Full Or Diff Backup Impact On Log Size?
Jul 13, 2007I have a question regarding FUll and differential backup.
We we take full or diff back up, does it create lot of logs ie. Does full or diff backup has any impact on log size?
Thanks
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Diff And Full Backups Have Same Size!
Apr 30, 2008In what scenario – diff and full backups have same size? My guess is excessive fragmentation, any thoughts?
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I think, therefore I am - Rene Descartes
How To Restore Database From Full Backup And Several Diff Backup
Oct 17, 2006I 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
I Lost Full Backup On Tape Only Diff Available ?? :(
Oct 17, 2005Need help.
We lost (Couldn't find ) the full backup on a Tape we were supposed to use for restore, but seems like they lost it. All we have is a Diff backup. Wondering if that is any good at all .
Please help
Thanks
Estimation Of Full Backup Size
Jun 28, 2006Has anyone come across a more accurate method than sp_spaceused to estimate the size of a full database backup for SQL Server 2000 ?
I have found this to have too great a variance (even after running updateusage) to rely on any accuracy for it. I have also looked at perhaps using the ALLOCATED Pages indicated in the GAM pages but this also seems to be pretty inaccurate.
I have a number of servers where space can be limited and backups using Maintenance Plans have occasionally failed because they delete the old backups AFTER they do the latest one. I am writing a script which can check the space remaining and adjust the backup accordingly but the variance I have observed so far with sp_spaceused is too great.
Any ideas welcomed.
DB Size Is 120Gb But Full Backup Is Only 70 GB Advice Needed
Apr 16, 2008
In my enrv. DBA just migrated SQL Server 2000 Databases from WINDOWS 2000 to WINDOWS 2003 Enterprise Edition and the same SQL version. The problem which i need to analyse
1. Why the full backup size is occupying only 70GB when DB size is 120GB?
Here is the situation
Full Backup is taken once every day ---- 70gb
Diff Backup Taken every 3 hrs till 5 PM ----- size is 50GB
Transaction log backed up every 10 min uptill 8 PM ----- not a big size
I am really confused as to why Full DB Backup is taking only 70GB.............Can some one please throw a Light on how the SQL Server 2000 Backup functions.
Is There Any Impact On Server Of Increasing LOG File Size
Jan 4, 2005Thanks to all participants.
I am using SQL Server 2000 with replication object for two location. Log size on publisher go upto 25 times of data file size, I mean 80 MB Data files has maintains 2 GB log file and it is same for all five co's working on same windows 2000 advanced server board.
Since last week server randamly get disconnected from user applications and at that time few tables are not openable at server.
Can any one give a reason ? Why this type misbehaviou done by SQL Server 2000?
Thanks.
Impact Of Empty Tables On Database Size And Performance
Jun 21, 2007 Hello All,
When creating my database I have modeled some of the tables after the Adventureworks sample database.
There are some fields or entire tables in Adventureworks that I do not see an imediate use for, however; I would hate to ommit them to find out later they would have been benificial. (.eg territory table).
In general terms what would the impact be on size and performance of a database which contains tables or fields that do not contain data.
Thanks for your help!
Impact Of Default Column Size Of 8000 At Table Creation
Apr 16, 2003What causes SQL Server 2000 to create tables with default column sizes of 8000 for a varchar datatype??
I would assume this can cause significant performance problems.
(see attached)
Full,DIFF And TRANSACT Backups
Jan 14, 2008 But i have one issue bothering me, it will be great if someone can help me out on this
1. I take full backup on Monday 8 pm which ends at 9.30 PM
2. Diff Backup starts at 10 PM every 2 hrs till Tuesday 7.59 PM
3. Transactional Log backup is happening every 10 min till tueday 7.59 PM
Now when i restore it in the same order i get error that Log in the set is too late to apply. I have recemmonded by team to stop log backup on the time they start full backups and take transactional log backup only after differentials are restored. Now is this a correct suggestion???
Also appendin the differential backup is a good idea or overwriting them is a better approach if Database is backedup every night and Differential occurs every 2 hrs.
Diff. Backup
Oct 24, 2000Can i restore a diff. backup alone without a complete backup?
(what i am trying is this.....there are two different servers at two diff. places....i need to have both servers in sync. at all times.modifications will take place in one server and the modifications have to be reflected in the other server.i could not go for replication as the servers cannot be connected.sending complete backups daily will be a overhead .hence planning to take complete backup once and send diff. backups alone on subsequent days to the other server.
how can i achieve this?)
