SQL 2012 :: Backup Not Compressing
Jan 5, 2015
On a SQL 2012 Enterprise (SP2) instance, I have a database that is 12gb. The size of its backup file is 10gb. With compression I was expecting the backup size to be around 4gb. This database was migrated from SQL 2005 along with other databases that seem to be compressing ok. The instance is set to compression as the default. The database is not encrypted. It contains mainly character data. Compression is also specified in the maintenance plan. Have also trying running backup as a script. The instance is hosted on a virtual server (Windows Server 2012 R2).why this backup is not compressing?
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Nov 10, 2014
I'm having problems backing up my databases to Azure blob storage with compression in that no matter what setting I try (i.e WITH COMPRESSION in T-SQL or enabling backup compression by default on the instance) the backup does not compress.
To test I tried the following:
I performed a backup of one of our smaller databases (that contains real data) without compression to disk - this came out at 13mb.
I performed the same backup (different media set) with compression enabled to disk - this came out at 458kb.
I performed the same backup to a blob in Azure without compression - this came out at 13mb.
I performed the same backup (different media set) to a blob in Azure with compression enabled - this came out at 13mb.
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Apr 3, 2008
Hello All,
I tried to backup my database in SQL Server 2005 (Express edition).
But the size of the backup file was the same as that of the database file.
Is there any means to compress and backup so that the size of the backup file is much smaller?
Regards,
Yuvanya
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Aug 16, 2000
I have a SQL Server 6.5 sp5a database that is approximately 2.5 Gb in size. SQL Enterprise Manager indicates that I have (0) space available and only 58 Mb in data space available. After analyzing the database, there are tables that had many redundant rows of data in some cases 1.4 million records which could be deleted from certain tables. I have gone through the tables and removed all redundant or needless data and in doing so has caused those tables to be very fragmented. Using SHOWCONTIG on certain tables I was able to determine the amount of fragmentation. To correct the fragmentation problem on the tables I went through and dropped all non-clustered indexes and constraints (PK clustered index) and rebuilt them using SORT_DATA_REORG on the clustered Primary Key index. After rebuilding these tables I confirmed that the fragmentation had been corrected and the statistics indicated 100% on Scan Density.
However after defragmenting all tables within the database, the actual database size (or space consumed) has not changed. After deleting all of these records from the database, I should have alot more space available. I have tried "shrinking" the database but the size that it will allow me to shrink it to will not add much more than I currently have. My next thought was to create another "shell" database and then EXPORT the source database (data and all objects) into my "shell". My thinking was that by doing this, the transfer would compress the database into the new database "shell" and then I would probably have to shrink the "shell" database in order to recover data space. I would expect to see a much smaller "Shrink Size" that I could shrink the database down to since all information was transferred in a compressed format.
Here's my problem: Using the DTS Utilities I select my SOURCE Server/Source Database and the DESTINATION Server/Destination Database. The SOURCE and DESTINATION Servers are the same. I select to transfer all database objects, constraints,data. When I select to initiate the transfer routine, SQL Server reports an error stating that "SQL Server Error: SQL Server name format invalid". The name of my SQL Server is: FIRST-DB
Is SQL Server choking on the (-) in my server name?
This doesn't seem to be an issue in SQL Server 7.0. I can use the same naming convention in 7.0 and it works fine.
If or can I change the name of my SQL Server and if so, what repercussions could follow?
Any assistance with this would be greatly appreciated.
Thanks,
Brian McJilton
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Mar 19, 2001
Is it possible to compress the large tables in the database,
like COMPRESS, ARCHIVE options we use to reduce the size of files
stored on any operating system.
I know there is a difference between the file stored on disk and the table created in the database, but currently I am facing space problems wherein, I have to manage my database within the space available, so please advice me if the option is available in SQL Server 6.5 or 7.
I will be happy if I get the solution immediatly as currently I am facing this problem and waiting for your reply.
Thank you
Amol
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Aug 23, 2013
On the SQL Server the Event Viewer shows the same messages and errors every evening between 22:05:00 and 22:08:00. The following information messages are shown for every database:
"I/O is frozen on database <database name>. No user action is required. However, if I/O is not resumed promptly, you could cancel the backup."
