Pls tell me where i will be able to find a good material on interpreting the Execution plans................how do i compare 2 diff plans for Quries written in 2 diff ways...giving same output
View 2 RepliesHi I am slowly getting to grips with SQL Server. As a part of this, I have been attempting to work on producing more efficient queries. This post is regarding what appears to be a discrepancy between the SQL Server execution plan and the actual time taken by a query to run. My brief is to produce an attendance system for an education establishment (I presume you know I'm not an A-Level student completing a project :p ). Circa 1.5m rows per annum, testing with ~3m rows currently. College_Year could strictly be inferred from the AttDateTime however it is included as a field because it a part of just about every PK this table is ever likely to be linked to. Indexes are not fully optimised yet. Table:CREATE TABLE [dbo].[AttendanceDets] ([College_Year] [smallint] NOT NULL ,[Group_Code] [char] (12) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,[Student_ID] [char] (8) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,[Session_Date] [datetime] NOT NULL ,[Start_Time] [datetime] NOT NULL ,[Att_Code] [char] (1) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ) ON [PRIMARY]GO CREATE CLUSTERED INDEX [IX_AltPK_Clust_AttendanceDets] ON [dbo].[AttendanceDets]([College_Year], [Group_Code], [Student_ID], [Session_Date], [Att_Code]) ON [PRIMARY]GO CREATE INDEX [All] ON [dbo].[AttendanceDets]([College_Year], [Group_Code], [Student_ID], [Session_Date], [Start_Time], [Att_Code]) ON [PRIMARY]GO CREATE INDEX [IX_AttendanceDets] ON [dbo].[AttendanceDets]([Att_Code]) ON [PRIMARY]GOALL inserts are via an overnight sproc - data comes from a third party system. Group_Code is 12 chars (no more no less), student_ID 8 chars (no more no less). I have created a simple sproc. I am using this as a benchmark against which I am testing my options. I appreciate that this sproc is an inefficient jack of all trades - it has been designed as such so I can compare its performance to more specific sprocs and possibly some dynamic SQL. Sproc:CREATE PROCEDURE [dbo].[CAMsp_Att] @College_Year AS SmallInt,@Student_ID AS VarChar(8) = '________', @Group_Code AS VarChar(12) = '____________', @Start_Date AS DateTime = '1950/01/01', @End_Date as DateTime = '2020/01/01', @Att_Code AS VarChar(1) = '_' AS IF @Start_Date = '1950/01/01'SET @Start_Date = CAST(CAST(@College_Year AS Char(4)) + '/08/31' AS DateTime) IF @End_Date = '2020/01/01'SET @End_Date = CAST(CAST(@College_Year +1 AS Char(4)) + '/07/31' AS DateTime) SELECT College_Year, Group_Code, Student_ID, Session_Date, Start_Time, Att_Code FROM dbo.AttendanceDets WHERE College_Year = @College_YearAND Group_Code LIKE @Group_CodeAND Student_ID LIKE @Student_IDAND Session_Date <= @End_DateAND Session_Date >=@Start_DateAND Att_Code LIKE @Att_CodeGOMy confusion lies with running the below script with Show Execution Plan:--SET SHOWPLAN_TEXT ON--Go DECLARE @Time as DateTime Set @Time = GetDate() select College_Year, group_code, Student_ID, Session_Date, Start_Time, Att_Code from attendanceDetswhere College_Year = 2005 AND group_code LIKE '____________' AND Student_ID LIKE '________'AND Session_Date <= '2005-11-16' AND Session_Date >= '2005-11-16' AND Att_Code LIKE '_' Print 'First query took: ' + CAST(DATEDIFF(ms, @Time, GETDATE()) AS VarCHar(5)) + ' milli-Seconds' Set @Time = GetDate() EXEC CAMsp_Att @College_Year = 2005, @Start_Date = '2005-11-16', @End_Date = '2005-11-16' Print 'Second query took: ' + CAST(DATEDIFF(ms, @Time, GETDATE()) AS VarCHar(5)) + ' milli-Seconds'GO --SET SHOWPLAN_TEXT OFF--GOThe execution plan for the first query appears miles more costly than the sproc yet it is effectively the same query with no parameters. However, my understanding is the cached plan substitutes literals for parameters anyway. In any case - the first query cost is listed as 99.52% of the batch, the sproc 0.48% (comparing the IO, cpu costs etc support this). BUT the text output is:(10639 row(s) affected) First query took: 596 milli-Seconds (10639 row(s) affected) Second query took: 2856 milli-SecondsI appreciate that logical and physical performance are not one and the same but can why is there such a huge discrepancy between the two? They are tested on a dedicated test server, and repeated running and switching the order of the queries elicits the same results. Sample data can be provided if requested but I assumed it would not shed much light. BTW - I know that additional indexes can bring the plans and execution time closer together - my question is more about the concept. If you've made it this far - many thanks.If you can enlighten me - infinite thanks.
