROM (VALUES | |
(ius.last_user_lookup), | |
(ius.last_user_scan), | |
(ius.last_user_seek)) AS accessDates(v) | |
) AS DIU | |
WHERE sOBJ.type = 'U' | |
--ORDER BY [Table],IndexID | |
) | |
SELECT | |
[Schema], | |
[Table], | |
MAX(Rows) AS Rows, | |
SUM(TotalMB) AS [ReservedMB], | |
SUM(UsedMB) AS [UsedMB], | |
SUM(DataMB) AS [DataMB], | |
SUM(IndexMB) AS [IndexMB], | |
SUM(user_seeks + user_scans + user_lookups) AS ReadCount, | |
SUM(user_updates) AS WriteCount, | |
MAX(LastRead) AS LastRead, | |
MAX(LastUpdate) AS LastUpdate | |
FROM Stats S | |
GROUP BY [Schema],[Table] | |
ORDER BY [Table] | |
################### | |
# 5. Connection Logging "extended event session" | |
################### | |
CREATE EVENT SESSION [Connections] ON SERVER | |
ADD EVENT sqlserver.connection_accept( | |
ACTION(sqlos.task_address,sqlserver.client_app_name,sqlserver.client_hostname,sqlserver.server_instance_name,sqlserver.session_id,sqlserver.username) | |
WHERE ([sqlserver].[client_app_name]<>N'SQLServerCEIP')), | |
ADD EVENT sqlserver.connectivity_ring_buffer_recorded( | |
ACTION(sqlos.task_address,sqlserver.client_app_name,sqlserver.client_hostname,sqlserver.server_instance_name,sqlserver.session_id,sqlserver.username) | |
WHERE ([sqlserver].[client_app_name]<>N'SQLServerCEIP')), | |
ADD EVENT sqlserver.existing_connection(SET collect_database_name=(1) | |
ACTION(sqlos.task_address,sqlserver.server_instance_name,sqlserver.username) | |
WHERE ([sqlserver].[client_app_name]<>N'SQLServerCEIP')), | |
ADD EVENT sqlserver.login(SET collect_database_name=(1),collect_options_text=(1) | |
ACTION(sqlos.task_address,sqlserver.client_app_name,sqlserver.client_hostname,sqlserver.server_instance_name,sqlserver.session_id,sqlserver.username) | |
WHERE ([sqlserver].[client_app_name]<>N'SQLServerCEIP')), | |
ADD EVENT sqlserver.logout( | |
ACTION(sqlos.task_address,sqlserver.client_app_name,sqlserver.client_hostname,sqlserver.server_instance_name,sqlserver.session_id,sqlserver.username) | |
WHERE ([sqlserver].[client_app_name]<>N'SQLServerCEIP')) | |
ADD TARGET package0.event_file(SET filename=N'c:\xevents\connections') | |
WITH (MAX_MEMORY=4096 KB,EVENT_RETENTION_MODE=ALLOW_SINGLE_EVENT_LOSS,MAX_DISPATCH_LATENCY=30 SECONDS,MAX_EVENT_SIZE=0 KB,MEMORY_PARTITION_MODE=NONE,TRACK_CAUSALITY=ON,STARTUP_STATE=OFF) | |
GO |
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