I have inherited support for a database with many used tables. There
isn't any documentation on what is used or dead. I was hoping to run
traces and capture the objectid but the property doesn't work that
way.
Any good ideas would be appreciated.
Can any one recommend an approach for identifying the frequently accessed tables and files in a SQL/Server application? Particularly, if the database is stored on raw partitions instead of FAT or NTFS. Thanks.
View 3 Replies View RelatedMAH writes "Hi,
How to identify the all tables in stored procedure and function"
How can I determine how much unused space to remove from database files? I am setting up a maintenance plan and I am trying figure that out.
Also, is there a rule on how far to shrink TL?
Please help. Thanks.
Dear Experts,
I'm working for an ERP company, for our product, there are around 2000 tables. in each table, we are using 10 extra columns for our future use. all these are using nvarchar(50) datatype.
almost 95% of the columns in these are not in use almost. those are having null value and in some columns, the values are like 0,1...
is this affects the performance?
please spare your valuble time
thank you very much
Vinod
Even you learn 1%, Learn it with 100% confidence.
Hello,
I have a table which resides on a diff.filegroup.
The space allocated is 7700MB.
Now ehen I use sp_spaceused 'table_name' to see how much space is left it's giving me data as
rows reserved data index Unused
at 1000hrs 629879 6777904 5068344 8 1709552
After an hour 637537 6780336 5070800 8 1709528
After 2hours 643883 6782560 5072904 0 1709656
After 2.5hrs 646887 6783584 5073920 0 KB 1709664 kb
after 3hrs 647239 6783712 5074056 0 KB 1709656 K
If you note rows are increasing,so is the reserved place and data but unused is also increasing.I think it should come down.
What behavior is this?How can I find out how much space is left in this table residing on diff.file group?
TIA
I would like to verify that we do not have any unused login ids. I know I can turn on auditing for successful login attempta and either manually check the logs or write some type of findstring code to capture successful login attempts and then for each success, remove the id from a master list, but I was wondering if there may be a simpler approach. Any thoughts?
Thanks, Dave
I have a 3rd party developed app which has over 42000 data fields in 1200 tables. It is a heavy transaction type app. Of these fields over 10,000 are null for every record. SOme of their homegrown references these fields (and this can be removed), and in many instances many of the fields are not referenced at all. My opinion is that these extra fields are adding a heavy overhead to updates, inserts etc to the server. Any disagreements?
View 2 Replies View RelatedHI all,
I have a database that allocated:
Data: 7300 MB
Log: 2000 MB
But only used
Data: 5500MB
Log: 50MB
How can I free the unused space in the transaction log because
the database is getting too big.
Thank you for your suggestion.
I wrote simple script to check space used by tables:
CREATE TABLE #SpaceUsed(
TableName NVARCHAR(128),
NoOfRows INT,
Reserved NVARCHAR(18),
Data NVARCHAR(18),
Index_Size NVARCHAR(18),
Unused NVARCHAR(18)
)
GO
sp_msforeachtable "INSERT INTO #SpaceUsed EXEC sp_spaceused '?'"
SELECT * FROM #SpaceUsed
SELECT
CAST(Sum(CAST(Replace(Reserved,' KB','') AS INT)) AS NVARCHAR) + ' KB' AS TotalReserved,
CAST(Sum(CAST(Replace(Data,' KB','') AS INT)) AS NVARCHAR) + ' KB' AS TotalData,
CAST(Sum(CAST(Replace(Index_Size,' KB','') AS INT)) AS NVARCHAR) + ' KB' AS TotalIndex_Size,
CAST(Sum(CAST(Replace(Unused,' KB','') AS INT)) AS NVARCHAR) + ' KB' AS TotalUnused
FROM #SpaceUsed
DROP TABLE #SpaceUsed
and one of results looks strange to me:
TableName NoOfRows Reserved Data Index_Size Unused
-------------------------------------------------------------------------------------------------------------------------------- ----------- ------------------ ------------------ ------------------ ------------------
T_TableXX 50081 38024 KB 37432 KB 640 KB -48 KB
Anyone know reason of such result (negative value of unused space)?
I was just reading a doc on SQL , that said that to free up the unused space from the DB , you should use the shrinkdatabase DBCC commnad. ....
I want to knw how to determine how much free unused space is there in a DB
Thanks,
What I am trying to do is get all of the records in a table that are out ofsequence so I know which account numbers I can reuse. I have a rangeof account numbers from 50100 to 70100. I need to know which accountnumbers are not stored in the table (not currently used) so I can use.For instance say I have the following data in table:Account Name--------- --------50100 Test150105 Test250106 Test4......I should see the results:50101501025010350104because 50101-50104 are available account numbers since not currently intable.Thanks.
