Setup And Upgrade :: Differential Backups Periodically Taking Longer Than Expected Time To Complete
Jun 15, 2015
We are running a SQL Server 2008R2 64-bit database system on a Windows 2012 R2 64-bit Standard system. I have noticed in recent weeks that our differential backups periodically are taking longer than expected to complete. The usual amount of time is about one hour, but on several occasions, it has taken upwards to five hours. The nights when the job takes longer to complete are on Friday.
I did some checking online, and one possible reason for this issue is my scheduling the reindexing of the database on the morning of the Differential backup. For example, this past Friday the reindexing occurred at 1:00 AM with the Differential running at 10:00 PM that night.The article that I read suggested the reindexing, which takes several minutes, if that, to complete, should be scheduled to run just before the Full backup job.
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May 23, 2007
Hello All,
I have SQL Server 2005 installed on my machine and I am firing following query to insert 1500 records into a simple table having just on column.
Declare @i int
Set @i=0
While (@i<1500)
Begin
Insert into test2 values (@i)
Set @i=@i+1
End
Here goes the table definition,
CREATE TABLE [dbo].[test2](
[int] NULL
) ON [PRIMARY]
Now the problem with this is that on one of my server this query is taking just 500ms to run while on my production and other test server this query is taking more than 25 seconds.
Same is the problem with updates. I have checked the configurations of both the servers and found them to be the same. Also there are no indexes defined on either of the tables. I was wondering what can be the possible reason for this to happen. If any of u people has any pointers regarding this, will be really useful
Thanks in advance,
Mitesh
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Sep 8, 2015
Is there a way to extract only installation files to install SQL 2012 client tools from complete media set. I'm interested in SQL MGMT Studio/Profiler/Data Quality services/Configuration tools.
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Feb 4, 2008
The following code is taking longer and longer to run. I am not talking about the gradualy increase in size. this job has been taking 30-40 mins normaly and in the last few days it has gone 1hr to 2 hr to 3 hr... ANy ideas why this is happening? I can not see and other jobs running at this time.
declare @filename varchar(255)
set @filename =
(select top 1 physical_device_name
from ****.msdb.dbo.backupset bs, ****.msdb.dbo.backupmediafamily bf
where bs.media_set_id=bf.media_set_id
and database_name = 'Live_PRD'
and backup_start_date>getdate()-1
and type = 'D'
order by backup_start_date desc)
restore database REPORTS_REP
from disk=@filename
with
move 'LIVE_PRD_Data' to 'T:SOUTHREPORTS_REP_Data.mdf',
move 'LIVE_PRD_Log' to 'U:SOUTHREPORTS_REP_Log.ldf',
move 'LIVE_PRD_Log2' to 'U:SOUTHREPORTS_REP_Log2.ldf',
replace, stats=2, recovery
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Dec 21, 2007
I have installed SBS 2003 Premium with Exchange 2003 SP1 and now I want to install SQL server 2005 workgroup edition.
Heres what I noticed during setup, following the steps of the Server 2005 Workgroup Edition instructions, starting with Upgrading the Sharepoint instance of WMSDE.
Preparing the http://companyweb website:
Step 4. I should make a backup of the data directory within program filesMicrosoft SQL ServerMSSQL$SHAREPOINT directory. However there is no data-directory there, so nothing to backup there. This is probably the reason for all the rest of the issues, however what does it mean, why is there no such directory present? I checked before doing the sql install that by going to http://companyweb I did indeed land on the sharepoint internal website.
Rest goes all normal, until :
Attaching the databasefiles to the new SHAREPOINT instance of SQL server 2005.
Step 4.: go to MSSQL$SHAREPOINTdata. Not only is there no such subdirectory now, the whole MSSQL$SHAREPOINT directory has in fact now disappeared. So steps 4 till 6 cannot be performed now.
Then further to
Enable full text search in Windows Sharepoint services
Step 2. Remark: I get the error message as described there, however the solution would be to start the SQL server (Shareoint service. However that service is up and running
Furthermore when I go to http://companyweb now, I also get the errormessage indicating no connection can be established with the configuration database.
When I check for services, I find that the whole MSSQL$SHAREPOINT service has disappeared from the list of services.
