Hey guys,
I have a table which has 6 text columns (tblA).. I no longer require 1 of those text columns and want to reclaim the space that it is currently taking up..
Is the only way to BCP out all the data (except the 1 column i no longer require) drop the column and BCP the data back into the table?
OS: Windows Server 2008 R2 Standard
SQL Server: 2008 SP1 Standard
We have a database with about 500 GB of free disk space on data file and the database is being set to read only mode for the fore-see-able future. We would like to release this unused disk space. We know that we could shrink the data file and then work on re-indexing to remove fragmentation.we wanted to check if some other method like backup and restore of the database could free up unused disk space in the data file. if someone was able to release unused disk space on data file by implementing a backup and restore.
I'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
currently stuck with an issue where I need to reclaim the unused table space in SQL server.
ISSUE: Due to database size issue we have moved all the images from database to filesystem and want to reclaim the unused space now....I have tried shrinking the database and rebuild the indexes but didn't see any difference in the table or database size.
Similarly I have identified many Non clustered indexes on big transactional tables(~ 4 million records) that where not used since GO live 1 year back, so I wanted to drop these indexes to cut down the performance and maintenance overhead , so my question is will dropping these indexes reduces the database size?
best method to my issue regarding unused space. SQL SERVER 2014 BI EDITTION..I have a table that showed 62% Data, 7% unallocated, and 29% unused space.I ran the ALTER TABLE <table name> REBUILD, which changed it to 32% data and 67% unused.What I do with this table monthly and what I believe is causing this unused space issue is this:Every 1st of the month I get a csv file that holds around 3.2 million rows/15 columns of data. About 3 gbs every time.It's 13 months of data. I remove the last 12 months from the current table and import the new 13 month data.I do this twice a month and have no choice because the data is constantly updated and why we get it twice a month.So I am deleting around 6 gbs of data a month as well as adding around 6 gbs of data a month.
I believe this is why I end up with so much unused space, but just found the REBUILD command, which worked but now a small hit on performance and have too much space in the current table. I have read several times that shrinking the file is no good, but what other way to get rid of the extra space in this table? Also, the table doesn't have any indexes or primary key because of duplicates.
how to claim unused free space at table level. The database size is of 4.6TB, recently I deleted some data which is of almost 1.5TB but my unused space has grown upto 2.5TB leaving me short of space on my drives. How do I claim this usused on to OS Disk space?
View 12 Replies View RelatedI hv dropped the useless columns for a table but the table size is remain unchanged by executing sp_spaceused. pls advise how to release table spaces.
thx
Hi ,
I have a table let say TableA , which have a size of 22 GB.Due to its size i down size this table by deleting 40% rows.So ideally it should size to 15 GB but space is not released by TableA. How i can do it ? I tried shrink database, shrink data file wizards and DBCC command , Reorganize the index but all is in vain.
Any suggestion /solution?
Dear Friends,I'm running a SQL 2005 database. Lately (in the last 4 months) my database size has grown exponentially and now totals 2.5 gig (it used to be about 100mb). When I run sp_spaceused i get the following info:
Reserved Space 2522MB
Data 450MB
Indexes 215MB
Unused 1856MB
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The unused space is reserved by my two largest tables, one being 542mb (which is a log I create and the size seems fine for the amount of data) reserving 1033mb and the other being 121mb (which is another log and also seems fine) reserving most of the rest.
I have tried running DBCC SHRINKFILE and DBCC CLEANTABLE commands on a backup copy of the database and cannot seem to free the unused space.
I have also tried copying the database in an attempt to reduce the unused reserved space and have tried creating a new database and importing the tables with no luck
Any help would be greatly appreciated, noting that I'm honestly not that technical and would probably need step by step instructions, but if you only have time to point me in the right direction that would also be of great help!
Jano
In on of the server tempdb is not releasing the reserved space after completion of data loads,as of now 99% of free space available in data file,we tried to shrink the datafile ,and space has not been released.
View 7 Replies View RelatedHow 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.
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 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,
On 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 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
Hi all,
I'm running SQL 7.0. Due to large tables, the space on the SQL server was getting filled up. So i truncated some tables. Now even though the SQL dbase shows 3Gb free, the HDD shows only 150 MB free. How do i get SQL 7.0 to release the sapce back to HDD?
Thanks
MKB
Hi,
When -all- records from a table with a varbinary(max) column are deleted (not via truncate), the table properties
still show a dataspace size from before the delete operation.
Inserting new blob records only leads in the growth of the allocated space withouth reusing the empty
already allocated space.
Runnning commands like dbcc updatusage/checkdb/cleantable/reindex or sp_spaceused @updateusage = N'TRUE'
seem to have no effect.
