Reducing Log Space
Dec 4, 2000
Hi all!
The transaction log of the databse i am using has grown up to 7GB...(previously the setting was unrestricted file growth...now changed to restrict file growth to 7 GB approx.)
now this 7GB space is not needed....i would like to reduce the size to around 2 GB...how can i achieve this?i observer that on the properties i can only increase the size and not decrease it...also i am using transactional replication..this server is the publisher to four subscribers..
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Aug 17, 2006
Dear all,
In my current database design, there is one table (PState) which has a Primary Key (int) and a few other fields.
During development, a pattern started to arise; for certain rows in PState, I wanted to specify an additional set of columns (over 10 of them with quite large lengths) for each row in PState. However, as these additional columns would only be required in approximately 20% of the rows of PState, there would be plenty of NULL values in PState if I would make this table wider than necessary. So, I decided to create a separate table with those optional columns (PStateWFI). In order to attach these additional columns in PStateWFI to PState in the cases they were needed, I would obviously have to create a Foreign Key constraint on the Primary Key of PStateWFI so that these optional rows would know which row in PState they would belong to.
However, the problem with this approach is that one could define multiple rows in PStateWFI referring to the same row in PState, which would not make sense. Thus, a UNIQUE index constraint added to the constrained ID column in PStateWFI would make sense to ensure that there could only be one set of optional columns added to each row in PState. But now, when adding the UNIQUE index, the FK constraint started to appear as a bidirectional key link in the Diagram; hence, new entries in PState would have to meet a FK constraint based on PStateWFI, which was not intended.
Hence, I had to create a quite awkward design to enforce the constraints:
1. The PState table has a Primary Key (PState.ParticleID, int, Identity Specification: Yes)
2. The PStateWFI table has a Primary Key (PstateWFIID, int, Identity Specification: Yes)
3. PStateWFI has field "PStateID" which has a FK constraint to PState.ParticleID (which is a one-way constraint operating in the correct way and does not constrain insertions in PState)
4. PStateWFI has an additional column ParticleIDIndex which has a UNIQUE Index attached to it.
5. There is a check constraint on PStateWFI enforcing PStateWFI.ParticleIDIndex = PStateWFI.ParticleID.
Although this structure does the job, it makes it necessary to add a redundant column in PStateWFI by duplicating the PStateWFI.ParticleID into PStateWFI.ParticleIDIndex, since I can't create a UNIQUE index on PStateWFI.ParticleID without constraining the PState table as well. So, insertions into this table would have to insert the same value into two columns. Not a big deal, but appears slightly ugly.
Basically I'd hope someone could explain why a bidirectional FK constraint has to be enforced on the primary key table in a relationship when the constrained column in the primary key table has a UNIQUE index attached on it. I have a few other cases where the above approach would benefit from a more clear structure.
Thanks in advance for any advice.
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Nov 14, 2007
Hi,
I am trying to do this:
UPDATE Users SET uniqueurl = replaceAllEmptySpacesInUniqueURL('uniqueurl')
What would be the syntax.
Any help appreciated.
Thanks
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Feb 23, 2007
I am generating a Report from Sql Data Source in Sql Server 2005 and viewing the Report in Report viewer control of Visual Studio 2005.
The data in the Data Source contains string with multiple spaces (for example €œ Test String €œ) but when they get rendered in Report viewer control, multiple spaces gets converted to single space €? Test String €œ.
I tried following solutions
1) Replacing spaces with €œ €?
2) Inserting <pre> tag before the string and </pre> tag after the string (Also tried <Pre> instead of <pre>)
But in all the cases result is same. The Report Viewer control is showing €œ €? instead of space and €œ<Pre>€? tag instead of preserving spaces.
Please provide me a solution so that spaces can be preserved in Report Viewer.
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Sep 14, 2007
Hi,I have the following three tables below containing Resources,Categories and a link table so each Resource can belong to one or moreCategories. I would like to create a view (ResourceID, ResourceName,CategoryID, CategoryName) that includes one row for each Resource withjust one of the Categories that it belongs to.Resource table- ResourceID- ResourceName- etc..Category table- CategoryID- CategoryName- etc..ResourceCategory table- ResourceID- CategoryIDCan anyone help? Thanks.