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Mar 13, 2008
Hi All,
My Full backups are taking longer than the usual time on sundays.
I know this has nothing to do with the SQl Server storage engine or Database engine.
i hvae checked there are no jobs ruuning at this time..and this across all the servers sharing the SAN.
How can prove that some thing else is reponsible for this Behvaior and not SQL server.
are there any counters (perfmon) or tools or some sniffers which can tell me what is causing this.
please help.
Thanks in advance.
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Nov 28, 2006
i have an aplication with any problems, the aplication is hang and in the log is
SQL Server has encountered 1 occurrence(s) of IO requests taking longer than 15 seconds to complete on file [d:Program FilesMicrosoft SQL ServerMSSQLdata empdb.mdf] in database [tempdb] (2). The OS file handle is 0x000003DC. The offset of the latest long IO is: 0x00000016930000 and the aplication log is
E R R: [Microsoft][ODBC SQL Server Driver][Shared Memory]ConnectionWrite (WrapperWrite()). NUMERO -2147467259 FUENTE Microsoft OLE DB Provider for ODBC Drivers
can yu help me
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May 2, 2002
I know that the differential backup will only back up information that was changed since the last full database backup, but I have process that I need to implement and need to know if differentials will work.
1. Perform full database backup on Sunday.
2. Perform differential backups Monday thru Friday (twice a day).
3. Perform a database restore on the following Sunday from the backup taken on the previous Sunday.
4. Perform differential backups Monday thru Friday.
At this point I would repeat steps 3 and 4 for the following weeks.
My question is this. Since I didn't actually perform a backup in step 3, but instead performed a database restore, will the differential backup in step 4 backup all of the information changed since step 1??..or will it backup all of the information changed since the restore in step 3? I'm hoping it will only back up the information changed since step 3.
Thanks!
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Jun 25, 2002
I perform a full database backup at night with a differential backup at noon each day. I created 2 devices to do this. Northwind (for full backups) and northwind_diff (for diff backups).
When the differential is run, it appends each day's noon backup to the northwind_diff file so the file doesn't really reflect only changes - it just keeps growing and growing. I'm using the following syntax to perform the diff backup.
backup database northwind to northwind_diff with differential
Is there a way to initilize the backup device(file) prior to the differential backup being done?
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Jul 23, 2001
Hello
I am using SQL 7 database maintenance plans to create full backups for all the databases on my server every night which expire after 7 days, and transaction log backups every hour on some of the databases which also expire after 7 days.
I want to add differential backups but the maintenance plan doesn't allow me to add those. How do I add them, and what naming conventions should I use? I want them to expire after 7 days, but want to backup every 4 hours.
Thanks
Steve.
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Aug 27, 2001
Hi, I would like to do the following;
Mon - Full Backup
Tue - Differential
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Aug 28, 2001
Hi, is anyone using differential backups? I would like to have separate differential backups but right now it keeps appending to one big differential backup. If they are separated the older backups can be deleted. How do you do this?
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Sep 12, 2001
I am setting up differential backups thru EM every 4 hours. I append to the existing file. Is there a way to tell it to delete the files older than 2 days thru EM. I looked at the job, there is now way to do this.
Thru Mainplans you can create differential backups, it doesn't show you the option..
Any clues will be appreciated.
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Sep 27, 2007
Hi Folks!
I did a few searches and found some interesting threads but was not able to understand much. :)
I recently jumped from support to a DBA position and am learning about SQL Server 2000.
My dilemma: We have a SQL 2000 server with about 500GB's worth of databases that has some jobs from the app locking up due to tape backups. I am performing Full nightly and 1/2hour transaction SQL backups. We run daily differential and weekly full tape backups. It is taking 14 hours to run tape backups daily, causing some of the application jobs to fail. So to test it, I stopped the tape job to run one night and none of the App jobs failed.
So, I am hoping that if I start running nightly differentials, weekly fulls, and 1/2 hour trans, it should work. However, I am not very familiar with Differential jobs as till today i have been using maintenance plans. :confused:
My ideal scenario is this: Differentials start on Sat morning and stop before the weekly backup runs on Friday and then delete the older file when starting a new one. Is this possible? how?
C= OS, D=Backup (Raid 0), G=Data (Raid 5), E=Logs(Raid5).