Diff Backup Help
Mar 22, 2006Dear all
I am new to the MS SQL, my problem is as follows.
I am having a online database on sql 2k.
every 15 days we have to give payout from our system, so we
have a offline server in our office, we take the complete backup of that day & restore the same on the offline server,
& start the payout process.
The problem is that the full backup is a big file & take a lot of time for downloading from online server.
is it possible that we take on diff. backup of that day & will restore the same on the offline server so the file will take less time to download.
but my offline backup is 15 days old, will that update all the records or not?
regards
Abhijit
Diff Backup
Jun 11, 2008In playing with differential backups, i have taken a full last night, 17GB, took my first diff today 16.5GB, took another diff right after, it was still 16.5GB, took another diff right after 16.5 GB. This database has 0 activity during the day, the import takes place @ night, and select's are done to it during the day. Any help would be greatly appreciated
View 3 Replies View RelatedSQL 2005 Std And Scheduling Backups To Include Full, Diff., And Trans. Logs
Feb 28, 2008Regarding backups.
The first available time to do a full backup is at 11:00pm which also applies to diff. backups.
How often does the trans. logs need a back up?
Need Help Troubleshooting Diff BackUp Job
Jan 3, 2008I have a handful of jobs that I need to troubleshoot, but this one will hopefully give me enough insight to do the rest myself. I need to figure out why a Maintenance Plan that performs a Diff Backup on 4 databases, and then a transaction log back up on the 4 databases is failing. I just get the following error message, and I cannot tell what failed.
Executed as user: <SERVER_NAME>SYSTEM. ... 9.00.3042.00 for 32-bit Copyright (C) Microsoft Corp 1984-2005. All rights reserved.
Started: 11:20:05 AM
Progress: 2008-01-03 11:20:05.95
Source: {SOME_STUFF_WAS_HERE}
Executing query "DECLARE @Guid UNIQUEIDENTIFIER EXECUTE msdb..sp".: 100% complete
End Progress
Progress: 2008-01-03 11:20:06.35
Source: Back Up Database (Differential)
Executing query "EXECUTE master.dbo.xp_create_subdir N'D:Program F".: 100% complete
End Progress
Progress: 2008-01-03 11:20:06.35
Source: Back Up Database (Differential)
Executing query "EXECUTE master.dbo.xp_create_subdir N'D:Program F".: 100% complete
End Progress
Progress: 2008-01-03 11:20:06.37
Source: Back Up Database (Differential)
Executing query "EXECUTE master.dbo.xp_create_subdir N'D:Program F".: 100% complete
End Progress
Progress: 2008-01-03 11:20:06.37
Source: Back Up Database (Differential) ... The package execution fa... The step failed.
How can I find out how to fix this problem? And please let me know if I am doing something wrong. (For instance, perhaps those two tasks shouldn't be together.)
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DB Backup From 1 PC && Restore To Diff. PC
Aug 8, 2007Friends,
I have taken backup of a database, of which Data (MDF) & Log (LDF) files are located on "E:...." directory.
Now, I am using the same backup file to restore on another PC which is having no partitions at all. I mean now I have to restore the database using same backup file, of which Data & Log files should be located on "C:...." directory only, as it has no partitions.
This restore process gives me error :
Restore failed for Server 'HSVMMICROFIT'.
Details : System.Data.SqlClient.SqlError: The operating system returned the error '5(Access is denied.)' while attempting 'RestoreContainer::ValidateTargetForCreation' on 'C:Program FilesMicroFitHealthStar v6.0 Server EditionDataMICROFIT_HealthStar_Data.mdf'.
What is to be done, in order to restore the database from the same back up file successfully, regardless whether the original physical location of the MDF & LDF file, is existing on current PC ??????????????
Please try to solve the same for me.... W8ing...
Problems With Diff Backup And INDEXDEFRAG?
May 14, 2004SQL Server 2000 sp3 Enterprise (8.00.818) running on W2K Adv Server cluster.
DB's and backups resided on a fibre SAN attached IBM FAStT 500 storage controller.
I had problems with random restore failures, getting errors such as "3270 Internal Consistency Error" on log restores or on full restores after reporting problems with some of the files. This was fixed (we thought) by disabling the read caching on the FAStT 500 storage controller, per Microsoft's recommendation.