View 2 Replies View RelatedOn a production database, there is a 2GB database, when I runsp_spaceused it indicates a very high quanity of unused space. Thedatabase has been shrunk & free space sent to the OS. Why is thisvalue so high, what can I do to reclaim the space?database_name database_size unallocated space------------------------------------------------------------------------------DB_00001 2004.13 MB 49.64 MBreserved data index_size unused------------------ ------------------ --------------------------------1531248 KB 412720 KB 165168 KB 953360 KB
View 5 Replies View RelatedI'm working on an app that contains a series of 100 very compute-intensive queries that altogether take 30 minutes on my laptop machine. The app may be atypical in that there is just this series of expensive queries, and not lots of simultaneous simple queries.
To speed up testing, I bought a Dell PE2900 Quad-Core Xeon with 16GB of RAM and four 15000rpm hard drives. It runs 64-bit Windows 2003 server and 64-bit SQL Server 2005 dev edition.
Unfortunately performance is worse than on my laptop. Task manager reports (almost constant) 13GB of available physical memory, while processor usage hovers around 30%. The page file usage is constant at 3 GB.
Where do I start trouble-shooting this problem?
Is there a way to see the the last date a report was accessed? I'm wanting to clean up our report server and get rid of old or unused reports.
View 1 Replies View RelatedHi,
I am unsure if i am managing my connections in the correct way... but as it stands we have them in a .dtsConfig file that each package references in order to get the relevant details..
This is working fine, except that in total our ETL project uses 6 different connections, and none of the packages utilise all 6.
This leads to an error message upon opening up EVERY package stating that there are connection strings in the .dtsConfig that are unused, yeah, thats the idea!
The way i have gotten around this, is to just include all 6 connection managers in every package, but my question is, is there a better way to achieve this same result??
are we going about this in a bit of a cackhanded way?
any incite would be useful..
Best Regards
Chris
Hello,
I have recently started working on a OLAP application. The database is around 35 gig, with over half of that space being taken by the indexes. What has happened is previous developers have added indexes to attempt to improve the performance of a select statement (for reporting). Some of the indexes work, but many do not.
I would like to drop the ineffective indices. What I would like is a way to find if indexes are being used, preferably by object name. Is there a third party vendor that can monitor objects and how much they are used? Is there another way to do this using SQL?
Thanks in advance,
Jim
Hi,
I need to delete ONLY the duplicate rows from a table..Can anyone suggest me a way to do that thing..i used the query..
"Delete from <TableName> where SlNo IN ( Select SlNo from <TableName> group
by SlNO having Count(*) > 1)"
The resultant is all the original rows also getting deleted with the duplicates..anyone please help me out..
Thank you in advance
Rani
How can get an object's dependencies in SQL Server. For example it I have written a procedure which accesses some tables inside it then the procedure is said to be dependent on that table. Or one procedure might call another procedure and hence dependent.
Can I know an object's dependent objects from any system table. I think Oracle has a table USER_DEPENDENCIES which provides this info (I may be wrong :-().
Can anyone help ?
Hi,can anybody tell me how to identify all the databases from all the servers that are being accessed by a particular group
View 11 Replies View RelatedHi
Is there any way to Identify a Deadlock using the Enterprise Manager.
Someone told me that the Red Icon on the Lock/Process ID (Spid) mean a Dealock ... is that True ???
Hi,
Can we define a non-identifying relationship between 2 tables in MS SQL? If yes, what will be the syntax based on what I have:
ALTER TABLE PM_VARIABLE_BIN
ADD CONSTRAINT PM_VarCoef_PM_VarBin_FK1 FOREIGN KEY (MODEL_ID,VERSION,VAR_ID) REFERENCES PM_VARIABLE_COEFFICIENT(MODEL_ID,VERSION,VAR_ID)
go
Some columns in transaction tables are "mandatory fields" on the dataentry screens, and as a result tend to accumulate junk entries, wherethe user puts something, anything, in the window in order to get theGUI to accept the screen. This filler isn't as elaborate as LoremIpsum, but more likely characters from adjacent keys on the second rowof the keyboard, like "lkjkljl". This non-data gets in the way ofapplications that use the data. I wonder if there is a way torecognize and ignore this stuff -- I would assume it's a well-knownproblem, but I haven't found any literature on it. Any pointerswelcome. And sorry if this is off-topic for a DB group.Thanks,Jim Geissman
View 2 Replies View RelatedHi AllThe problem:!!I want to create a temp table which is common between different usersso that each user could select his rows and print them withoutprinting others selection.All clients use the same connection string.Is there a way to identify users?I think it's possible to delete rows of a user when he logs out theprogram.Do I think right?thanks very muchHafez
View 1 Replies View RelatedHas previous work been done on this? Is their a library one can download? Here's the problem. In an aricle a person or author may make a statement about a subject or a person. I am making a database on this.
For example, here in Israel, PM Olmert may make a statement on the teacher's strike or on Abu Mazen. The article may say, speaking of Mazen, Olmert said such and such. PM Olmert said, "xxxxxxx......." with the previous material making it clear whathe was speaking of.
Right now I have ugly code. Is there a neat way of doing this?
If this is the wrong forum, can somebody direct me to the right forum?
Thanks.