Any help would be appreciated, and obviously if I have missed some piece of information, please feel free to ask.
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Sep 13, 2007
Hello,
I see the following error on the sql server log of one of our sql servers running sql 2000 with sp4.
SQL Server has encountered 1964 occurrence(s) of IO requests taking longer than 15 seconds to complete on file [h: empdb.mdf] in database [tempdb] (2). The OS file handle is 0x00000534. The offset of the latest long IO is: 0x0000002b09e000
Any idea as to what might be causing this error. Appreciate any comments.
Thanks!
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Jan 11, 2002
Hi all
Can anybody explain why the size of a differential backup in SQL7 is MUCH higher than the one in SQL2000?
Do this test yourself: do a full backup of the pubs database in SQL7 , it will be around 1.5mb, do a differential backup, and it will be 2mb or 4mb.
If you do the same tests in SQL2000 the differential backup is around 200K.
thanks
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Jan 11, 2001
PLEASE HELP...
WE ARE DOWNLOADING THE BACKUP FILE FROM OTHER BRANCH OFFICE AND THE FILE SIZE IS GROWING LIKE HELL SO I AM CHANGING THE BACKUP POLICY TO DOWNLOAD THE DIFFERENTIAL BACKUP FILES EVERYDAY. BUT EVEN THE FILE SIZE GROWS DAY BY DAY UNTILL WE TAKE THE FULL BACKUP THERE. SO I WANT TO TAKE A DIIFERNETIAL BACKUP AND THEN IMMIDIATELY A FULL BACKUP AT THE REMOTE SERVER END. SO MY NEXT DIFFERNTIAL BACKUP WILL HAVE THE DATA OF ONLY PREVIOUS DAY.
FOR THIS I AM SCHEDULING A JOB WHICH FIRST TAKES A DIFFERENTIAL BACKUP AND THEN IMMIDIATELY FULL BACKUP EVERYDAY AT 12.00AM.
BUT I HAVE A CONCERN.. WHILE TAKING THE DIFFERENTIAL BACKUP ANY TRANSACTIONS THAT ARE TO BE COMMITED WILL NOT COMMIT UNTIL THE DIFFERENTIAL BACKUP COMPLETES. BUT IMMIDIATELY I AM STARTING FULL BACKUP. IS THERE ANY CHANCE THAT A TRANSACTION GETTING COMMITTED IN BETWEEN THESE TWO STEPS. IF SO IS THERE ANY WAY .. NOT RELEASE THE DATABASE UNTILL THESE 2 BACKUPS ARE COMPLETED?? I AM RUNNING IT AS A JOB..
ANY SUGGESTION??
THANKS IN ADVANCE.. :-)
KUMAR
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Feb 14, 2002
I am trying to set up a process where a differential backup is taken daily and applied to another DB. For some reason I cannot get the diff backup to restore. The full DB backup restored fine.
Server: Msg 3136, Level 16, State 1, Line 4
Cannot apply the differential backup on device 'diff' to database 'test'.
Server: Msg 3013, Level 16, State 1, Line 4
Backup or restore operation terminating abnormally.
Any suggestions? Thanks!
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Oct 19, 2005
Our production backup schedule is, FULL backup once a month and a DIFFERENTIAL backup every day.
We are starting the FULL and DIFFERENTIAL backups using something similar to
FULL Backup
backup database @DB to disk = @BackupFile
DIFFERENTIAL backup
backup database @DB to disk = @BackupFile WITH DIFFERENTIAL
A full backup was done on 10/6 and the DB size was 48GB. Since then we have been doing DIFFERENTIAL backups. I recently looked at the DIFFERENTIAL backup directory and found something I think is interesting.