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Nov 26, 2015
I am using the below script to get space alerts  and now i am interested in sending alerts  if for any drive space available is Less than 10% or 15%.. how to convert beelow code to find in %Â
Declare @Drives Varchar(20)
DECLARE @Spaces Varchar(50)
DECLARE @availableSpace FLOAT
DECLARE @alertMessage Varchar(4000)
DECLARE @RecipientsList  VARCHAR(4000);
CREATE TABLE #tbldiskSpace
[Code] ....
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Jan 2, 2001
i used "dbcc shrink file" to reduce the log file of a database.the query analyzer says "successfully executed" but the log file doesn't seem to reduce..am i missing something?
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Jan 9, 2008
Hi guys, how are you?
Ive got a little question, i hope you can help me up
in sql server i have 3 tables
Code:
user
id_user - autoincremental int, primary key
username - varchar 30
car
id_car - autoincremental int, primary key
carName - varchar 30
user_car
id_user - int, foreign key
id_car - int, foreign key
what i want to do, is to
1.- insert a row in User,
2.- insert a row in Car
3.- using SCOPE_IDENTITY, to insert a new row in user_car that relates the ids of the last added car with the last added user.
But i need that to be done in one single transaction.
Once that is done, i have another question
how can i do the same but where i can add a variable number of different cars? in other words, i add 1 user and then add 5 cars, then create 5 rows in the user_car where i have the id of the last added user with the incremental id of the last 5 added cars
how can this be done in one single transaction, i cant make it in 3 transactions cuz it would cause me a lot of trouble. Any help?
my transaction should be something like this
Code:
insert into user(username) values('user1');
insert into car(carName) values('car1');
insert into user_car(???,???)
but im not sure how to do this in one single transaction
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Apr 18, 2007
Hi,
If I understand it correctly, you only need an LDF file to restore to a point in time after the last full backup? If this is so, then Could the LDF file not be reduced in size on perfoming a full backup?
Most of the time it's not an issue as there is enough space on the HDD, but is it possible to reduce the ldf file size periodically (manually would be fine). Is changing the recovery mode from FULL to SIMPLE and then back to FULL an option?
If so, is anyone able to tell me how, exactly, I can do this? ... I've sifted through the documentaion to no avail ... :eek:
Many thanks
Rob
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May 8, 2007
I am trying to reduce the size of my tempdb using the DBCC SHRINKFILE command and get the following error.
DBCC SHRINKFILE: Page 1:1164376 could not be moved because it is a work table page.
How can I get around this so I can shrink the db?
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Mar 2, 2005
Hi.. I was doing a good maintenance on my DB and my trans log LDF keep growing until 30GB but my DB data file MDF is only 2GB. I found the two following method to reduce my log size.
Method 1: I used veritas to backup log file with truncate
Method 2: I used the shrink database option in Enterprises manager to shrink it (file chosen=log , use default option)
After doing that, I found my LDF log file is still about the same size=27GB but when I see clearly, from the shrink database windows, the log spaced used reduced to only 100MB, the allocation log space is still 27GB. Why? How to make the LDF smaller to be the around the same size as the space used 100MB?
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Jul 20, 2005
This is driving me bananas. Can't find any info on this anywhere....SQL 2000 seems to replace double space with a single space when I seta varchar field to " " (2spaces), it only stores " " (1space). Whyon earth would microsoft do this? If I save 2 spaces - I WANT TO SEE2 SPACES!!!!Can anyone help? Is this a database setting? Is this due to usingvarchar?Any help appreciated.Colin Hale
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Apr 29, 2002
hi
i have a database that becomes to big after a few days. is there a chance to say if the table reaches a number of lines or a special memorysize, delete (or better archive) the oldest entries?
thanks
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Jul 29, 2002
Hi all,
I have started to look at the way our production DB has been defined and set up, with the view to improving performance.
