Update Stats
Aug 8, 2007Has anyone noticed a performance improvement during trading hours when they replaced sp_updatestats with UPDATE STATISTICS FULLSCAN in their nightly maintenance?
Or is it negligible?
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Update Stats
Aug 11, 2004Is it true that Update Statistics perform record commits if a query is outstanding?
View 4 Replies View RelatedIs It Possible To Mass Update Stats?
Apr 17, 2006SQL Server 2000 on Win2k
I'm fairly new to SQL Server and I'm just wondering if it's possible to Update Statistice for all indexes somehow? I'm looking at the Update Statistics command and it doesn't seem to be possible.
The situation we have is a reporting DB that basically has all it's tables truncated and remade every night by some DTS jobs that import from another datasource and change the data and build some denormalzed tables etc.
Some of the large Insert operations go from taking 8 mins to taking several hours sometimes and updating the stats seems to fix the problem for a while. So I'd like to make sure the optimizer has all the latest stats for all tables.
Any other advice would be appreciated.
Cheers.
Duration Of Auto Update Stats
Mar 10, 2003Does anyone know how to tell how long it took for an auto update statistics to run? I looked under DBCC Show_Statistics and it shows the time the stats were last updated, but not how long it took to update them. Thanks.
View 2 Replies View RelatedIndexing And Update Stats Script
Mar 12, 2015I am having the following errors with the script below
Msg 102, Level 15, State 1, Line 44
Incorrect syntax near '?'.
Msg 319, Level 15, State 1, Line 47
Incorrect syntax near the keyword 'with'. If this statement is a common table expression, an xmlnamespaces clause or a change tracking context clause, the previous statement must be terminated with a semicolon. it also does not seem to loop around each db
DECLARE @commandNVARCHAR(MAX)
CREATE TABLE #worktable
(
[Database]SYSNAME
,SchemaNameSYSNAME
,ObjectNameSYSNAME
,StatsNameSYSNAME
,ColNameSYSNAME
[code]....
SQL 2005 Performance And Update Stats
Nov 6, 2007Recently we moved few of our databases from SQL 2000 to SQL 2005 (SP 2) using backup and restore. After the restore I did Reindex and update stats on the databases. Since then we have observed performance issues on SQL 2005 databases but this performance problem vanishes the moment we run (sp_updatestats). Is this a problem with SQL 2005 that we have to run sp_updatestats 2 times a days or 3 times a day. In SQL 2000 we ran it only Once a week and still we never had any performance issues. Is there any config change we need to do to fix this problem in SQL 2005?
Thanks !
Does DBCC DBREINDEX Update Stats?
Sep 26, 2005(Assuming SQL Server 2000, auto create statistics on, auto updatestatistics on.)DoesDBCC DBREINDEX(<tablename>)update statistics? If yes, are the statistics equivalent to thosethat would be produced by:UPDATE STATISTICS <tablename> WITH FULLSCAN
View 1 Replies View RelatedAuto Update Stats Causing Blocking
Mar 10, 2003Recently a production server suffered a critical blocking period and I wanted to know if I could solicit some input. It seems that a stored procedure was in the middle of recompiling while and auto update statistics started. This caused blocking for like an hour on the
single object (stored procedure) that was originally called. The table that the update occurred on and that the
stored procedure is reading form is quite large. It is 2 mil rows and about 140 columns wide. Some info from
sysprocesses is below. The table alone takes up almost 4GB of space, when looking at sp_spaceused. I have some
questions.
1. Can the update statistics for a '_WA%' stats cause
blocking on a table?
2. Does an update stats on an index survive a restart of
SQL server? We tried restarting, but the blocking did not
end.
3. If the stored procedure is running under a compile, can
the server automatically start an update stats and cause
the stored procedure to wait?
4. Can the server automatically start an update stats on
more than one column stats at a time, causing one to be
blocked by the other?
5. We had never seen this issue before going to SQL2K
clustering. Is this something specific to SQL2K and not
SQL7 ?
Thanks for your input.
John Lee
This is the lock info for the blocking processes.
spid dbid ObjId IndId Type Resource Mode Status name
------ ------ ----------- ------ ---- ---------------- -------- ------ -------------------------
142 7 2 1 KEY (6f00035ef42b) S GRANT sysindexes
142 7 2 1 KEY (6f00035ef42b) S GRANT sysindexes
142 7 421576540 0 TAB Sch-S GRANT tJob
142 7 1141579105 0 TAB Sch-S GRANT tPatient_info
142 7 1141579105 0 TAB [UPD-STATS] Sch-M GRANT tPatient_info
142 7 1659921035 0 TAB [COMPILE] X GRANT iDBGetPatInfoRecord
142 7 1659921035 0 TAB Sch-S GRANT iDBGetPatInfoRecord
These are the processes that are being blocked:
spid
------
137
140
Below this is a snapshot of all the SQL processes on the server being blocked.