Does anyone know when space allocated by a varbinary col. is released?
thanks,
Derk
running SQL 2005 STD ed SP2. DB is in simple recovery mode.
Hi,
I am using SQL2005 SP1 and I have a 4Gb Tempdb (datafile) with virtually nothing in it.
I am unable to release the free space to the operating system. I have used dbcc shrinkfile...truncateonly but this has had no effect.
There is no error message and there are no open transactions, I have attempted to drop the data file by transferring to a new file but I can't because it the primary file...
Any idea would be very helpful!!
Cheers.
SQL7: After doing a full backup Enterprise
Admin still shows "Transaction log space"
in use. Isn't it that way that full backup
releases all space formerly used by
log files?
Greetings from Mannheim, Germany
Ricardo
I have scenario where I have process that loades data into SQL server 2012 database by doing some manipulation on data like sorting , aggregation, etc. Once this process is completed it's not free up the Tempdb space. If I restart the database, then it does.
is there any way (apart from shirking) to release space for Tempdb, like writing some post SQL queries to delete/ truncate the data and logs from temp db?
Hello all,
I have a database that supports two different applications.
For arguments sake I'll call them "intelligent app" and "clueless app"
The client that provided me the schema for the clueless app used reserved words as field names.
The words used are:
value, state, and time
I explained to the client that modifying them could prevent current/future issues.
The client is an "oracle" db (and in my mind should know better but .....) and responded back to me with the following:
BEGIN QUOTE
They are not currently reserved and there is no guarantee they will ever be reserved. In fact, the SQL server line eliminates as many words from the reserved list as they add with new releases. There are other words on the
possible future reserved keyword list that I do not wish to avoid either unless forced to some day, like depth, size, class, zone, level and others.
END QUOTE
Now for the assistance request, where can I find the documented ramifications of using reserved words?
I want to have my documentation (and my ducks lined up) when this clients portion of the app fails.
Any and all assistance is greatly appreciated.
T. Mullins
I 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 RelatedHow to find if there is a query that can be written on DMV's which will be able to retrieve the indexes that are not being used in a table.
View 2 Replies View RelatedHi,
We have a table with a column called 'text' Yes, text is a reserved keyword for data type. I can select it 'SELECT text FROM thistable' but when I try to use it in the order clause, 'SELECT text FROM thistable ORDER BY text', I get this error:
'The text, ntext, and image data types cannot be used in an ORDER BY clause'
I know, you're not supposed to used reserved keywords but the person who initially created this didn't know. We would prefer not to change the column name as this would require tons of changes in the code & COM object.
Is there a way to order this column?
Thanks.
The Query:
INSERT INTO Table1
VALUE('this doesn't work')
How can I Insert strings like the one above, into my database?
Does anyone know where I can get a 7.0 reserved word list?
View 1 Replies View RelatedI migrated a SQL7 database to a SQL2000 server by restoring from a backup file. Everything worked fine until we restarted the SQL Service a few days later and suddenly a table named Function caused me much grief
It seems Function is a reserved word in 2000 - but not in SQL 7.
I am guessing the restore fooled the system into thinking it was a SQL7 database until the restart? Anyone have any ideas why else it would have worked just fine for 5 days, then die on a restart of SQL service (not even a reboot!)
Sandie
I've got a sproc that we are migrating from SS2K that uses the reserved keyword 'Pivot'. Best way to replace it. I think it is renameable until the select from TempDB (which is mysterious as I can't see a table in tempDB by that name!!) as below...
CREATE PROCEDURE [dbo].[sp_CreateXtab]
@select varchar(8000),
@sumfunc varchar(100),
@pivot varchar(100),
@table varchar(100),
@SQLOutput varchar(8000) OUTPUT
[code]....
Hi, I have got a problem. When I try to access my database table Users, I get the following error:
SELECT permission denied on object 'Users', database 'Users', owner 'dbo'.
So
I tried to grand this select command in MS Web Data Administration, but
it doesnt work. When I try to grand db_datareader role to dbo, I get
the following error
[Microsoft][ODBC SQL Server Driver][SQL
Server]Cannot use the reserved user or role name 'db_datareader'.
Does someone have an idea where could be a problem?
We want to covert all reserved words
in procedures to upper case,any suggestions ?
I have one column name that is: description
when i write a query the world lights up with blue, I think I saw someone using [ ] around the word but I no longer remember if this is the way to handle reserve words that have been use as columns names
Hi there,
I'm trying to recreate a MS-SQL database in MySQL. One particular table has a column names "Precision", a reserved word in MySQL. I woudl really prefer to keep this name if possible as it will be referenced in all sorts of places. I've tried single and double quotes, that didn't work.
Is it possible to use reserveds word as column names? How?
cheers