We have a custom-written log shipping solution that maintains a 2nd copy of our user DB on the same system, so there's 700+ backups/restores of various types in the course of a week. After two months of error-free operation, we just got another Internal Consistency Error, but this time on a differential restore, which was a first. Looking back, we realized we were running a DBCC INDEXDEFRAG command on the source DB at the time the differential backup was running. Taking a new differential and using it in the restore sequence worked fine, so clearly the problem was in the first diff backup file.
Anybody else noticed any problems with running DBCC INDEXDEFRAG at the same time as a differntial backup?
Copy Latest Diff Backup From One Server To Another
Oct 9, 2014SQL Server 2012-SP2 and Windows 2008R2
I need to copy the last differential backup file from the production server directory to a data warehouse server directory. There are 3 differential backup files on the directory and I need to grab the latest one. I have the following syntax which work from a batch file but it does not work when I put it into a job step as a cmd even though I remove the double %% to only one %.
echo @off
set path1="192.29.305.213$SqlserverProductionBa ckupsKBR_PROD"
set path2=K:SqlserverDatawarehouseBackupPROD
for /f "tokens=*" %%a in ('dir /b /a-d /o-d "%path1%DIFF*.bak"') do copy "%path1%\%%~a" "%path2%" & goto nextstep
:nextstep
Echo File Copied.
Even when I change it to (only one % for the variable),
for /f "tokens=*" %a in ('dir /b /a-d /o-d "%path1%DIFF*.bak"') do copy "%path1%\%~a" "%path2%"
It does not work..........It runs successfully but no file is copied or I get
Message
Executed as user: PROD23Sqladm024. The process could not be created for step 1 of job 0xEAAF943771FF304A9E7AD8ADAC24F96C (reason: The system cannot find the file specified). The step failed.
I know that the file is there. It works with batch file. Poweshell script can be OK. No SSIS - Not installed
Failure Of Diff Backup Of Master Database
Mar 25, 2008
Hello,
My master database (MS SQL 2005) has simple recovery model, however, when performing diff backup of "all databases", I am getting the following error:
Executing the query "BACKUP DATABASE [master] TO DISK = N'X:\Database Backups\diff backups\master\master_backup_200803251235.bak' WITH DIFFERENTIAL , NOFORMAT, NOINIT, NAME = N'master_backup_20080325123514', SKIP, REWIND, NOUNLOAD, STATS = 10
" failed with the following error: "You can only perform a full backup of the master database. Use BACKUP DATABASE to back up the entire master database.
BACKUP DATABASE is terminating abnormally.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
If I choose to back up only "All user databases", then it performs just fine. Why I cannot run diff backup of master?
Is It Possible Taking Diff Backup Of Mater Database.
Jan 29, 2008Hi all
Is it possible taking Diff backup of master database,If recovery model is FULL..
[SQL 2005] Backup Diff On MSDB Doesnt Work
Aug 1, 2007Hello all,
I need help concerning a differential backup on a MSDB database.
I received this message when I tried to backup it
Log from Windows
Event Type: Error
Event Source: SQLVDI
Event Category: None
Event ID: 1
Date: 8/1/2007
Time: 2:03:37 PM
User: N/A
Computer: XXX
Description:
SQLVDI: Loc=SignalAbort. Desc=Client initiates abort. ErrorCode=(0). Process=9028. Thread=5928. Client. Instance=. VD=GlobalData Protector_(DEFAULT)_msdb_14_00_21.
Log from DataProtector
Normal] From: XXX "(DEFAULT)" Time: XXX
SQL statement:
BACKUP DATABASE [msdb] TO
VIRTUAL_DEVICE = "Data Protector_(DEFAULT)_msdb_06_00_14"
WITH NAME = 'Data Protector: 2007/08/01 0064', DIFFERENTIAL, BLOCKSIZE = 4096, MAXTRANSFERSIZE = 65536;
[Warning] From: XXX "(DEFAULT)" Time: XXX
Error has occurred while executing a SQL statement.
Error message: '<Microsoft SQL-DMO (ODBC SQLState: 42000):bdb>
[Microsoft][ODBC SQL Server Driver][SQL Server]Cannot perform a differential backup for database "msdb", because a current database backup does not exist. Perform a full database backup by reissuing BACKUP DATABASE, omitting the WITH DIFFERENTIAL option.