Save the report and send to the whole database group.
spid kpid blocked waittype waittime lastwaittype waitresource
------ ------ ------- -------- ----------- -------------------------------- -----------------------------
140 4292 142 0x0005 68609 LCK_M_X TAB: 7:1659921035 [[COMPILE]]
137 2576 140 0x0005 64671 LCK_M_X TAB: 7:1659921035 [[COMPILE]]
Dbcc Dbreindex/indexdefrag && Update Stats
Jul 22, 2004Microsoft states that dbcc DBREINDEX automatically updates statistics but INDEXDEFRAG does not. If this is the case, does MS mean that only the affected statistics are updated or all statistics? Also, is it a good idea to run 'Update Statistics' after doing INDEXDEFRAG?
Clive
How To Update Stats Of Tables When Insert Data Into It
Feb 17, 2012How do i update the stats of tables when we insert data into it. I believe Auto stats update happens only when 500+ 20% of the rows are changed for a table. Once we insert say some 1000 records in to a particular table the query time takes too long (more than 1 min). The same query executes faster once i manually update the stats.
View 3 Replies View RelatedSQL 2012 :: Index Maintenance And Update Stats
Jul 22, 2014I am using Ola Hallengrens scripts for index and stats maintenance but I am wondering what most people to in terms of the maintenance schedules. At present we do an index rebuild reorg weekly, but do people also do update stats nightly?
I suppose there is an element of "it depends" here in that the data may be fairly static so the update stats may not be required, or if heavily updated then perhaps rebuilding indexes may be required more frequently.
SQL 2012 :: How / When To Update Stats After Data Load
Mar 24, 2015We have a file import job. This job typically imports millions of records into a SQL2008 DB. After the load the DB performance goes down the drain. Thus far, their solution has been to rebuild indexes on effected tables. I'd like to come up with a better solution. My guess is that after the load, the statistics are shot until the next stats update.
What is the best way to handle this scenario? There must be some way to keep the stats current during a big data load.
SQL Tools :: Update Stats And Rebuild Indexes
Sep 28, 2015We are planning to standardize our newly deployed sql server, As a part of it we have configured 2 maintenance plans 1) Update Statistics which runs daily and 2) Index Reorganize which runs on weekly.
Apart from above, any other things to be in place for better maintenance of the sql server.
Also, how to Index Rebuild activity for clustered indexes requires any downtime.
SQL 2012 :: Update Stats Full Scan And Memory
Apr 9, 2014I noticed today a session that was executing a FULL SCAN update as follows:
UPDATE STATISTICS [XXXX].[XXXX].[XXXX] [_WA_Sys_00000009_318D45CA] WITH FULLSCAN
When I checked the sys.dm_exec_query_memory_grants DMV for the session I could see the following values:
requested_memory_kb granted_memory_kb used_memory_kb max_used_memory_kb
145,705,216 145,705,216 139,977,336 139,980,408
When I checked the Properties of the Statistic I can see it is on a varchar(3) field when there are only 3 different values in there - all char(1)
The total size of the data in the table according to the Disk Usage By Top Table Report is 199,680,712KB
So my question is this...
For the UPDATE STATS on this one column with FULL SCAN, does SQL Server read the entire table into the Buffer Pool. If so then if the table had 199,680,712KB of data then why did the session request 145,705,216KB.
Or does SQL Server just read the column and ClusteredIndex Key into the Buffer Pool?
SQL 2012 :: Index Rebuild Job Fails Periodically At Update Stats?
Mar 18, 2015I have a job that runs nightly, rebuild index. job runs fine every night but every few weeks it fails.
USE msdb
GO
EXECUTE dbo.IndexOptimize
@Databases = 'USER_DATABASES',
@FragmentationLow = NULL,
@FragmentationMedium = 'INDEX_REORGANIZE,INDEX_REBUILD_ONLINE,INDEX_REBUILD_OFFLINE',
@FragmentationHigh = 'INDEX_REBUILD_ONLINE,INDEX_REBUILD_OFFLINE',
@FragmentationLevel1 = 5,
@FragmentationLevel2 = 30,
@SortInTempdb = 'Y',
@UpdateStatistics = 'ALL',
@OnlyModifiedStatistics = 'Y'
This calls the Sp that does the Reindex. It fails at the update statistics with a very generic message. like " Command: UPDATE STATISTICS [xxxx_DB].[dbo].[xxxx_xxx] [_WA_Sys_00000007_49C3F6B7] [SQ... The step failed."
