I'm trying to establish the mb usage of a series of nonclustered indexes, I'm used to using the manage indexes GUI in 6.5, and showcontig doesn't quite give me what I want, any suggestions?
View 2 RepliesCan anyone tell me a good way to monitor which indexes are not being used? Over time, I'm sure there are extraneous indexes in our database, which I would like to get rid of.
Any ideas would be appreciated.
Thanks,
Rob
I want to create a lot of index for my database for performance.
But I need find memory usage by indexes.
How to find memory usage by index in sql server?
We're looking at optimizing some of our tables because we have indexes on columns that are not used. So for example we might have a table that has 6GB of data and 4GB in indexes (according to sp_spaceused). We need to know how much of the 4GB of indexes is consumed by each of the indexes individually. I've tried dbcc showcontig, but that doesn't tell me the amount of space used by the index that I run it for.
Second (and by far not as important), is there a way to determine how much space is being consumed by data in a specific column. The original creator of some of the tables added an incrementing identity column that is used no where in the system. I'd like to be able to say..."If we drop this column we'll save XXX in space."
Knowing the index space is more critical, the column space would be nice but not necessary.
i want to create a lot of index for my database for performance.but i need find memory usage by indexes.
How to find memory usage by index in sql server?
Keep getting this error when positioning to the last page of a report.
Using Server 2003...SqlRpt Svcs 2000 sp2
Detail error msg:
Exception of type Microsoft.ReportingServices.ReportRendering.ReportRenderingException was thrown. (rrRenderingError) Get Online Help
Exception of type Microsoft.ReportingServices.ReportRendering.ReportRenderingException was thrown.
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
Anyone have any suggestions? Any way to find out what collection is blowing?...or where parameter name: index comes from?
Hi all,
I need to drop some of my indexes to keep the size of my DB manageable. I know they're not all being used, but what is the best way to determine how often they are being used? Statistics? I haven't come across any text referring to this so any help is appreciated.
Pete Karhatsu
Does SQL Server store somewhere (in a table that I can query) when last an index was used by any queries?
Or does it store which query plans it's a part of?
Hi all,
When i execute the following query on my database, to see the index usage information,
-------------------------------------------------------------------------------------------
use databasenamego
SELECT OBJECT_NAME(S.[OBJECT_ID]) AS [OBJECT NAME], I.[NAME] AS [INDEX NAME],
USER_SEEKS, USER_SCANS,
USER_LOOKUPS,
USER_UPDATES FROM SYS.DM_DB_INDEX_USAGE_STATS AS S
INNER JOIN SYS.INDEXES AS I ON I.[OBJECT_ID] = S.[OBJECT_ID]
AND I.INDEX_ID = S.INDEX_ID
WHERE OBJECTPROPERTY(S.[OBJECT_ID],'IsUserTable') = 1
-----------------------------------------------------------------------------------------
I see for some indexes, the columsn User_seeks= 0, User_scans = 0 .
Does this mean that, those indexes are not being used .
I wanted to know, what is the best way & best criteria to look for, in order to find whether particular index is being used (or) not.( Probalby,We can use DTA , but i believe , there should some way through DMV's also)
Because by keeping unncessary indexes, performance can be hammered on a table whose size is 170 Gb with 9 Non-clustered indexes , 1 clustered
Need some advice on this.
Thanks..
I am trying to compute the actual size of data and indexes in my database.
I have used DBArtisan,Desktop DBA and SEM , they all gave me different results.
Does any body now a valide , correct way of determining the size and the utilization of the database.
-Also I am trying to come up with archive/purge procedures , is their publications,white papers or ideas about this issue.
Thanks in Advance
Elias Akouri
I am looking for some expert opinions on when is it not appropriate to use a clustered index on a table?
Future guru in the making.
Does anyone know if there is a rough guide in terms of how much memory SQL server will normally use relative to the size of the actual databases that it is hosting?
