Will A Backup/Restore Fix My Fragmented Heaps
Oct 1, 2007
Have a 1TB of heaped tables being used 24/7 and performance is degrading over time, and the vendors dynamic SQL won't include clustered indexes! (and they won't let me add them)
I can reorganise the heap with an ALTER TABLE statement, add a column,
clustered index, drop column etc. However this is intrusive and I would require an entire day to perform this piece-meal, and a blanket script for 2000+ tables would kill performance all together.
Would a back-up, then remove the 1TB DB followed by a restore placing the data back onto disk unfragmented. (with LS this would only require a 3 hour down-time window) In theory it should work?
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Jun 25, 2015
I am looking for a SQL Backup/Restore tools which can restore multiple environments. Here is high level requirements.
1. We have 4 DBs, range from 1 TB - 1.5 TB Each Database. When we restore to QA, DEV, or Staging, we usually restore 4 of them.
2. I am looking for the speed to complete restoring between 1 - 2 hours for 4 DBs.
I am evaluating the Dephix Software but the setup is very complex and its given us a lot of issues with Windows Authentions, and failure in the middle of the backup. I used Guess Software many years ago but can't find it on the web site any more. Speed is very important for us mean complete restoring as fast as possible. We are on SQL 2012 and SQL 2008 R2.We are currently using NETAPP Technology and I have Redgate Backup Tool but I am mainly looking for fast Restore Process.
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Feb 12, 2008
Hi all,
a question that has been in my mind for a while:
A HEAP is a table that has no clustered index.
Now consider a table that has a unique clustered index (primary key) on an identity column ?
For example:
create table Test
(
TestId int identity(1,1) not null,
...,
constraint PK_Test primary key clustered (TestId)
)
Is there a recognised term for such a table ?
Thanks
Graham
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Aug 3, 2015
Need to restore database,here's the scenario:
Data got deleted on Friday evening, need to have database restored to FRiday afternoon and also some data has been entered on Monday, which needs to be there.
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May 28, 2015
What is the difference between Heaps and Balanced Trees? Is it true that if a table has no clustered index it is a heap?
If so , if the table has only Non clustered index, is it still a Heap?
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Apr 1, 2008
I should restore a SQL Server 2005 Database from backup. The backup contains three files, named user.bak0, user.bak1 and user.bak2.
How is the syntax of the restore filelistonly and the restore database ... ?
I usualy write
restore filelistonly from disk = 'path and filenam.bak'
restore database. zy
from disk = 'path and filename.bak'
with replace,
move.....
move....
This works but I cannot use it with a splitted backup file. The files are much too big to put together to one file.
Thanks in advance for any help.
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Oct 17, 2006
I have a full backup and several diff backup,now i want to restore
firstly,I restore full backup
RESTORE DATABASE ***
FROM DISK = 'D:databackup200610140000.bak'
WITH NORECOVERY
GO
it's working,then i don;'t know how to continue
Thanks in advance
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Oct 14, 2007
I neglected to backup the transaction log as part of the process of backing up the database. Now i only have the backup file for the database and no transaction log backup. When i try to do a restore on the database, i get the error on a "tail log missing" message (which i'm assuming is that it's looking for the t-log backup?).
Is it possible to restore or even restore to a new database? I'm only looking to retreive data from 2 tables within the backup file.
Thanks!
SQL Server 2005 on Windows 2003 Server x64.
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Feb 27, 2004
Hi,
I have a database and application that are running slowly at the moment. My investigations so far have led me to HD issues. After an analysis of the data drives (RAID 5 on 5x36Gb drives) it shows that they are 99% fragmented.
Can i run a defrag on this drive?
Will i have to stop the SQL services?
tia
fatherjack
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Jul 23, 2005
kalpesh.s...@gmail.com Feb 1, 6:50 am show optionsNewsgroups: comp.databases.informixFrom: kalpesh.s...@gmail.com - Find messages by this authorDate: 1 Feb 2005 06:50:21 -0800Local: Tues, Feb 1 2005 6:50 amSubject: how do you know indexes have been fragmentedReply | Reply to Author | Forward | Print | Individual Message | Showoriginal | Remove | Report Abusei ran dbcc showcontig on my sql server db and it returned fo*llowingTable: 'Table1' (1621580815); index ID: 1, database ID: 7TABLE level scan performed.- Pages Scanned................................: 4982- Extents Scanned..............................: 628- Extent Switches..............................: 627- Avg. Pages per Extent........................: 7.9- Scan Density [Best Count:Actual Count].......: 99.20% [623*:628]- Logical Scan Fragmentation ..................: 0.00%- Extent Scan Fragmentation ...................: 99.52%- Avg. Bytes Free per Page.....................: 38.3- Avg. Page Density (full).....................: 99.53%Based on searching for info on index defrag it seems my Exte*nt ScanFragmentation percentage is not what it should be (0%) . Is *it trueandif yes how can you be sure that your indexes have been fragm*ented.If indexes are really fragmented what is the best way withou*treindexing(or is that the best way) to defrag the indexes.Thank you Kalpesh
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May 26, 2008
Last week i found on my database that almost all indexes had more than 70% of fragmentation. I rebuilt the indexes to fix the "problem" but today i found out that in one particular table (one with little more than 1 million records") the indexes are again 99,80% fragmented.