View 10 Replies View RelatedI have two schematically identical databases on the same MS SQL 2000 server. The differences in the data are very slight. Here is my problem: the identical query has totally different execution plans on the different databases. One is (in my opinion) correct, the other causes the query to take 60 times as long. This is not an exaggeration, on the quick DB the query takes 3 seconds, on the other DB it takes 3 minutes. I have tried the following to help the optimizer pick a better execution plan on the slow db:
rebuild the indexes
dbcc indexdefrag
update statistics
I CAN put in a hint to cause the query to execute faster, but my employer now knows about the problem and he (and I) want to know WHY this is happening.
Any ideas would be greatly appreciated.
Thanks.
-Scott
HiCan you give me sone pointers to where I can get more information aboutthe various operations like index seeks,Bookmark Lookups,ClusteredIndex Scan in an execution plan.ThanksRagu
View 2 Replies View RelatedHi Gurus,
What permissio0ns one should have to view execution plans on SQL SERVER 2005.
Thanks,
ServerTeam
I'm looking for assistance on a problem with SQL Server. We have adatabase where a particular query returns about 3000 rows. This querytakes about 2 minutes on most machines, which is fine in thissituation. But on another machine (just one machine), it can run forover 30 minutes and not return. I ran it in Query Analyzer and it wasreturning about 70 rows every 45-90 seconds, which is completelyunacceptable.(I'm a developer, not a DBA, so bear with me here.)I ran an estimated execution plan for this database on each machine,and the "good" one contains lots of parallelism stuff, in particularthe third box in from the left. The "bad" one contains a "Nested Loop"at that position, and NO parallelism.We don't know exactly when this started happening, but we DO know thatsome security updates have been installed on this machine (it's at theclient location), and also SP1 for Office 2003.So it looks like parallelism has been turned off by one of these fixes.Where do we look for how to turn it back on? This is on SQL Server2000 SP3.Thanks for any help you might have for me!Christine Wolak -- SPL WorldGroup --Join Bytes!
View 6 Replies View RelatedHi,We are trying to solve a real puzzle. We have a stored procedure thatexhibits *drastically* different execution times depending on how itsexecuted.When run from QA, it can take as little as 3 seconds. When it iscalled from an Excel vba application, it can take up to 180 seconds.Although, at other times, it can take as little as 20 seconds fromExcel.Here's a little background. The 180 second response time *usually*occurs after a data load into a table that is referenced by the storedprocedure.A check of DBCC show_statistics shows that the statistics DO getupdated after a large amount of data is loaded into the table.*** So, my first question is, does the updated statistics force arecompile of the stored procedure?Next, we checked syscacheobjects to see what was going on with theexecution plan for this stored procedure. What I expected to see wasONE execution plan for the stored procedure.This is not the case at all. What is happening is that TWO separateCOMPILED PLANs are being created, depending on whether the sp is runfrom QA or from Excel.In addition, there are several EXECUTABLE PLANs that correspond to thetwo COMPILED PLANs. Depending on *where* the sp is run, the usecountincreases for the various EXECUTABLE PLANS.To me, this does not make any sense! Why are there *multiple* compileand executable plans for the SAME sp?One theory we have is, that we need to call the sp with the dboqualifier, ie) EXEC dbo.spHas anyone seen this? I just want to get to the bottom of this andfind out why sometimes the query takes 180 seconds and other timesonly takes 3 seconds!!Please help.Thanks much
View 5 Replies View RelatedHi all,
I have a table TableA with few million rows. When I query TableA , the execution plans changes based on the input parameter as shown below . Why this happens ? How to resolve this ? Any inputs would be appreciated.