"I/O was resumed on database <database name>. No user action is required."
"Database backed up. Database: <database name>, creation date(time): 2003/04/08(09:13:36), pages dumped: 306, first LSN: 44:148:37, last LSN: 44:165:1, number of dump devices: 1, device information: (FILE=1, TYPE=VIRTUAL_DEVICE: {'{A79410F7-4AC5-47CE-9E9B-F91660F1072B}4'}). This is an informational message only. No user action is required."
After the 3 messages the following error message is shown for every database:
"BACKUP failed to complete the command BACKUP LOG <database name>. Check the backup application log for detailed messages."
I have added a Maintenance Plan but these jobs run after 02:00:00 at night.
Where can I find the command or setup which will backup all databases and log files at 22:00:00 in the evening?
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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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Dec 29, 2014
I'm looking to schedule a maintenance plan for my databases which I have done.I'd like this database to be copied to another folder and the name altered to include the file name and the current date time stamp.Is this possible in the scheduled maintenance plan?
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Jul 20, 2005
I have an application with highly compressable strings (gzip encodingusually does somewhere between 20-50X reduction.) My base 350MBdatabase is mostly made up of these slowly (or even static) strings. Iwould like to compress these so that my disk I/O and memory footprintis greatly reduced.Some databases have the ability to provide a compressedtable, compressed column, or provide a user defined function tocompress an indvidual Field with a user defined function[ala. COMPRESS() and DECOMPRESS() ].I could right a UDF with an extended prodcedure if I need to but I'mwondering if there are any other known methods to do this in MS SQLServer 2000 today?--Frederick Staatsfrederick dot w dot staats at intel dot com (I hate junk mail :-)
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Nov 3, 2014
I scheduled automatic backup process but its only showing backup of the only one .sql file in the backup folder. Other created .sql files are not backed up. Why is it so?
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Sep 1, 2014
I'm trying to create a maintenance plan to backup one of my databases however it's failing and I'm receiving the below erorr.I am able to back up other databases without issue to the same location and I have sysadmin permissions.
Message
Executed as user: W2K8SQLSYSTEM. ...ion 9.00.5000.00 for 32-bit Copyright (C) Microsoft Corp 1984-2005. All rights reserved.
Started: 10:13:53 AM Progress: 2014-09-02 10:13:54.01 Source: {A7AE97F0-9186-4385}
Executing query "DECLARE @Guid UNIQUEIDENTIFIER
EXECUTE msdb..sp".: 100% complete End Progress Progress: 2014-09-02 10:13:54.35
[Code] .....
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Oct 21, 2014
I'm wondering if I can take native SQL log backup in addition to DPM backups. We're using DPM for both databases (daily) and logs (every 15min). So, if I take SQL log backup separately, will it break anything in DPM and we won't be able to perform point it time recovery?
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Jan 28, 2015
Looking at the documentation, it would suggest that as well as data files, when a backup file's created it will also be zeroed out unless the service a/c's been given Perform Volume Maintenance.
We take our backups to dedicated backup servers, meaning backup performance should improve significantly if instant file initialization's given to the Service account logins for the source boxes if I'm right.
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Feb 23, 2015
We need to setup an AO availability Group for a database for which a full backup exists but the DB is in simple recovery mode now. If i change the recovery mode to full and try to configure AG will this full backup will be used or do i need to create a new full backup.
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May 13, 2013
I'm setting up my first pair of Sql 2012 servers using AlwaysOn. I set up backups to run on the primary and I understand that you can set up backups to run on both the primary and secondary servers but the secondary will fail. Is there a way I can stop the secondary server from sending out error messages about failed backups? Is it possible to script it so that the server looks at whether it's primary or secondary and turns on or off alerts based on that?
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May 21, 2014
We're changing Netbackup to DPM but not sure if "backup compression default" option should be ON or OFF or doesn't matter.
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Aug 21, 2014
If I try to backup of database in sql 2012 with t-Sql as follows:
Backup database db1
to disk='c:myfullbkup.bak' with init
go
This code works absolutely fine.
But if I try to take backup through SSMS -Task -Backup in object explorer and gave the same path of c: drive or any other folder outside sql default "Backup" folder.It gives error as access denied.This was not the scene in Sql server 2008.