I suspect it has more error but this is all it is showing me when I right click on the job history. therefore, I updated the job step in the advance tab with log to a txt file. Am I on the right track or there is another way to see error some where else.
I looked at the logs but they didn't show any thing.
SQL Server Admin 2014 :: Update Stats After Rebuild And Reorganize Index
Jun 26, 2015We face slow performance issue for like taking long time for same query execution after We apply index rebuild and reorganize index. But, after execution of query or procedure for 2 -3 times, performance will be faster. I have following questions
1 do we need to update stats after we rebuild an reorganize index.
2. is it will be slow for 1-2 times for every query and stored procedure execution after we rebuild and reorganize index?
DB Engine :: Re-indexing And Update Stats Of Mixed Compatibility Databases In Server 2008r2
Jun 15, 2015We have recently migrated quite a databases around 20 from SQL 2000 and 2005 to SQL server 2008R2.
I am using Ola's script for index maintenance for those with compatibility level above 80 as i heard it supports that way.
Hence separated in 2 way job where for those with compatibility level 80, we are running job with below query on each database with 80 as compared
USE ABC
GO
EXEC sp_MSforeachtable @command1="print '?' DBCC DBREINDEX ('?', ' ', 80)"
GO
EXEC sp_updatestats
GO
I am not sure if this is the only way in for those databases, because we are seeing the database getting because of that somewhere using above query.( seems log file filling very rapidly).
But above is not the case with those databases , with compatibility 90 and above.
Table Stats
Jan 5, 2004Hi all,
I would like to create a stored procedure that will get the statistics of all the table in my database.
e.g.
Get the record count of each table in the database
Please help me.
Thanks in advance.
SQL Server Stats
Oct 19, 2001Does anyone know of a tried and tested method for collating stats from SQL Server databases. I have a no. of databases hosted on a single server, servicing a no. of applications. I need to find out the following:
CPU usage of each application on the server
Memory usage of each application
etc
Thanks
Analze Stats
Nov 10, 2007Hi pals,
Basically i am from Oracle background. I need some help.
In oracle we gather the statistics of a table as
SQL> analyze table <tname> compute statistics for all indexes;
or
SQL> EXEC DBMS_STATS.gather_schema_stats('SCOTT')
I want to gather statistics for a particular database say."pubs" for example.
How to do that?
Any suggestions are appreciated.
Thanks.
Franky
SQL Stats In A Form
Jul 20, 2005Hi there...How do I get to extract info like, current Database logged in user orgeneral stats like, ram usage... etc etc etc into a form if I use MicrosoftAccess 2002 for my forms application?Thanks in advanceRudi
View 1 Replies View RelatedGetting Database Stats
Jul 20, 2005COuld someone tell me if its possible to get hold of stats about allDatabases on a SQL Server.The sort of things I would like areName of DBLocation of DBSize of DBLocation of LogfileSize of DBOwnerUsers Authorised to access the DBIs there something that can do thisThanksDerrick
View 2 Replies View RelatedResetting DMV Stats
Feb 1, 2008Hello all-
Is it possible to reset the values of DMV stats/counters without restarting the SQL service? I'm looking for something more than dbcc freeproccache...more along the lines of index_usage and some of the OS DMVs.
Cheers,
-Brandon Tucker
Auto Stats
Apr 10, 2008
Hi all,
I have an dtsx (SSIS) for "clone" manually Sql server database to another.
How I copy all stats from one database to another ? I have problem with "auto stats".
When I try DROP statitics for auto stats I get this error:
No se puede DROP el índice 'dbo.ACTIVIDAD_PROVEEDOR.PK_ACTIVIDAD_PROVEEDOR'. No es una colección de estadísticas.
Cannot DROP index 'dbo.ACTIVIDAD_PROVEEDOR.PK_ACTIVIDAD_PROVEEDOR'. Not statitics collection.
What can I do ??