SELECT * FROM TableA WHERE Column1 = 1 => SELECT -> Clustered Index Scan (100%)
SELECT * FROM TableA WHERE Column1 = 2 => SELECT -> Clustered Index Scan (100%)
SELECT * FROM TableA WHERE Column1 = 3 => SELECT -> Parallelism (3%) -> Clustered Index Scan (97%)
SELECT * FROM TableA WHERE Column1 = 4 => SELECT -> Nested Loops -> Index Seek (50%) -> Clustered Index Seek (50%)
(takes a very long time to retrieve the records)
Thanks in advance,
DBLearner.
Does SQLCE 3 cache execution plans? Or even make use of them?
Thanks
Tryst
In using ADO to connect to SQL Server, I'm trying to retrieve multiple datasets AND statistics that are usually returned via the OnInfoMessage event. For those that are familiar with SQL Server, I need the results returned by the SET STATISTICS IO ON and SET STATISTICS PROFILE ON options. Anyone had any luck doing this before?
Thanks in advance.
I've been working with SQL Server 2005 for a while now and I've noticed some odd behavior that I want to bounce of other members of the community. I should preface that I've been a forum viewer (and occasional contributer) here at SQL Team for a while and I've naturally developed a keen sense for optimizations.
Fundamentally, longer stored procedures with perfectly fine/optimized execution plans are inconsistent with real world performance. In some of these cases, a low subtree cost on a 4 core machine with 16gb of ram and 2 15 drive SAS arrays with little load takes excessively long to run or in some cases doesn't complete.
This isn't due to blocking or resource bottlenecks as I'm quite familiar with built in tools to troubleshoot and resolve those issues. In all cases, I am able to rearchitect the stored procedure into a higher subtree cost variant and get reasonable performance, but it's frustrating to have to redo work and there seems to be no common theme other than longer multi-statement procedures.
I've used SQL Server 2000 extensively and did not notice this level of inconsistency in performance with that product version. Just wondering if others in the community have experiences similar or if I'm just crazy.
Thanks for reading my rant.
- Shane
Hi there - hoping someone can help me here!I have a database that has been underperforming on a number of queriesrecently - in a test environment they take only a few seconds, but onthe live data they take up to a minute or so to run. This is using thesame data.Every evening a copy of the live data is copied to a backup 'snapshot'database on the same server and also, on this copy the queries onlytake a second or so to run. (This is testing through the QueryAnalyser)I've studied the execution plans for the same query on the snapshot dband the live db and they seem to be significantly different - why isthis? it's looking at the same data and exactly the same code!!Anybody got any ideas???
View 3 Replies View RelatedI think not. Microsoft says it is possible: one for parallel and one for serial execution. Don't believe that's possible for a stored procedure to change execution plans on the fly. Have an on-going problem with timeout occurring with an application and narrowed the culprit to a stored procedure. I couldn't find any obvious issues database wise, no locks, etc. so I recompiled (altered) the sproc without making any changes and the issue cleared for a couple days.
It happened again to day, and so I recompiled (altered) the sproc and it went away again. No code changes to both application (so they say) and stored procedure. I ran the below code snippet to check for sprocs with multiple cached plans and the offending one came up on a short list. So, my question is, Is it one sproc per query plan or can there be more than one. I understand the connection issues.
Code:
SELECT db_name(st.dbid) DBName,
object_schema_name(st.objectid, dbid) SchemaName,
object_name(st.objectid, dbid) StoredProcedure,
MAX(cp.usecounts) Execution_count,
st.text [Plan_Text]
INTO #TMP
[Code] .....