Did I do somethin wrong? If you ask me if there are a lot of transactions running over that table, the answer is NO. There is one procces that could append (insert) between 500 and 1000 records but this happens just once a month.
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Apr 8, 2015
I just did index defragmentation for some databases include MSDB . I notice there are 3 indexes from MSDB database that fragmented quickly ( I did rebuild last nite at 10 PM - > fragmentation level becomes zero but today at 9 am it become 80 % ).The indexes are backupsetuuid, backup media family uuid, backupmediasetuuid. I am thinking to set the fill factor for those indexes = 80 respectively.
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Dec 1, 2007
Hi everyone,
If I have a table with some indexes on the foriegn keys and these indexes are heavily fragmented (80%+), is it normal for queries to return incorrect results?
For example if I had a table called Customer( CustID, Name) and Orders (OrderID, CustID, Product, Date).
Lets say I have a non clustered index on CustID in Orders table, and the clustered indexes are Customer.CustID and Orders.OrderID
If the non clusterd index on Orders.CustID becomes heavily fragmented and I am querying the Orders table with TSQL "SELECT * FROM Orders where CustID = @CustID" I sometimes get missing data or incorrect results. In one case all orders for a particular year were missing, but if I queried using OderID they were returned. Rebuilding the index fixed the problem.
I know the index should be rebuilt or reorganized depending on the fragmentation but if one happened to become this fragmented should it start returning incorrect data?
- Using SQL Server Express 2005
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May 17, 2006
I had to replace my hard drive which was going bad. I reinstalled Sql 2005 and now need to restore the backup that I have. I selected Restore Database and chose From Device, and selected the backup location on J: drive and selected the backup file which has no extenstion. I checked the checkbox next to the backup set to restore. Click OK and then I get this error message:
Restore failed for Server
System.Data.SqlClient.SqlError: Directory lookup for the file "C:Program FilesMicrosoft SQL ServerMSSQLdataMyDB_Data.MDF" failed with the operating system error 3(The system cannot find the path specified.). (Microsoft.SqlServer.Smo)
I don't know why it is looking for a MDF file as this was never in the Backup folder. Can someone please help me on this? I thought I was doing the right thing making a backup all along and now I can't restore it!
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Dec 17, 2001
Is it possisable to restore from tape when the backup was taken from a
different server. ServerA has the tape drive which performs the backups
to tape, but ServerB which is under a different domain wants to restore ServerA database on ServerB, both databases on the two servers are the same
is it possiable to restore a database on ServerB using ServerA file?
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May 7, 2001
hello all !!
I suffered a crash on one of my disks on a server runing MS-sql 7.0,and found out my backupexec dosnt really restore a runing version of my database.
which solution would you recomend ,taking in acount i may have a copy of the database on another computer,which files i can restore?
thanks
yochai lam
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May 24, 2001
Hi I am operating my databases under "trunc log on checkpoint" mode as I do not need point of failure recoverability.I was performing a recovery test using a backup which resulted in it being unsuccessful .Error Message received was
"Recovery has failed because a nonlogged operation could not be redone.Use the RESTORE statement to restore all data in filegroup PRIMARY to a pt beyond the nonlogged changes"
Isnt sql*server supposed to prevent a non-logged operation while a backup is in progress?Also how do i prevent such a situation from recurring.
If i switch to single user mode before a backup how do i prevent exisiting users from accessing ... without bouncing my sql*server?
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Sep 25, 2001
Hi Everyone,
I did a restore of database the user the original database is admin where it says the user is dbo.
After i did the restore i was able to add admin as user and dbowner but when i tried to change the user it said the user already exists.
How do i create the same..enviroment as or the original system with users..i saw a problem i i drop the user and them recreate it then it cannot find the object or the object which are owned by it are lost..could any one help me with this ...so as how to and what do i need to keep track of while restoring the database and configure the server back with same user names and permissions.
Thanks.
Kavitha
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Sep 15, 2000
Hi,
I have two databases on two different SQL Servers,our application is updating these two databases simultaniously.So every time these two databases will be in synchronized state.
Now i want to schedule backup for these two Databases.How can i take backup of these two databases at single point of time.
so that if i restore these two backups on corresponding servers,There should not be any conflicts.
Any suggetions please....
Ananth
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Sep 6, 2000
How can I backup and restore a database from one server to another. I am new in this business. I need your help please!!!