The DB is now 11gb, and the original size was set up as 3000mb, the rest has been take in 10% additional extents.
Now, back in my DB2 DBA days, this was a bad thing to have any data spread across extents as they may not be contiguous. I am assuming that is the same with SQL Server. Can someone confirm/deny this?
If this is the case, how can I get the DB back into one primary partition?
Thanks in advance.
Mike
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May 25, 2001
If I have a transaction log in a database of size 1GB ( space allocated is during creation of database) currently only 300 mb of its space is used i.e. nearly 700 mb is free. If I want to reduce physical file size of transaction log by 200 mb and release it for operating system then How can I do it???
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Dec 16, 1999
I have inherited a number of databases which were substantially over sized when they were set up. I'd like to reduce both the log and database files to be smaller than their original sizes, what's the easiest way to do this? If anyone has any experience of doing this please reply.
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Jul 17, 2003
i am new to sql server. i recently found the transaction log size of my database has reached 109 MB. how can i reduce it. a transaction log backup was sceduled daily at 12.00 noon nad full backup monthly.
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Dec 14, 2001
I have a production database of a size of 70 GB. Half of the data was archived and deleted from the current database. What is the best way to
reduce the size of the database, as we cannot shrink an entire database to be smaller than its original size? Thanks a lot!
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Jan 10, 2005
I created few jobs that would archive the production DB and delete the archived data...
but it looks like the DB size is not reducing!!! Some times it looks like the size has increased!!
I think this is because of the log file size has increaded by the DELETE operations....But what can I do for this???
Please Help!!
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Feb 9, 2012
Having difficulty achieving an end-result in transforming the results of a rowset query into XML.
Here is simplified test code that displays my problem:
declare @TimesheetHdrs table (EmpID int,EntryYear smallint,EntryPeriod tinyint,AdminNotes varchar(max),UserNotes varchar(max))
declare @TimesheetDtls table (EmpID int,EntryYear smallint,EntryPeriod tinyint,ProjCode varchar(25),ActCode varchar(25),ExpendCode varchar(10),EntryDate date,EntryQty decimal(7,2))
declare @Projects table (ProjCode varchar(25),ProjName varchar(200))
[Code] ....
The result of the above code is the following:
Code:
<root>
<timesheet empid="1" entryyear="2012" entryPeriod="1" adminnotes="These are the admin notes" empnotes="These are the user notes">
<project projnum="TestProject" projname="The really big project for our best customer">
<activity actcode="000103020200302302322" actname="Demolish the 55th story of the main tower">
[Code] ....
Notice how there is a tremendous amount of redundancy in the XML. I was hoping to come up with an XML result of the following, which transmits the same data, without the redundancies.
Code:
<root>
<timesheet empid="1" entryyear="2012" entryPeriod="1" adminnotes="These are the admin notes" empnotes="These are the user notes">
<project projnum="TestProject" projname="The really big project for our best customer">
<activity actcode="000103020200302302322" actname="Demolish the 55th story of the main tower">
<expenditure expcode="1" expname="Regular Hours">
[Code] ....
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Feb 23, 2004
The length of a column is 20(varchar),
When i m trying to execute select column name it gives all 20 characters.
My requirement is - is there any option by which i will be able to see only 10 characters ?
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Aug 24, 2007
I'm trying to insert all the rows from a table to a new table.
(insert A select * from AA)
The reads on Profiler shows ar really high value (10253548).
First I created a unique clustered index and the reads shows (3258445), then I created a non clustered index expecting to have lower reads. Instead the reads shows (10253548).
I read creating indexes helps reduce reads. But it's not happening.
Any ideas what is going on?
=============================
http://www.sqlserverstudy.com
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Jul 20, 2005
I am working on a personal project and am drawing a complete blank(too much celebrating last night?) on the SQL term that is used toeliminate multiples of like data when it is returned from thedatabase.ie, instead of ....redblueredgreenit would return ...redbluegreenSorry for the trouble and thanks.