10/07/2005 04:00 AM 8,604,160 prodDB_Diff_200510070400.BAK
10/08/2005 04:00 AM 1,144,320 prodDB_Diff_200510080400.BAK
10/09/2005 04:00 AM 1,134,080 prodDB_Diff_200510090400.BAK
10/10/2005 04:00 AM 21,185,024 prodDB_Diff_200510100400.BAK
10/11/2005 04:00 AM 7,119,360 prodDB_Diff_200510110400.BAK
10/12/2005 04:00 AM 163,669,504 prodDB_Diff_200510120400.BAK
10/13/2005 04:00 AM 14,743,040 prodDB_Diff_200510130400.BAK
10/14/2005 04:00 AM 120,875,520 prodDB_Diff_200510140400.BAK
10/15/2005 04:00 AM 1,216,000 prodDB_Diff_200510150400.BAK
10/16/2005 04:00 AM 5,139,968 prodDB_Diff_200510160400.BAK
10/17/2005 04:00 AM 4,277,760 prodDB_Diff_200510170400.BAK
10/18/2005 04:00 AM 2,778,624 prodDB_Diff_200510180400.BAK
10/19/2005 04:01 AM 750,575,104 prodDB_Diff_200510190400.BAK
My understanding of DIFFERENTIAL backups from books online is
"Specifies the database or file backup should consist only of the portions of the database or file changed since the last full backup"
MY Question:
Assuming I am understanding this correctly, all DIFFERENTIAL backups are independent of one another. If a failure happens, all I have to do is restore the latest FULL backup and then
restore the latest DIFFERENTIAL backup.
So, I would think the sizes of the backup files should be in ASCENDING order. Why is the size of the backup file from 10/15/2005 (1,216,000 bytes) smaller than the backup file from 10/14/2005 (120,875,520 bytes).
Assuming a crash happens on 10/15 5AM, I would restore the full backup from 10/6 and then restore the DIFF. backup from 10/15 4AM (Which will apply approx.. 1,216,000 bytes of data). So where has the data in the backup file from 10/14/2005 gone (120,875,520 bytes)?
Thanks
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Mar 28, 2007
Does the full and differential backups have to be in the same location or can I do a once a week full backup on one drive and everyday differential backups on a different drive?
Thanks
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Feb 12, 2008
Hi,
On our SQL Server 2005 SP 2 i recently updated our Backup Plan.
I now make a Full backup every night, Differential backup every hour and Transaction log backup every 15 minutes.
This all works fine all the time except sometimes when the differential and transaction log backups want to run on the same time and then 1 of the 2 fails.
The error i get is code 0xC0010018. Error loading a task.
I made 1 Maintenance Plan with a subplan for each backup type (Full, differ....), so i can schedule them the way i want.
Searched the internet for an answer but i couldn't find it. The tasks only fail when the run simultaneous. Starting them manually always works.
Anybody has an idea what i need to do to get this working properly?
Thanks!!
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Jul 11, 2015
Getting "The specified network name is no longer available" during SQL Backups dumping to Network share.
- problem started occurring on July 3, 2015
- our Ola Hallengren backup solution deployed to over 150 SQL Servers.. was running fine for almost 2 years
- Occurring in multiple SQL Server environments: W/Server 2012 Ent, W/Server 2008 Ent, SQL 2012 Ent, SQL 2008 R2 Ent
- We're utilizing latest Ola Hallengren backup solution (Jan 2015 release)
- Dumping to network share (jobs running under SQL Agent account w/ local admin & sysadmin on server and full rights to Network Share
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Oct 15, 2014
I am using Ola Hallegren's scripts to do backups. He uses @Cleanup Time to delete backups older than a certain number of hours. My situation is I do a full backup of a database on Sunday and then I have a few Differentials and then log backups for the rest of the week. When Sunday rolls around again and my full backup is finished, I would like to delete all the differential backups and log backups. Any way that I could accomplish this using Ola's scripts?
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Dec 7, 2007
Hello SQL Server 2005 SE sp1.
Unable to take differential or transaction log backups. Get the error message a full backup need to be down. Have done a full backup. Immediately upon completion of full have tried diff and transaction log. Still no luck
Other databases on server are fine. Full backup will restore.
Thanks,
Joe
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May 12, 2008
Hi sql server experts.
This is a beginners question.
Let's say, I run a full backup at 4:30 am it takes usually 35 minutes to finish.
I want to schedule a differential backup to run every hour.
Should I start this job at 5:10 after the full backup finishes? or it doesn't matter?
I am confused about timing.
Let's say my full back up takes 1 hour to finish, that means that when the differential backup runs the full backup will be still running, so in case I need to restore the database, can I use this differential from 5:10 or the differential from 6:10.
Same issue with the transactional, the job runs every 30 minutes, should I started after the differential is done?