For example, I'm working on a server that hosts only about 250-300 MB worth of data (including all of the full text indexes, etc.) but the sqlservr.exe process is using 1.25 GB of ram. Also Page Reads/sec is around 1200 -- despite there being over 5 GB of RAM available and not being used (the PF is about 3.25 GB, total memory in the machine is 8GB). Below that w3wp.exe uses only 290 MB and lsass.exe uses only about 225 MB. The machine is a web/database server that is hosting ASP.NET 2, ASP.NET & Classic ASP pages (and the associated databases). For the amount of hardware, the server seems to be responding to requests on the slow side. While some of this is probably due to the legacy code-base, there seems to be a noticeable difference in speed after SQL Server is restarted.
Thanks,
Jeremy
I've got a table with a pk (bigint, no autoincrement) that has a clustered index. Same table has an integer field with a non-unique index on it.
When I do a count(*) on the table, the non-unique index is used (20m rows, 12 secs). When I force the count(*) to use the clustered index, it takes 43 secs. When selecting rows, usually the clustered index is used.
So I'm curious as to why the count(*) uses the non-unique index and the others don't. I've noticed it's faster but, why? Any ideas/considerations?
I am trying to find out CPU utilization from the history using process.%processor time. I am having dual core CPU with 2 numa nodes each having 16 logical cpus bind to it.
how to calculate the CPU utilization using perfmon.I tried to use SQL query which gives CPU history using SQL DMV, but I am unable to get the exact value. Because in between I have used the same querry to capture my CPU usage on the run day, the value on run day and the query which iam tryting to pull out is different. I am using the same query to pull the history data with providing the date.
-- Get CPU Utilization History (SQL Server 2008 and above)
DECLARE @ts BIGINT
SELECT @ts =(SELECT cpu_ticks/(cpu_ticks/ms_ticks)
FROM sys.dm_os_sys_info);
SELECT SQLProcessUtilization AS [SQLServer_Process_CPU_Utilization],
SystemIdle AS [System_Idle_Process],
100 - SystemIdle - SQLProcessUtilization AS [Other_Process_CPU_Utilization],
[code]....
Hello!
Is there any way to determine index usage statistics for a given table?
For examle, I have a table, with three indices. I need to know how many times each index was used. Is it possible?
And second part of question: I need to know, which user overloads my base with their giantic queries. Is there any way to determine, how many system resources each of user's sessions uses?
MS SQL Server 2000 Enterprise Edition.
Thank you!
We're using slowly changing dimensions to control a number of data tables in our system. Each table has five or six business keys, but the indexes of the tables are built so they're as efficient as possible (i.e. the fields with the highest diversity are listed first). How does the SCD wizard determine the order of the business key fields? Is there a way I can view or manipulate the statement the SCD task is using to make sure either (a) the indexes match the statement, or (b) the statement matches the indexes?
View 1 Replies View RelatedHi guys,
My company is currently migrating from Interbase to SQL Server 2005. During the migration we have came across a rather peculiar issue and wondering if anyone can advise.
We have a table.. named "prospect" which holds client information
We have a stored procedure which hangs on the following statement.
DECLARE @surname char(25);
SET @surname='BLAH%';
SELECT *
FROM Prospect
WHERE c_surname LIKE @surname;
The above takes 28 seconds to run. The following statement returns a result inside a second.
SELECT *
FROM Prospect
WHERE c_surname LIKE 'BLAH%';
In Interbase, the original returned the answer within a second too. The schema in both database is the same.
The 1st statement does not use an index! The execution plan is different to the 2nd statement. I am aware I can create an index recommended by the Database Engine Tuning which solves the issue or specify the index to use in the original statement but why does the engine not use the correct index if there is a variable involved? I need to know as we have just started looking at the code.
Thanks,
Kalim
I can use Profiler to see database usage activity. However, in addition to it, is there a good query I can use to see whether user databases are being used (last select, last update, last alter or last delete etc., with date/time stamp)?I am looking for both SQL2000 and SQL2005 as we need to decommission some of the older servers.
View 6 Replies View RelatedI am using SQL 2012 and I am trying to find buffer cache usage by DB objects within a particular DB.
I am running the following query
select
name as DB,
objname as db_object_name,
COUNT(name) as cache_page_count,
COUNT('x')*8.0/1024 as size_mb
[Code] ....