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May 19, 2008
Hi all,
We currently have an e-commerce app written in .NET with SQL Server backend and built-in CMS that works just fine. We are now implementing a service to remove the need for the CMS by automating the synchronisation of the e-commerce database with a back-office database (non SQL Server). The problem we have run into is that during some of the larger updates to the website (i.e. new product information), the e-commerce system is experiencing timeouts. The synchronisation service uses transactions while performing updates and so I am assuming that the timeouts are being caused by the transactions locking tables and data.
What steps can I take to try to reduce these locks? The transactions are as short as possible so I do not think we can reduce the amount of processing each transaction deals with. I was looking at different isolation modes, Snapshot in particular, to reduce the locks, but would like some advice from someone who may have dealt with this type of situation before I start messing around here. (The synchronisation service uses the default ReadCommitted level, BTW)
Any advice you have to offer will be much appreciated.
Regards,
Stephen.
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Dec 7, 2007
I have a Log file grown to 28 G.
TASK: I want to claim the hard disk space.
I want to use
--backup Log DB-NAME with truncate_only
--dbcc shrinkfile(DB-NAME_Log,1)
Is there any risk involved in above steps, and OR would any experienced Folk like to share his or her idea to the Task as above.
Many Thanks,
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Jul 12, 2006
Hi All,
Is it possible to reduce the automatic failover time on MS SQL 2005? It seems to take around a minute on my servers.
Thanks for your help.
Regards,
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Feb 12, 2008
I have a database who is in full recovery mode. I have four maintenence plans setup: database backup, log backup, optimization and integrity checkup. The last two plans run weekly and the first two run daily. I found that the log size often increase to a dramatically size in a very short period, almost same size as the database file (4G). Further I found that the size seems increase a lot after the last two plan runs.
My question is that the optimization operation(reconstruct index page) will write any reocord to log file? Is this possible a reason?
Now the log file occupy too much disk space (90% of space can be free). What I should do? Shrink database weekly?
Thanks
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Dec 5, 2001
Hello,
Somebody know how to reduce the space allocated for the transaction log space for my SQL_DB ?
3700 MB allocated but only 100 MB used and 3600 MB are free !
Transaction log properties :
Automatically grow file are filled
file growth by percent = 5%
maximum file size - restrict filegrowth = 3700 MB (we can't reduce it !)
Thank you for your precious help !
Khaix from Brussel.
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Nov 14, 2006
How do we suppress multiple spaces to a single space in T-SQL
E.G.
Field: FullName
e.g.
WOMENS HEALTH RIVER VALLEY
JOHN FAMILY MED GROUP
HERSH STWEART P.
PARK HEIGHTS MEDICAL CENTER
KOPP WHITEFIELD E
The o/p wanted is
HERSH STWEART P.
Thank you.
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Jan 3, 2001
Can anyone help me reduce a transaction log. It is currently at 2.5GB because it was set to autogrow with no backup !?
I need to drastically reduce it and have backed it up and tried dbcc shrinkfile...but...it now says space used is 120MB but current size is still 2.5GB.
How can i reduce this down please ??
thanks
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Jun 8, 2004
Hello. I am wondering how to effectively reduce the size of my database. After viewing the individual table sizes, I have come to realize that nearly 99% of the database's size is due to images. I am told that too much binary data is not good. How can I go about reducing the size of my database (possibly the images themselves)? I'd appreciate any help.
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Oct 3, 2006
At this time I am only playing with the applications that generate the data and send it to the database. Without doing too much, and with deleting most data tables that were created, my transaction log file has grown over a gigabyte. I tried using the SQL server management studio (express) to shrink the database (tried shrinking files, too) but that did not make the file smaller. Right now there is hardly any data in the database (6 tables, a dozen columns and rows each) so it must be old transactions that are kept in the log. How do I get rid of the old data and make the file size smaller? Thanks.
Kamen
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Feb 5, 2007
Hi all,
Currently we take full database backups nightly for our SQL Server 2000 data warehouse systems. The backups take a very long time over 20 hours and we would like to find a good way to reduce these backup times. How can I change our backup plan to reduce the long backup run times. Data size is 1 TB for our data warehouse database server.
Thanks
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