How To Specify Disk Space Allocation For Databases ?
Aug 13, 2002
Hello ,
I wanted to know on what basis the disk space allocation for the databases is planned . Suppose if we plan 60 GB for data files ( mdf )for a given database then what should be the space allocation for the log files ( ldf ) and the tempdb ( both mdf and ldf files ).
Is there any thumb rule or any defined ratio for the same ?
Thanks
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Nov 13, 2007
-- Initialize Control Mechanism
DECLARE@Drive TINYINT,
@SQL VARCHAR(100)
SET@Drive = 97
-- Setup Staging Area
DECLARE@Drives TABLE
(
Drive CHAR(1),
Info VARCHAR(80)
)
WHILE @Drive <= 122
BEGIN
SET@SQL = 'EXEC XP_CMDSHELL ''fsutil volume diskfree ' + CHAR(@Drive) + ':'''
INSERT@Drives
(
Info
)
EXEC(@SQL)
UPDATE@Drives
SETDrive = CHAR(@Drive)
WHEREDrive IS NULL
SET@Drive = @Drive + 1
END
-- Show the expected output
SELECTDrive,
SUM(CASE WHEN Info LIKE 'Total # of bytes : %' THEN CAST(REPLACE(SUBSTRING(Info, 32, 48), CHAR(13), '') AS BIGINT) ELSE CAST(0 AS BIGINT) END) AS TotalBytes,
SUM(CASE WHEN Info LIKE 'Total # of free bytes : %' THEN CAST(REPLACE(SUBSTRING(Info, 32, 48), CHAR(13), '') AS BIGINT) ELSE CAST(0 AS BIGINT) END) AS FreeBytes,
SUM(CASE WHEN Info LIKE 'Total # of avail free bytes : %' THEN CAST(REPLACE(SUBSTRING(Info, 32, 48), CHAR(13), '') AS BIGINT) ELSE CAST(0 AS BIGINT) END) AS AvailFreeBytes
FROM(
SELECTDrive,
Info
FROM@Drives
WHEREInfo LIKE 'Total # of %'
) AS d
GROUP BYDrive
ORDER BYDrive
E 12°55'05.25"
N 56°04'39.16"
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Sep 14, 2000
Hi,
I need to create a 5GB database with 4GB for data and 1GB for log in v7.0. I know that in v6.5 I would have created five 1GB devices - to go easy on the backups.
Could someone please advise on how I should distibute allocation of space.
Should I allocate 1GB to the primary files and 1GB each to 3 secondary files?
Should I just allocate 4GB to primary?
I would really really appreciate any reponse? If there are articles I would appreciate links.
Thanks
kira
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Jan 16, 2001
I have a small data warehouse which periodically has old data deleted.
However after a delete the free space within the database is not released. If I copy the tables, drop them, recreate, and copy back, the space is there.
Any ideas what is causing this anyone ?
Thanks
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Dec 15, 2007
Hi,
can some one throw some light on how the DBAs calucaulate the space allocations?
For example I have 30000 records which has 30 columns each defined as varchar(100) and if the db is full and wants to increase the space. Then how much extrac space should be allocated??
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Jul 1, 2004
Hey all, first time poster here.
Cheers!
Enterprise Edition SQL2k sp3a on Win2k3 Enterprise Edition server.
Using BCP to load ~4 million records.
Largest record width is ~350 bytes.
When finished i have over 6 million pages reserved and only about 800 thousand actually used.
Which puts me 'round about 3 rows per page and WAY too much empty space.
YIKES!
Any thoughts as to why this is happening?
Or insight into how BCP handles page allocations that may be different than the typical extent based page allocations for table data?
Thanks!
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Nov 19, 2007
I was trying to find out how much space is available in a 2000 db for allocation to tables and indexes. I am trying to find the amount of space that has to be used-up before another allocation is automatically made to the database. I looked at sp_spaceused but BOL is rather sketchy at defining what the numbers it returns really mean. Is the "unallocated space" the value I am looking for?
Thanks,
Michael
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Feb 15, 2007
Hi
I am using DTS to transfer tables from Oracle 9i to SQL Server 2000 sitting in a shared environment and managed to migrate
a lot of tables without glitch..
When I was migration a table <XYZ> from Oracle to SQL Server..The table was created in the SQL Server whilst the DTS threw an error that read when it was copying data and 0 rows were copied with the error message being
"Cannot create a row of size 8387 which is greater than the allowed maximum of 8060"
Incidentally the have a table in the Oracle DB that has 152 Rows of Data with 94 Columns..
Does any change needs do be done on the Admin side of the SQL Server to resolve this problem and faciliate effective transfer of data from the DB's?
Thanks in Advance
KI
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Sep 17, 2007
I have to force a space allocation to a DB file in order to stop a Diagnostic Manager alert which states that the database is over 80% full. Now, I don't think this alert is rational, nor do I think it is useful in any way but that's the way it goes. My only option is to allocate more space to the DB so that the space used will fall below 80% so the alert will stop being issued.
So, can you tell me how to force a space allocation on an existing db file?