[Microsoft][ODBC SQL Server Driver][SQL Server]BACKUP DATABASE is terminating abnormally.'
Ive tried to do a full followed straight after by a diff but doent help.
Thank you for your help
SQL 2012 :: Backup Cleanup Of Differential And Log Backups Based On Full Backup?
Feb 19, 2015Using Ola Hallengren's scripts I do a full backup of a database on a Sunday. Then differential backups every 6 hours and log backups every hour. I would like to keep a full week of backups based off the full backup done on Sunday. Is there a way for me to clear out the diff and log folders after the successful full backup on Sunday nights?
View 2 Replies View RelatedSQL Server Admin 2014 :: Restore DB With Full Backup And Transactional Log Backup
Aug 3, 2015Need 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.
SQL Security :: Full Backup Needed After Restoration Of Database Before Transaction Log Backup
Jul 15, 2015We take a full backup in the early morning and hourly transaction log back during the working hours for one database in the production server. The application team made certain changes to the design of the said database in their development server. The backup from the development server was restored to the production server during working hours. After the restoration should we take a full backup before next transactional logbackup? Would the transactional log backup with out a full backup after the restoration of a database be valid?
View 5 Replies View RelatedRecovery :: Differential Backup Much Larger Than Database / Full Backup
Nov 16, 2015I have a database that is just over 1.5GB and the Full backup that is 13GB not sure how this is since we have compression on for full backups and my other full backups are much smaller than there respective databases...Now my full backup is taken every Sunday night and the differentials are taken every 6 hours after the full backup. Now I have been thrown into this DBA role with little to no experience just what I have picked up and read. So my understanding of backups are limited but what I think I understand is that we take a full backup and the differential only captures what changes in the database so my question is why is my database 1.5GB but my differential is 15.4GB? I have others database that are on the same instance and don't seem to have this problem. I also just noticed that we do not rebuild the index before a full backup like we do on other instances...
View 13 Replies View RelatedSelect Data From Diff. Tables On Diff. Servers
Feb 12, 1999I need to write a 'select' statement to fetch data from different tables, which are located on different servers.
Can any one help in writing this 'select' statement with out moving the tables on to same server.
Thanks in Advance.
Murali Raparla.
Does A Full Backup Include Data Changes Made During The Backup?
Nov 29, 2007If my backup starts at 8PM and take 1 hour to complete, will the changes made to the database during that hour be captured in the full backup?
Stated another way, will my backup be a snapshot of:
a) 8PM when the backup started
b) 8PM with some of the changes made between the hour
c) 9PM when the backup finished?
Anybody know the exact way SQL Server handles that logic?
Thanks,
Marc
Differential Backup Fails Because Of Erroneous Full Backup
Jul 19, 2007Hi
I am using the Simple recovery model and I'm taking a weekly full backup each Monday morning with differentials taken every 4 hours during the day.
On Wednesday afternoon, a programmer ran a process that corrupted the db and I had to restore to the most recent differential. It was 5pm in the afternoon and a differential backup had just occured at 4pm. No problem, I figured.
I restored the full backup from Monday morning and tried to restore the most recent differential backup. The differential restore failed. Since I had used T-SQL for the initial attempt, I tried using Enterprise Manager to try again.
When viewing the backup history, I see my initial full backup taken on Monday plus all the differentials. BUT, on closer inspection, I noticed another full backup in the backup history that was taken early Tuesday morning. I can't figure out where this Tuesday morning full backup came from. It wasn't taken by me (or scheduled by me) and I'm the only one with access to the server. My full backups are usually named something like HCMPRP_20070718_FULL.bak. This erroneous full backup was named something like HCMPRP_03a_361adk2k_dd53.bak. It seemed like it was a system generated name. Not something I would choose. To top it off, I could not find this backup file anywhere on the server and when I tried to restore using this full backup, it failed.
Does anyone have any clues as to where this full backup might come from? Does SQL Server trigger a full backup on its own if some threshold is reached?
I ended up having to restore using the differential taken just before this erroneous full backup and lost a day of transactions.
Any insight is greatly appreciated.
How Can I Trigger Full Backup On Tran Log Backup Error?
Aug 8, 2007Hello,
I have MS SQL 2005 server with 300+ databases on it. The application is set up that way that it creates a new database as needed (dynamically). Do not ask me why - I hate this design... So, it can create 3-4 databases a day (random time).