I am so confused, what happens with the backups jobs that run while other backups are running?
Is this something that should never happen.
Please advise.
Thanks
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Jul 16, 2007
We have a SQL 2K5 10GB database that, as part of the recovery plan, gets a differential backup every six hours. Log file backups occur every hour, and a full backup is done every 24 hours. Over the weekend, the differential backup produced a 55GB backup file which caused us a lot of issues besides disk space usage (log backups couldnt finish, mirroring broke, etc.). This is also the max growth size that the log file is set to. There are no errors in the ERRORLOG, or in the job history. It's as if the backup was successful, which I assume it was, but the file was sparse.
I should mention that our full backup is typically 10GB, log file backups are typically 100 to 500MB, and the diff backup is generally 1GB to 3GB.
Has anyone experienced this issue before?
What causes it?
How do we resolve it?
Thank you in advance for your help,
Greg
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May 29, 2014
Up until a couple of days ago all my maintenance plans were working.
Now they are all failing with the following errors -
Message
Executed as user: MHS2sql2008. Microsoft (R) SQL Server Execute Package Utility Version 11.0.2100.60 for 64-bit Copyright (C) Microsoft Corporation. All rights reserved. Started: 10:07:02 Progress: 2014-05-29 10:07:03.20 Source: {CE851AA2-045F-429A-885E-E60E75A38639} Executing query "DECLARE @Guid UNIQUEIDENTIFIER
[Code] ....
The package execution failed. The step failed. Now I have changed the SQL Server Agent service account to use a network account called "sql2008".Stopped and started the Agent service.
The account has access to the folders it is trying to back up to. It's a full admin on the sql box and the box where I am trying to backup to?
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Jul 14, 2006
Running SQL Server 2005 Standard Edition.
Database is in Full Recovery mode.
I have full backups scheduled weekly, differentails scheduled daily and tran log ackups scheduled for every 15 minutes.
The tran log backups only work for the first 40 minutes or so after the daily backup. Once the daily has occured, the tran backups will work again, but for only 40 minutes.
I run consistency checks on the db daily and there are no errors.
The error returned from the tran log backup is 'BACKUP LOG cannot be performed because there is no current database backup'
Any thoughts would be appreciated.
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Jul 23, 2015
We're doing upgrades from SQL 2008 R2 to SQL 2014. This is blocked due to RS is installed but not configured. Our desired action is to uninstall RS and proceed with the upgrade. But when setuparp.exe is raised, it does not list all the features on the 'Select Features' page. In fact, it only lists the last 2 shared features (SQ Client Connectivity SDK and Microsoft Sync Framework). However, all items appear to be listed on the 'Select Instance' page including RS. I've seen this issue on 2 of our SQL 2008 R2 Servers already.
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Nov 15, 2015
I'm trying to install SQL Server Management studio 2012 on my Windows 7 (x64) standalone laptop. When I click "New SQL stand-alone installation..." it runs a Setup Support Rules check and always fails "Setup Account Privileges". I've looked into the error and I keep getting that I need to change security rules but I don't have that option in window 7. How do I get around this without having to resort to a computer running Windows Server?
I have Visual Studio 2013 premium installed along with Localdb v11. I just want to connect and manage my database engine through SSMS when developing any application.
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Apr 24, 2015
I am running a number of SQL instances on my PC. Within the network, I have think server with various System Center components. For compatibility reasons, some features of System Center 2012 R2 had to be delegated to different SQL databases. My question is, because there is now more than one IP address on my system, and each instance of SQL is assigned to its own IP, is there a way to setup DNS and SQL so the namespace points to the desired IP address? For Instance:
MSSQL2008 instance is set to run on = 11.12.13.1
MSSQL2012 is set to run on = 11.12.13.2
IN DNS:
A Record: Mike-PC = 11.12.13.1
A Record: Mike-PC = 11.12.13.2
If I want to use MSSQL2008 by specifying Mike-PC as the DNS name, how would I do that with 100% accuracy? If there is another way to get the job done, I am more than willing to approach this differently.
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Feb 19, 2015
Using 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?
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May 16, 2007
We moved a 2000 database to another platform by restoring the database. It took a lot longer than I expected. Would it take less time to restore it a second time to the same target database since the allocations are already there?
Thanks
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