Try this script to see what queries are taking over a second.To get some real output, you need a long-running query. Here's one(estimated to take over an hour):PRINT GETDATE()select count_big(*)from sys.objects s1, sys.objects s2, sys.objects s3,sys.objects s4, sys.objects s5PRINT GETDATE()Output is:session_id elapsed task_alloc task_dealloc runningSqlText FullSqlTextquery_plan51 32847 0 0 select count_big(*) from sys.objects s1, sys.objects s2,sys.objects s3, sys.objects s4, sys.objects s5 SQL PlanClicking on SQL opens the full SQL batch as a .txt file, including the PRINTstatementsClicking on Plan allows you to see the .sqlplan file in MSSMS========Title: Using a VB Script to show long-running queries, complete with queryplans.Today (July 14th), I found a query running for hours on a development box.Rather than kill it, I decided to use this opportunity to develop a scriptto show long-running queries, so I could see what was going on. (ReferenceRoy Carlson's article for the idea.)This script generates a web page which shows long-running queries with thecurrently-executing SQL command, full SQL text, and .sqlplan files. The fullSQL query text and the sqlplan file are output to files in your tempdirectory. If you have SQL Management Studio installed on the localcomputer, you should be able to open the .sqlplan to see the query plan ofthe whole batch for any statement.'LongestRunningQueries.vbs'By Aaron W. West, 7/14/2006'Idea from:'http://www.sqlservercentral.com/columnists/rcarlson/scriptedserversnapshot.asp'Reference: Troubleshooting Performance Problems in SQL Server 2005'http://www.microsoft.com/technet/prodtechnol/sql/2005/tsprfprb.mspxSub Main()Const MinimumMilliseconds = 1000Dim srvnameIf WScript.Arguments.count 0 Thensrvname = WScript.Arguments(0)Elsesrvname = InputBox ( "Enter the server Name", "Server", ".", VbOk)If srvname = "" ThenMsgBox("Cancelled")Exit SubEnd IfEnd IfConst adOpenStatic = 3Const adLockOptimistic = 3Dim i' making the connection to your sql server' change yourservername to match your serverSet conn = CreateObject("ADODB.Connection")Set rs = CreateObject("ADODB.Recordset")' this is using the trusted connection if you use sql logins' add username and password, but I would then encrypt this' using Windows Script Encoderconn.Open "Provider=SQLOLEDB;Data Source=" & _srvname & ";Trusted_Connection=Yes;Initial Catalog=Master;"' The query goes heresql = "select " & vbCrLf & _" t1.session_id, " & vbCrLf & _" t2.total_elapsed_time AS elapsed, " & vbCrLf & _" -- t1.request_id, " & vbCrLf & _" t1.task_alloc, " & vbCrLf & _" t1.task_dealloc, " & vbCrLf & _" -- t2.sql_handle, " & vbCrLf & _" -- t2.statement_start_offset, " & vbCrLf & _" -- t2.statement_end_offset, " & vbCrLf & _" -- t2.plan_handle," & vbCrLf & _" substring(sql.text, statement_start_offset/2, " & vbCrLf & _" CASE WHEN statement_end_offset<1 THEN 8000 " & vbCrLf & _" ELSE (statement_end_offset-statement_start_offset)/2 " & vbCrLf & _" END) AS runningSqlText," & vbCrLf & _" sql.text as FullSqlText," & vbCrLf & _" p.query_plan " & vbCrLf & _"from (Select session_id, " & vbCrLf & _" request_id, " & vbCrLf & _" sum(internal_objects_alloc_page_count) as task_alloc, " &vbCrLf & _" sum (internal_objects_dealloc_page_count) as task_dealloc " &vbCrLf & _" from sys.dm_db_task_space_usage " & vbCrLf & _" group by session_id, request_id) as t1, " & vbCrLf & _" sys.dm_exec_requests as t2 " & vbCrLf & _"cross apply sys.dm_exec_sql_text(t2.sql_handle) AS sql " & vbCrLf & _"cross apply sys.dm_exec_query_plan(t2.plan_handle) AS p " & vbCrLf & _"where t1.session_id = t2.session_id and " & vbCrLf & _" (t1.request_id = t2.request_id) " & vbCrLf & _" AND total_elapsed_time " & MinimumMilliseconds & vbCrLf & _"order by t1.task_alloc DESC"rs.Open sql, conn, adOpenStatic, adLockOptimistic'rs.MoveFirstpg = "<html><head><title>Top consuming queries</title></head>" & vbCrLfpg = pg & "<table