Thanks,
Michael
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Feb 15, 2007
Hi
I am using DTS to transfer tables from Oracle 9i to SQL Server 2000 sitting in a shared environment and managed to migrate
a lot of tables without glitch..
When I was migration a table <XYZ> from Oracle to SQL Server..The table was created in the SQL Server whilst the DTS threw an error that read when it was copying data and 0 rows were copied with the error message being
"Cannot create a row of size 8387 which is greater than the allowed maximum of 8060"
Incidentally the have a table in the Oracle DB that has 152 Rows of Data with 94 Columns..
Does any change needs do be done on the Admin side of the SQL Server to resolve this problem and faciliate effective transfer of data from the DB's?
Sorry Had I started this topic in the wrong forum.
Thanks in Advance
KI
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Oct 20, 1999
I have a quick question maybe someone can answer me:
Suppose I have a database with data and log on same device, by default,
3 segments are created: system,default and logsegment.
Is the allocation , or any limit, among these segments(i.e. for system table, other table and indexes , log) done by the system ? or will the space required be allocated when they are needed ?
(i.e. I can have a situation of 10% database space used for data, 90% used for logging and I can also have 90% used for data, 10% used for log ?)
Is there any control us we can make ?
Of course, for recovery and performance reason, it is always recommended to have data and log on 2 diff. device.
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May 6, 2004
I've faced with this problem in my DB:
There are some tables that suffer inserts and deletes daily. These tables have 3 nonclustered indexes including the pk.
I perceived that the space used for these tables are growing day after day even ocurring daily deletes.
These inserts and deletes follow the keys of the pk in ascent order.
I ran DBCC SHOWCONTIG on the tables and got results like this:
- Avg. Bytes Free per Page.....................: 7996.3
When I transform the pk to clustered this problem doesn't happen.
You realized the consequence of this: the users complains because the DB is without space, but it's not true!
Anybody could help me to understand why the extents are not being deallocated?
Thank's for help!
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Nov 19, 2000
Hello
I need to setup a compaq sever with 300 MB database, and will be adding around 600 records on a daily basis. Can someone help with how much disk space i should have on sqlserver, providing i have c: and d: setup.
Thank you in advance for all the help.
Paula
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Feb 19, 2001
Hi All,
I have a server and it has C: D: F: I: Drives and all the system files are on C:Drive and and all the .MDF's and .LDF's(model,temp,master) are on the F: Drive and now I am running out of space on both(C: and F: Drives)
1. Can we add space to the C: and F: drives on the fly?.
2. Can I move the System databases ( MDF's and LDF's to some other drive)and if so, how do I do it?( Moving the databases ) and this is on the production database so when I have to do this.Will there be any impact.
Thanks in Advance,
Reddy
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Feb 21, 2003
Does anyone know how to get the free disk space for all drives in many different SQL servers.
I need to populate a report (right now output in Excel) with the free disk space of all drives on all of my SQL servers.
I found xp_fixeddrives but that is specific for the server where it is executed.
Any help or pointers to a script in the archives is much appreciated.
Thanks.
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Aug 2, 2004
I noticed something strange today. I was running a query using query analyzer on a large database (8.8 million records) and the disk space on the c: drive was dropping and eventually went to 0. Availalbe space on the c: drive is 10GB. The query did complete. SQL server and all the databases are on the d: drive. After closing the query results in query analyzer the disk space returned. Is this a concern and is there a way to change it to use the d: for whatever it is doing?
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Jun 30, 2006
This is my first attempt using SQL 2000 and DTS. I am importing an Access database using the DTS wizard. The process fails with a "Not enough space on temporary disk" error. There is definitely enough space on the physical disk. I don't have any limits on any folder sizes either. What "disk" is the error talking about, and how do I give it enough space. The database is relatively small, about 10MB. I believe the database was created using Access 97. Please help.
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Feb 21, 2002
I need a way to get the used space for a physical drive, or even the total capacity for a drive to do some calculations.
I don't want to have to write my own native code either.
Is there a stored procedure that will give this to me?
I saw the xp_fixeddrives that will give the free space, but I need one of the other as well.
Any way to get this?
Thanks,
Jason
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May 9, 2000
We recently moved from v6.5 to v7.0. Now I have the databases and logs set to "autogrow". How can I monitor the disk space to ensure I do not run out of room (or is that preset as to how large it can grow ?). Can't find anything in the books online. Do I do this through the NT admin tool or through the SQL*Server Enterprise Manager and more importantly - how ???
Thanks so much for any help...
Nancy
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Feb 19, 2001
I'm trying to save a dts package and it keeps coming back with insufficient disk space. I noiticed that db MSDB was full so I manually increased the size. It was set to manually grow at 1 mb increments. But for some reason it didn't look like it was doing that so I manually increased it. Right now this is about 355 MB free so that should be plenty to save a package. But its still coming back with the same error insufficient disk space to complete operation. Any ideas on why or why it didn't grow on its own? Please help I can't seem to save any packages.