Dennist
Have a table showing info like:
Region_ID
Branch_ID
Customer_ID
Transaction_ID
In this regard need to create a view to reflect the info in the order
Region_ID (Ascending)
Branch_ID (Asc)
Customer_ID (Asc)
Transaction_ID (Asc)
But, at the same time, also want to include two additional columns identifying or even inserting 1's against each of the first Customer_ID considering the first two columns, and the second one on the single column itself?In other words consider the following sample, how to add 1 to the last two columns where either the Customer appears for the first time in context with the Region and Branch Fields or to be appearing on it's own for the first time:
Region
Branch
Customer
Transaction
Required_A
Required_B
[code]....
I am working with a large database that has its tables stored on a secondary filegroup. I'm trying to shrink the size of the files but I can't seem to get the system to free up the unused space. I've tried shrinkdatabase and shrinkfile both with and without the truncateonly option. Has anyone else had this problem? Is there a workaround? Any help would be greatly appreciated.
Thank you.
Cathy
I have an old DATABASE that is not more in use , so I want to drop that database.
But before that I want to check that is there any application running on it or not.
can any one suggest me how to do this?
thanks
There are too many indexes built on DB. As per the naming convention it seems the indexes are built as per the suggestions provided from execution plan. I presume most of the indexes are used only once in a month for the reports but are hampering the performance of daily running queries. These are also occupying a lot of space.
To confirm on this I have used the below query to know & identify the unused indexes. I have recorded the counters before and after the huge operations and I observed NO CHANGE in any of the values.
What the below values exactly indicate and when do they change? Is it good to delete the indexes having low USER_SEEKS, USER_SCANS, USER_LOOKUPS?
Query:
SELECT OBJECT_NAME(S.[OBJECT_ID]) AS [OBJECT NAME],
I.[NAME] AS [INDEX NAME],
USER_SEEKS,
USER_SCANS,
USER_LOOKUPS,
[Code] .....
I need to setup a Server Audit in sql 2012 standard edition. The goal is to identify all procs, views, tables, functions that are not being used anymore. What is the best way to setup a server audit to accomplish this? What events need to be captured at a minimum so I can delete all the unused crap in this database. This is a smaller, growing company.
View 2 Replies View RelatedI have a table. In the table I have different types of mailingaddresses. The addresses are linked by and ID. ex,addresses per ID 1ID address1 add21 add31 add4distinct Addresses in tableID address1 add21 add31 add4What I am trying to figure out is if this is possible. Is it possibleto figure out some how with a query that in the above example ID 1is missing add1. I am trying to populate a dropdown list in my codewith just the addresses that are left from the distinct list. I trieddoing an intersect something like this but that did not seem to work.SELECT typeFROM address_demoINTERSECTSELECT typeFROM address_demo AS address_demo_1WHERE progid = '12954892'I am wondering if I am moving in the right direction or if this is evenpossible......Thanks
View 1 Replies View RelatedI have a large table that I recently purged a year of data from.However, the table size in sp_spaceused hasn't decreased as much as Iwould expect. (there are no text or large object columns on thistable, BTW) Running sp_spaceused on the table shows the following.rows reserved data index size unusedTABLE_NAME23470880 67790808 KB 18116312 KB 3211616 KB 46462880 KBI ran a dbcc indexdefrag on all indexes on the table last night,including the clustered index, and I'm still seeing pretty much thesame amount of space reported as unused.The one thing that I haven't done yet is to run the sp_spaceused onthis table with the @updateusage flag set to true as I need to do thisafterhours to reduce contention. I will attempt this tonight andreport on the results.Here's DBCC SHOWCONTIG OUTPUT for the table:DBCC SHOWCONTIG scanning 'TABLE_NAME' table...Table: 'TABLE_NAME' (917578307); index ID: 1, database ID: 7TABLE level scan performed.- Pages Scanned................................: 2264447- Extents Scanned..............................: 285484- Extent Switches..............................: 287092- Avg. Pages per Extent........................: 7.9- Scan Density [Best Count:Actual Count].......: 98.59%[283056:287093]- Logical Scan Fragmentation ..................: 0.04%- Extent Scan Fragmentation ...................: 3.19%- Avg. Bytes Free per Page.....................: 2418.9- Avg. Page Density (full).....................: 70.12%DBCC execution completed. If DBCC printed error messages, contact yoursystem administrator.Looking through the history of the group, the one thing that seems toremedy this problem consistantly is to bcp out all the data, trunc thetable and bcp all the data back in. This is not really a possibilityfor me due to the size of the table and the availability expectationsof my customers. Is there anything that I forgot to check? Do youthink that it's just a matter of incorrect statistics in sp_spaceused?Thanks in advance:Matt
View 4 Replies View RelatedI'm trying to figure out how to reclaim unused space in a huge table (tbl) after setting one of the text columns to be the empty string. Other tables have foreign key columns associated with tbl.
After doing something like this,
update tbl set col = ''
the table doesn't automatically reclaim that space. If I do a direct insert into a new table like this,
insert into tbl2 (cola, colb, colc) select * from tbl
the new table is smaller as expected (about half the size in my case). Any ideas?
Rob