border=1>" & vbCrLfIf Not rs.EOF Thenpg = pg & "<tr>"For Each col In rs.Fieldspg = pg & "<th>" & col.Name & "</th>"c = c + 1Nextpg = pg & "</tr>"Elsepg = pg & "Query returned no results"End Ifcols = cdim filenamedim WshShellset WshShell = WScript.CreateObject("WScript.Shell")Set WshSysEnv = WshShell.Environment("PROCESS")temp = WshShell.ExpandEnvironmentStrings(WshSysEnv("TEMP")) & ""filename = temp & filenameDim fso, fSet fso = CreateObject("Scripting.FileSystemObject")i = 0Dim cDo Until rs.EOFi = i + 1pg = pg & "<tr>"For c = 0 to cols-3pg = pg & "<td>" & RTrim(rs(c)) & "</td>"Next'Output FullSQL and Plan Text to files, provide links to themfilename = "topplan-sql" & i & ".txt"Set f = fso.CreateTextFile(temp & filename, True, True)f.Write rs(cols-2)f.Closepg = pg & "<td><a href=""" & filename & """>SQL</a>"filename = "topplan" & i & ".sqlplan"Set f = fso.CreateTextFile(temp & filename, True, True)f.Write rs(cols-1)f.Closepg = pg & "<td><a href=""" & filename & """>Plan</a>"'We could open them immediately, eg:'WshShell.run temp & filenamers.MoveNextpg = pg & "</tr>"Looppg = pg & "</table>"filename = temp & "topplans.htm"Set f = fso.CreateTextFile(filename, True, True)f.Write pgf.CloseDim oIESET oIE = CreateObject("InternetExplorer.Application")oIE.Visible = TrueoIE.Navigate(filename)'Alternate method:'WshShell.run filename' cleaning uprs.Closeconn.CloseSet WshShell = NothingSet oIE = NothingSet f = NothingEnd SubMain
View 1 Replies View RelatedI ran Sql profiler and got the following results for a stored procedure
CPU of 1078;
Reads of 125464
writes of 0
Duration of 1882
how do i interpret the above results.
also what CPU and Duration is considered high and indicating a poor performing query.
I am using SQL Server 2005. Thanks
I have some VB.NET code that starts a transaction and after that executes one by one a lot of queries. Somehow, when I take out the transaction part, my queries are getting executed in around 10 min. With the transaction in place it takes me more than 30 min on one query and then I get timeout.
I have checked sp_lock myprocessid and I've noticed there are a lot of exclusive locks on different objects. Using sp_who I could not see any deadlocks.
I even tried to set the isolation level to Read UNCOMMITED and still have the same problem.
As I said, once I execute my queries without being in a transaction everything works great.
Can you help me to find out the problem?
Thanks,
Laura
What would happen to the the queries which are under execution when I change the MAXDOP value from say 0 to 1?
View 11 Replies View Relatedknow if there is any way out to run execution plan for parameterized queries?
As application is sending queries which are mostly parameterized in nature and values being used are very robust in nature, So i can not even make a guess.
Hi
Having some issues with our apps.
We are trying to get our applications to work with sql2005.
Ive got the databases "setup", and all our apps run fine...
...except for when queries are made without the owner of the
table being specified in the query.
The connection is opened with the username that is associated with that owner.
And it fails in Manager as well. Is there something im missing, because you should
be able to do this.
eg:
select * from <table_name>
Gives the error:
Msg 208, Level 16, State 1, Line 1
Invalid object name '<table_name>'.
However if i were to query like this:
select * from <owner>.<table_name>
it works fine.
Anyone know why using
SELECT *
FROM a LEFT OUTER JOIN b
ON a.id = b.id
instead of
SELECT *
FROM a LEFT JOIN b
ON a.id = b.id
generates a different execution plan?
My query is more complex, but when I change "LEFT OUTER JOIN" to "LEFT JOIN" I get a different execution plan, which is absolutely baffling me! Especially considering everything I know and was able to research essentially said the "OUTER" is implied in "LEFT JOIN".
Any enlightenment is very appreciated.