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Jan 29, 2001
I'm trying to backup a database to remote server first i did add a device using USE master
EXEC sp_addumpdevice 'disk', 'NetworkDevice', 'cabaanpubs.bak'
then
BACKUP DATABASE pubs TO NetworkDevice
it gives me an error saying
Server: Msg 3201, Level 16, State 1, Line 1
Cannot open backup device 'NetworkDevice'. Device error or device off-line. See the SQL Server error log for more details.
Server: Msg 3013, Level 16, State 1, Line 1
Backup or restore operation terminating abnormally.
I don't really understand what's goin.
basically i need to synchronize my production database so what am i planning is to take a full backup on that server everynight and then restore it back.
Can some one guide me to take a backup as well as restore on the remoteserver with syntax and what does it mean to add a device...i could not understand.
Is there any other process that's much faster to implement.
i appriciate your support and help .
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Aug 30, 2000
Whenever I restore a backup on sqlserver 7.0 and create a new database from it, I always end up having problems with the users existing in the backup.
To enable those users to have access, I end up creating logins with those names and when I try granting those users Database access, I get the error message that the user already exists in the database.
Could some one tell me the right way to restore the backup and having all the users of the database also restored in the proper manner.
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Dec 13, 1999
WE are using sqlserver 7.0 & backing full database using Seagate backup ver 7.2 on a tape drive.
I have following questions if anybody could help
1]How do I restore a single table backup from the tape backup without restoring the full database first on the disk & then running import/export
utility to transfer/ copy that particular table to production database.
Is there any third party backup utility which allows for a single / selected table restore?
2]What are the steps or if anybody has the script for tansfering logins/users
with permisssions & without deencrypting the passwords when transfering from one server to another server.
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Nov 26, 2006
Hi there,
I am new to administration. i would like to create a development environment out of production database.
for this i have to backup the production database on a regular basis. then use this backup and restore it to a database on different. i can do this task, but i want to automate this task to do it on regular basis.
i would like to schedule my backup time. and immediately after backup i want to restore it to the database on other server, over writing existing data. what is the best way to do this???
thanks,
kishore
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Apr 20, 1999
I have a question related to SQL 6.5. We have a SMS 1.2 server which uses SQL 6.5. Two months ago, one of the NT admins did a NT backup of SMS database(sms.db) and then formatted the HD. Now, we need the SMS server back again. We installed the NT server, SMS server snd SQL server on that machine. The problem is, we now want the SQL server to recognize our SMS database (SMS.db file). We don't have any SQL backup of any database (that means, no copy of master database, no copy of other databases. IS THERE A WAY TO RECOVER SO THAT SQL SERVER RECPGNIZE THE SMS DATABASE(SMS.DB FILE)
Please help me out.
I would really appreciate that
Jazib Frahim
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Sep 21, 2006
Does some one know how to back up a dts and then restore from a backup?
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Feb 2, 2004
I have a database xxxx on server a, I want to copy this DB to server b.How can I do this By back and restore.
WHere can take this back up?I want to take this to a personal folder and wanted to restore to server b from this folder.Is it possible?
Thanks.
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Apr 11, 2008
Hi all.,
How to take Backup for whole database and how to restore it.,
which would be the efficient way.,
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Apr 16, 2008
Hi,
Can a SQL server 2005 db be backed up and restored on a SQL Server 2008 db ?
Thanks
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Jun 2, 2006
Hi
I have 2 databases namely A & B respectively..... I have written a stored procedure that takes the backup of database A ....... Both the databases are operational .... Can I restore this Backup of Database A ...to Database B .... Is it possible. ....
I have read soimething that we can do it but with the Restore command we have to use the with move option...
I dont seem to understand this can someone please help me on this one....
Thanks .......
Kid.
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Jan 30, 2008
I am trying to restore the backup from enterprise management studio
i have selected the source of resource from device.Its not displaying the mdf etc files in the select the backup sets to restore..
I can't proceed further.
Please suggest me..
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Jul 20, 2005
Hi everyoneI have this situation with backup and restore.I have two instances of sql, sql1 and sql2.Production server is sql1 and test server is sql2.I created database maintenance plan that makes full backup every nighton tape.I would like to make some kind of job or to add steps to job that wascreated with DMplan which will make restore of backuped database to sql2server.How can i do this? How can i read which is the last file backuped ontape?Thanks very muchAlex*** Sent via Devdex http://www.devdex.com ***Don't just participate in USENET...get rewarded for it!
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Dec 15, 2007
Hi All,
I've been working developing database on my PC @ work, and sadly enough would like to spend some time on it at home. To these ends I backed up the database at work where it restored fine. However have tried to restore the file at home and am getting an error saying the operating system cannot access the file. Is this something to do with NTFS permissions?
Thanks in advance
Alex
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