-- Get Stats list
SELECT
'[' + SCHEMA_NAME(tbl.schema_id) + '].[' + tbl.name + ']' AS [Table_Name_With_Schema],
'[' + st.name + ']' AS [Name],
'' + SCHEMA_NAME(tbl.schema_id) + '.' + tbl.name + ''
+ '.' + st.name + '' AS [Estadistica]
FROM
sys.tables AS tbl
INNER JOIN sys.stats st ON st.object_id=tbl.object_id
ORDER BY
[Table_Name_With_Schema] ASC,[Name] ASC
Thanks in advance, any help will be appreciated, regards, greetings
Getting CPU And I/O Stats From Several Sql Servers
Nov 3, 2006Hello ,
I would like a script for MSSQL 2000 for collection of utilization data for cpu and ram. I need to have the data from several servers.
This data for all servers should be stored in a database. I am looking for 10 minute increments.
How can I go about this.
Thanks
Auto Stats
Apr 10, 2008Hi all,
I have an dtsx (SSIS) for "clone" manually Sql server database to another.
How I copy all stats from one database to another ? I have problem with "auto stats".
When I try DROP statitics for auto stats I get this error:
No se puede DROP el índice 'dbo.ACTIVIDAD_PROVEEDOR.PK_ACTIVIDAD_PROVEEDOR'. No es una colección de estadísticas.
Cannot DROP index 'dbo.ACTIVIDAD_PROVEEDOR.PK_ACTIVIDAD_PROVEEDOR'. Not statitics collection.
What can I do ??
-- Get Stats list
SELECT
'[' + SCHEMA_NAME(tbl.schema_id) + '].[' + tbl.name + ']' AS [Table_Name_With_Schema],
'[' + st.name + ']' AS [Name],
'' + SCHEMA_NAME(tbl.schema_id) + '.' + tbl.name + ''
+ '.' + st.name + '' AS [Estadistica]
FROM
sys.tables AS tbl
INNER JOIN sys.stats st ON st.object_id=tbl.object_id
ORDER BY
[Table_Name_With_Schema] ASC,[Name] ASC
Thanks in advance, any help will be appreciated, regards, greetings
Query Run Time Stats
Aug 19, 2002This is probably a simple question, but I am relatively new using SQL Queries.
I tried this which gives me half of what I need... SET STATISTICS IO ON
I also need my query to return the run time that it took to run my query.
Can someone help me please?
Thanks!
David
Database Performance Stats
Oct 23, 2007I have client tools installed on a server and I have registered our 30+ instances hosted on various servers to this one MS SQL 2005 Management Studios.
Question:
How can I use this set up to send an e-mail distribution list a nice monthly chat showing the sizes of the database, memory, cpu utilization of all the registered databases?
Many thanks for your help !!
seethem
Question On Showcontig Stats
Nov 26, 2007all,
reindex just ran on friday... how is it possible to have a logical
scan fragmentation of 97% ... is it because fillfactor is set to
100 and pages cannot be reorganized any better with this arrangement?
thanks
TABLE level scan performed.
- Pages Scanned................................: 15842685
- Extents Scanned..............................: 1981052
- Extent Switches..............................: 2071631
- Avg. Pages per Extent........................: 8.0
- Scan Density [Best Count:Actual Count].......: 95.59% [1980336:2071632]
- Logical Scan Fragmentation ..................: 97.91%
- Extent Scan Fragmentation ...................: 0.21%
- Avg. Bytes Free per Page.....................: 49.2
- Avg. Page Density (full).....................: 99.39%
Error 208, Missing Stats
Jul 20, 2005Hi chapsJust been having my head messed with...I was running a trace capturing all errors and SQL. Had a bucket oferror 208's (invalid object name). Found the SQL that caused it - anSP.Ran the sp by hand, no messages come up - error 208 logged in thetrace.Couldn't work it out. Then noticed stats missing on one column.Created the stats manually - and suddenly the 208 error stops. Wtf?Is this predicted/expected behaviour? Just me being a noob?Thought I'd just share that. ta ;)SQL2k, sp3a, w2k server.
View 2 Replies View RelatedStats On Report Usage
Jan 31, 2008Does anyone have any reports built that show the usage of the reports based off the ExecutionLog table, or how you would get the "ReportID" to refer back to human readable report name?
I find it hard to believe others have not wanted to see how many reports were ran yesterday, what reports are not being used anymore, and which ones we may need to cache because they are over used throughout the day.
Thanks for any help!
Where Are The Replication Stats Stored?
Aug 14, 2007When I look at the list of publications I can see the status of the last time the replication ran. Where in the database is that information being pulled from?
View 1 Replies View RelatedDatabase Stats In Enterprise Manager
Mar 1, 1999We recently upgraded to Version 7.0 and the Enterprise Manager on the client is not showing the database size or the information in regards to the last backups.
Has anyone else experienced this that can offer a solution?