Following are the results:-
DB db_object_name cache_page_countsize_mb
TEST_DBNULL 428 3.34375
TEST_DBsysobjvalues 369 2.882812
TEST_DBsyscolpars 44 0.34375
TEST_DBsysssislog 38 0.296875
....
.....
Question- Why am I getting 428 pages for which there is no corresponding DB object? Why are so many pages present in sys.dm_os_buffer_descriptors but are missing from sys.allocation_units.
It is possible to find table size and in that table each row size.
View 4 Replies View RelatedHello:
I have been reviewing the primary keys that our vendor-purchased application
has provided. There are no foreign keys and I am reviwing the clusered/nonclustered indices
to see whee foreign keys may be needed. I have noticed some clustered indices contain
3 or 4 varchar(20) columns.
1)Is there a maximum size for an index where its size may be counterproductive and perhaps
the index slows down processing?
2) Does any one know of software tools that analyzes primary keys and designates
possible foreign key candidates?
Thanks.
David Spaisman
Are there any references that help with estimating the size of a FTS index, or the whole catalog? I'm trying to do some capacity planning, and can't find anything to help me guess how much disk I'll need.
View 4 Replies View RelatedHi,How do I find the max row size for a particular table?This was the error I recieved while execting my proc with the relevanti/p I need to:"cannot sort a row of size 8192, which is greater than the allowablemaximum of 8094"I also understand that the max bytesize of a row is 8060 bytes.Butwhtz this 8094?TIA,Seetha
View 2 Replies View RelatedHi all,
Is it possible to get the name and size of each index in a table? Please let me know.
Thanks in advance,
Praveena
How much does a table increase(%)in size when a non clusterd index is added to a column in that table if the table has say 1000 records?
Thanks.
Hi all,
Is it possible to get the name and size of each index in a table? Please let me know. In sql 7, we could do this using EM but, in sql 2000, I'm not sure how to do this.
Thanks in advance,
Praveena
question, since yesterday i have a problem with my indexes, they started growing very big, this morning it stopped growing but now my database is 22 GB instead of 15 GB, i already tried to rebuild my indexes and even tried to recreate my indexes but they didn't get any smaller.
Is somebody formiliar with this problem, the app developer only changed a few tables and they say that it's have nothing to do with it, i don't know what they changed, i'll tell that later.
tia
Benjamin
Need an SQLDB consultant?
check www.veeningsengineering.nl
Env: SQL Server 2000The following sql stmt seems to find a particular table's sizeprogrammatically:select top 1 [rows],rowcntfrom sysindexeswhere ID = object_id('aUserTable')and status = 0and used > 0However,a) I'm not 100% sure of its consistency;b) Both [rows] col and [rowcnt] col seems to produce same data, whichone is supposed to be more accurate (or more up to date)?TIA.
View 2 Replies View Related
hello
i have one doubt.can anybody clarigy it.
every time i am doing my database shrinking manually.
what i am asking i find out every time when i shrink my database that sql is showing minimum size of database to shrink.how can its getting minimum size
but i need to find out how to get minimum size of particular database programatically.
thanx
hi ,How can I find sql Datatype (like NVARCHAR , DESIMAL & .. ) and size of columns and also is it Identity or not in a Table of SQl server?
View 4 Replies View RelatedI'm trying to determine how much space some tables use (SQL2000), and I found 2 suggestions posted earlier, but can't get them to work for me.
The first was
"Right click on the DB in Enterprise Manager, select view then taskpad."
When I try that, I get some of the tables displayed with the info I want, but I can't see them all and can't scroll down beyond the first 22 tables in the database.
The second suggestion:
exec sp_msforeachtable @command1="print '?'",@command2="sp_spaceused '?'"
It says "command copleted successfully, but where does the output to this go ?? Is there something other than "print" I should use ?
The grid pane is empty.
How to find max pool size in sql server 2012?
View 2 Replies View Relatedhi,There is facility to do backup of the database. I can use thatfacility to backup the database. But before i do a backup i want tocheck if the disk space available enough to backup that database. Ihave a 22gb database mdf file, when i took a backup of that its only3gb. SO i cannot use the size of mdf file to determine the databasedump file. Is there any facility available to find out the backupdatabase dump size before doing the backup?ThanksNabhonil.
View 1 Replies View Related