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Feb 2, 2000
Our database -SQL Server 7.0 sp1 (NT 4.0 sp5)- is growing at a very fast rate despite the fact that we are deleting old record. It doesn't seem to be recovering disk space for the deleted records. Please let me know if there is a specific setting that can help us recover disk space. )
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Mar 23, 2006
Hi,
I'm new to these forums (and to SQL Server), so please be gentle with me.
I am developing a process to obtain information on all our remote servers/databases, and store it in a single local database.
I'm after things like db size, last backup date, free drive space etc...the usual weekly statistics.
I've linked the remote servers to my local one, and have written a few simple procedures (which exist on the local server) to grab backup and file size information from the remote tables. The output is stored locally in tables which we can then query as necessary.
I am having difficulty obtaining the free drive space details.
I'm using :-
'exec <remote_server>.master.dbo.xp_fixeddrives' to get the info, but I cannot store the output in a table on the local server. (remote_server_name, date, drive_letter, space_mb)
I wish to avoid creating any objects on the remote servers if at all possible.
I really want to pass the remote server name into the procedure, and the output to be inserted into the table.
Many thanks
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May 7, 2008
is there a tsql command that returns the amount of disk space available. I want to set up a job to run and email if it gets to a certain level.
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Jan 18, 2007
Hi
I have 600 instances on my network .... I need to monitor the Disk Space ... how should I do that I mean the best way for this would be ???
By Disk Space I mean the SQL Instance should atleat have 10% of free disk space ... If it is less , maybe an alert can be sent or something of that sort .
Now it would be a pain configuring alerts on each machine.
Is there some good way to this
Thanks in advance.
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Aug 8, 2007
All,
I think i know the answer to this one already, but would like to check before going back to my management.
Background. In the past 2 weeks, a number of our databases have shot up in size, and are now at 100% utilisation of allocated disk space. My management have asked me to look into what is causing these to fill up so quickly.
Unfortunatly there were no snap shots or information relating to the databases / tables so i can not determine which tables have grown and are causing the problems.
I have also looked through the sql logs and the event viewer logs to see if there is anything out of the ordinary, but again apart from log / database backups there is nothing of note in there.
I am going to be implementing a solution that I got off another thread which will give me some database / table history to help me in the future, but for now is there anything else i can do? or is it a case of me getting back to the application guys and getting them to reduce data (as there is no more disk space to give them).
Any thoughts or advice you can give me would be greatfully received.
Mark
-noob dba-
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Nov 12, 2007
Okay, so i have a Dual Xeon SQL2k5 Server set up. it's got 4 10k RPM Raptor Drivers (160gb) on it all stripped together. my question is this, i was just doing all kinds of index tuning, and my server didnt have enough disk space to create 2two of the recommended adjustments. i'm curious, if i should just have those two indexes stored on the 1TB Backup array i have? (two 500gb 7200RPM drives)
or should i backup the database, and expand the Raptor Array and then restore the database and create the indexes?
i'm not really worried about down time as long as it doesnt exceed 2 days.
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Nov 29, 2007
All,
I first ran indexdefrag on a table with 1.5 billion rows.
logical fragmentation was at 95%.
logical frag went down to 3% with no real effect on disk.
DBCC reindex had previously been bombing undetected.
Now I've run a reindex on this table:
Reindex Job with Fillfactor =100
Ran in 3:05
Free Disk went from ~150GB before operation to 49GB
File4 went from 347GB to 504GB
Why has so much free disk been consumed by this operation and not released ??????????
Is my only choice to shrink data file???
thanks
Env.
Win2k ENT os
SQL 2k5 std 64bit
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Mar 2, 2008
one user database ldf file is growing like it reached 50GB and total D: drive space is 70GB. No SAN drives for D:. I tried to shrink the file but it not shrinking. Even I tried take to Tlog backup but it is throwing the below error
'not enough disk space'
This is production server. Please let me know how to resolve this issue?
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Mar 2, 2008
one user database ldf file is growing like it reached 50GB and total D: drive space is 70GB. No SAN drives for D:. I tried to shrink the file but it not shrinking. Even I tried take to Tlog backup but it is throwing the below error
'not enough disk space'
This is production server. Please let me know how to resolve this issue?
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Nov 16, 2007
I need to find out how much space is available on a disk (ex. C on the server from within a stored proc on ss2000. Is there an easy way?
Thanks!
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Oct 5, 2007
I heard somewhere that using reporting services you are able to report on more useful aspects also such as server disk space, how is this possible, or where can i find any tutorials to help me out
thanks in advance
Jonny
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May 14, 2008
Another question...
I need to check the space available on a specific disk (D on a remote server, again, this task will be executed from an SSIS package, if I have less than 60GB available, I have to delete some files.
How would you guys do this using VB.NET? If I had SQL Server installed on that box, I could achieve this executing a DOS command... But I don't...
Thanks!
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Mar 30, 1999
Hello
I am trying to upgrade our 6.5 server (which approx takes up 18GIG of data/log) to 7.0...it failed since I only have 7GIG space left.
Do I realy need to come up with an additional 18GIG to accomodate the upgrade?
Thanks. Bob
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