I've scheduled full backup of all databases to run once at night, and it runs just fine. Besides that, I have scheduled tran logs backup of all databases to run every hour. This backup fails from time to time with the following error:
Executing the query "BACKUP LOG [survey_p0886464_test] TO DISK = N'D:\backups\log backups\survey_p0886464_test_backup_200708072300.trn' WITH NOFORMAT, NOINIT, NAME = N'survey_p0886464_test_backup_20070807230002', SKIP, REWIND, NOUNLOAD, STATS = 10
" failed with the following error: "BACKUP LOG cannot be performed because there is no current database backup.
BACKUP LOG is terminating abnormally.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
So, I think what happens is since my full backup of all databases are scheduled to run only once at night, and tran logs every hour, when new database is created during the day, there is no full backup for it, that is why tran logs backup fails. Becuase after the failure, if I run full backup again, then tran log runs just fine afterwards.
I am new to MS SQL Server, I am mostly working with Sybase IQ. Do you know if I can "trigger" full backup every time when new database created to avoid tran lof failure?
Or is it possible to schedule full backup to run if tran log backup fails?
Any advice will be much appreciated.
Should Full Backup And Transaction Backup Be From One Plan?
Mar 11, 2008Hello, everyone:
I just heard that for restore purpose, ths full backup and transaction log backup should be from one maintenance plan. Otherwise transaction log backup files cannot be restored after restoring full backup files.
Is it true? Can anyone offer official documents?
In my system, full and transaction backups are from one maintenance plan. Restores are doing fine. I am not sure that ideal is true or not.
Thanks
ZYT
Should TLog Backup Be Suspended During Full Backup
Mar 15, 2007If I create an adhoc db backup that takes, say 30 miuntes to complete, should I suspend the tran log backups that run every 10 minutes, until the full backup is complete?
Drew
Differential Backup Not Smaller Than The Full Backup
Jun 6, 2007Hi,
Using SQL Server 2005, we have a 2.8Gb database under the Simple recovery model. The database contains ~50M rows and each night ~60k rows are loaded(appended) to the database by a SSIS task.
We configured a Maintenance Plan which is executed once a week to perform a full backup of the database. The resulting backup file is ~2.8Gb, as expected.
We also configured another Maintenance Plan which is executed every day, a few hours after the SSIS task is executed, to perform a differential backup. To our surprise, the resulting backup file is about the same size as the full backup, ~2.8Gb when it should only be a few MB (only 60k rows are added to the database)
When we launch the "Restore Database" wizzard we clearly see the different backup set, Full and Differential but they all have about the same size (same for the physical backup file on disk).
Is there anything we are missing, why are the differential backup that big?
Thanks for any advice.
Full Text Max Size?
Jan 13, 2005Hi,
Does anyone have experience with Full Text catalogs on large tables? We have a full text catalog on a table with about 30 million rows. Acording to BOL, once you get over 1 million you'll need to make some adjustements. Our system works, but we randomly get the following errors with ad hoc queries. The server has 8GB of RAM and 4 3GHz processors. Does anyone have experience working with a table this big? Any suggetions as to what could cause these errors? The only thing I could find was BUG#: 469483 on MS's site, but we're not using any OR clauses
Thanks
Here's the errors....
(query)
SELECT * FROM acc_results ar
WHERE CONTAINS(finding_text, 'cell')
#1
Server: Msg 7619, Level 16, State 1, Line 1
Execution of a full-text operation failed. Not enough storage is available to process this command.
#2
Server: Msg 7342, Level 16, State 1, Line 1
Unexpected NULL value returned for column '[FULLTEXT:acc_results].KEY' from the OLE DB provider 'Full-text Search Engine'. This column cannot be NULL.
OLE DB error trace [Non-interface error: Unexpected NULL value returned for the column: ProviderName='Full-text Search Engine', TableName='[FULLTEXT:acc_results]', ColumnName='KEY'].
#3
Server: Msg 7399, Level 16, State 1, Line 1
OLE DB provider 'Full-text Search Engine' reported an error.
[OLE/DB provider returned message: Not enough storage is available to process this command.]
OLE DB error trace [OLE/DB Provider 'Full-text Search Engine' IRowset::GetNextRows returned 0x80004005: ].