Thanks
after moving off VS debugger and into management studio to exercise our SQLCLR sp, we notice that the 2nd execution gets an error suggesting that our static SqlCommand object is getting reused from the 1st execution (of the sp under mgt studio). If this is expected behavior, we have no problem limiting our statics to only completely reusable objects but would first like to know if this is expected? Is the fact that debugger doesnt show this behavior also expected?
View 4 Replies View Related
Hello :
How to execute a procedure stored during execution of the report, that is before the poster the data.
Thnak you.
Here's my case, I have written a stored procedure which will perform the following:
1. Grab data from a table using cursor,
2. Process data,
3. Write the result into another table
If I execute the stored procedure directly (thru VS.NET, or Query Analyser), it will run, but when I tried to execute it via a scheduled job, it fails.
I used the same record, same parameters, and the same statements to call the stored procedure.
Any idea?
SQL7: I have added a Maintenance Plan to backup to 4mm dat tape the master and msdb SQL databases as well as another database relative to our application called WISE. This works fine; however, it appears to always append to the media as opposed to overwriting (preferred). Any help would be appreciated.....
View 1 Replies View RelatedHi,
I am going to set up maintenance plans on all our SQL servers (7.0 and 2000). I have found several 'tutorials' on how to do this, but no one is describing the options in detail. Can you guys/gals please help me out? We have alot of small databases and some medium (1-2GB).
Thanks//Stefan
I am new to SQL Server 2000 & need ya all's help!!
I am trying to set up a database maintenance plan to back up databases & transactional logs. If I do a full backup once a week & a transactional backup every day...will I be safe enough to have enough backups to be able to restore to any point of time by restoring the full backup & the transactional logs upto that point?
In other words, I am asking what are the points to consider & what should be a decent backup plan? Do transactional logs take stored procedureal changes also?
Thanks for ur help,
Edward
We have Veritas' Backupexec running in our Enterprise and the Veritas Install actually installs MS SQL Server MSDN on each Server in the Enterprise.
It looks like it also sets up a default Maintenance plan within each of the MSDN Instances.
I guess my question is.. Can I manage the Maintenance Plans on these MSDN Instances via the SQL Server EM GUI from my desktop?? Seems like when I look at the Maintenance plans alot of the options are greyed out or not available. What I am trying to do is modify one of the maintenance plans to have the backups deleted after one week (One of the Instances has been running a complete backup on the Backupexec Databases for a year and there are a years worth of backups on the Server) but the option to "remove files older than" is 'greyed out' ??????
Eh uhhhh where did the old '-DelBkUps 7DAYS' (delete files older than 7 Days) option go?
Is this a future product enhancement?
I fee like such a dirty noob.
Does anyone get any issues creating "Backup" jobs as a Maintenance Plan when specifying the backup location as a UNC path (e.g. "\backup_bladeBACKUPS")?
For some reason, if i try using the UNC path for a 1-time backup, it works, but when I am trying to put it into a scheduled job, it does not 'seem' to perform the Backup step.
Help please...
seethem
I have 2 SQL databases which are the same and are giving me differentquery plans.select s.* from hlresults hinner join specimens s on s.specimen_tk = h.specimen_tkwhere s.site_tk = 9 and s.location in ('ABC','WIAD')and s.date_collected between '2/1/2003' and '2/3/2006'order by s.location, s.date_collectedBoth boxes have the same configuration, the only difference is that oneof them is a cluster.The Acluster box is taking twice as long to run the query.I have run statistics on both, and the cluster is still creating abitmap and running some parallelism which the other box is not.Also, the the first step, the A1 box estimates the rows returned to bearound 80K and the actual rows returned is about 40K - subtree cost =248. The Acluster box estimates 400K - subtree cost=533!After running statistics, how can it be so off?I've also reindexed to no avail . . .any insight would be very much appreciated. We just moved to this newsystem and I hate that the db is now slower -A1:affinity mask -2147483648 2147483647 0 0allow updates 0 1 0 0awe enabled 0 1 1 1c2 audit mode 0 1 0 0cost threshold for parallelism 0 32767 0 0Cross DB Ownership Chaining 0 1 0 0cursor threshold -1 2147483647 -1 -1default full-text language 0 2147483647 1033 1033default language 0 9999 0 0fill factor (%) 0 100 90 90index create memory (KB) 704 2147483647 0 0lightweight pooling 0 1 0 0locks 5000 2147483647 0 0max degree of parallelism 0 32 4 4max server memory (MB) 4 2147483647 14336 14336max text repl size (B) 0 2147483647 65536 65536max worker threads 32 32767 255 255media retention 0 365 0 0min memory per query (KB) 512 2147483647 1024 1024min server memory (MB) 0 2147483647 4096 4096nested triggers 0 1 0 0network packet size (B) 512 32767 4096 4096open objects 0 2147483647 0 0priority boost 0 1 0 0query governor cost limit 0 2147483647 0 0query wait (s) -1 2147483647 -1 -1recovery interval (min) 0 32767 0 0remote access 0 1 1 1remote login timeout (s) 0 2147483647 0 0remote proc trans 0 1 0 0remote query timeout (s) 0 2147483647 0 0scan for startup procs 0 1 1 1set working set size 0 1 0 0show advanced options 0 1 1 1two digit year cutoff 1753 9999 2049 2049user connections 0 32767 0 0user options 0 32767 0 0Acluster:affinity mask -2147483648 2147483647 0 0allow updates 0 1 0 0awe enabled 0 1 1 1c2 audit mode 0 1 0 0cost threshold for parallelism 0 32767 0 0Cross DB Ownership Chaining 0 1 0 0cursor threshold -1 2147483647 -1 -1default full-text language 0 2147483647 1033 1033default language 0 9999 0 0fill factor (%) 0 100 90 90index create memory (KB) 704 2147483647 0 0lightweight pooling 0 1 0 0locks 5000 2147483647 0 0max degree of parallelism 0 32 4 4max server memory (MB) 4 2147483647 14336 14336max text repl size (B) 0 2147483647 65536 65536max worker threads 32 32767 255 255media retention 0 365 0 0min memory per query (KB) 512 2147483647 1024 1024min server memory (MB) 0 2147483647 4095 4095nested triggers 0 1 0 0network packet size (B) 512 32767 4096 4096open objects 0 2147483647 0 0priority boost 0 1 0 0query governor cost limit 0 2147483647 0 0query wait (s) -1 2147483647 -1 -1recovery interval (min) 0 32767 0 0remote access 0 1 1 1remote login timeout (s) 0 2147483647 0 0remote proc trans 0 1 0 0remote query timeout (s) 0 2147483647 0 0scan for startup procs 0 1 1 1set working set size 0 1 0 0show advanced options 0 1 1 1two digit year cutoff 1753 9999 2049 2049user connections 0 32767 0 0user options 0 32767 0 0
View 1 Replies View RelatedDoes anyone know if Sql Server 2005 Express SP2 support scheduled backups and maintenance plans?
Looking at http://msdn2.microsoft.com/en-us/library/bb283536.aspx , it appears to...
Thanks.
Does any body have any good recommendations for maintenace plans?
Here are few questions I have.
When should indexes be re-indexed?
What should be done first? Reorganize indexes or rebuild indexes?
How often backups should be done and what kind?
How often should database statistics be updated?
Do database statistics need need to be updated on system databases?
How often should a database integrity check be done?
How long should history be kept for?
What is a good order for tasks should be done?
Any input would be great
Eytan
I created several Maint.Plans before installing SP2. Now I need to modify them and I get the following error. I cannot even Create new ones, because of the Enumerate error. Please advice if this error is due to the same issues mentioned on this blog.
When replying please cc me at Camilo.Torres@bellsouth.com
Thanks
TITLE: Microsoft SQL Server Management Studio
------------------------------
Enumerate target servers failed for Job 'Daily Maintenance Plan 1'. (Microsoft.SqlServer.Smo)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.3042.00&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Enumerate+target+servers+Job&LinkId=20476
------------------------------
ADDITIONAL INFORMATION:
Failed to retrieve data for this request. (Microsoft.SqlServer.SmoEnum)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&LinkId=20476
------------------------------
An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)
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String or binary data would be truncated. (Microsoft SQL Server, Error: 8152)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=09.00.3042&EvtSrc=MSSQLServer&EvtID=8152&LinkId=20476