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Sep 2, 2014
When performing a backup I'm reciving the error message: "System.Data.SqlClient.SqlError: Cannot open backup device. Operating system error 5(error not found). (Microsoft.SqlServre.Smo)
This is backing up to a network location and I'm able to backup other database on the same server/instance without error so it shouldnt be a permissions issue?why I can backup some databases to this location and not others?
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Sep 3, 2014
My intention is to make a copy of a database with some data excluded. One way to do this:
- Make a copy-only backup of the source database
- Restore the backup as a new database
- Delete undesired data from the new database
In my case, the source database has two file groups, primary and secondary. The secondary has just one table with huge amount of data and this file group appears as one physical file. Is there any way to make a partial backup, which does not include this file group or table, and it would still be possible to restore the backup to a new database? My point is to avoid copying huge amount of data if it won't be needed.
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Sep 23, 2014
I am using Ola's solution for db backups by the way and its main command is something like this:
sqlcmd -E -S $(ESCAPE_SQUOTE(SRVR)) -d DBgrowth -Q "EXECUTE [dbo].[DatabaseBackup] @Databases = 'MyDatabase1, MyDatabase2', @Directory = N'serverpath', @BackupType = 'FULL', @BackupSoftware = 'SQLBACKUP', @Compress = 'Y', @CompressionLevel = 2, @NumberOfFiles = 5, @Verify = 'N', @CleanupTime = 504, @CheckSum = 'N', @LogToTable = 'Y'" -b
where MyDatabase1 and MyDatabase2 are clients abover 100GB.
Now, I would like to make this dynamic, no user intervention. I already have a table where I'm keeping current and historical data of db sizes.
How can I make this job dynamic, so when a new database passes the 100GB threshold, their names will be part of @Databases parameter? In other words, added automatically, based on my query.
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Jan 29, 2015
I have TDE backup one serverA but There is no backup of certificates or keys from Server A. And no one knows the password used to create those backups. How do you restore the database XYZ at that time on Server B?
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Jan 29, 2015
Looking at the recovery model on MSDN - was under the belief from it that if you set your database to use the simple recovery model, then when you preform a full back up it would truncate the transaction log file but this doesn't seem to be the case?We aren't looking to do a point in time recovery for this particular databse.
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Jul 6, 2015
what is the concept of smart backup in sql ?
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Aug 6, 2015
Proposed configuration:
Using a centralized backup server from which to run SQL backups. (this server is not part of this AVG)
AVG with backup preference set to primary.
SQL backup (daily full and hourly logs run from centralized backup server) with target set to AG Listener name.
Any failover should still target Primary Replica.
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Nov 2, 2015
2 Boxes in HA, identical hardware (VMs) and both utilising identical storage systems (Nimble SANs).Was needing to do a copy only backup of a few databases for an escrow environment we have, so decided to perform this on the secondary box.Small ~10GB ish database first, seemed to be really slow, so opened resource monitor and noticed that disk read / write was getting limited to about 15MB/s so took a little while (the big one is over 1TB)
Tried this again on the primary it was done in seconds disk rate in the order of 250MB/s (same settings re compression etc).. I decided to make a copy of the backup file on the secondary, the copy disk to disk went in the region of 150MB/s , so it appears that SQL Server is the bottleneck?
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Feb 25, 2013
Recently migrated from 2008 to 2012. Everything is working fine; however went to take my first set of backups today and one of them blew up:
Executing the query ...
Backup and restore errors: Unexpected number of disk files associated with database object. Possible cause for that is missing or corrupt cryptokey.bin or detach.log file.
Execution complete
Not finding much online on the specific error.
- Data source is valid
- Can process the cube
- Can query / navigate cube
Next step would be drop/recreate; however this is an older cube that I'd prefer to leave alone at this stage if possible.
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Feb 28, 2014
I have a DB, MDF is about 170GB, log 200GB. When I do a restore of it, the backup takes about 20 minutes to get to 100% but then it just stays there in Restoring Mode.
I have specified the WITH RECOVERY option.
What is happening that it doesn't commit the backup for some reason?
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Mar 27, 2014
I'm working on a project where I need to build a small database and then copy it to a server at the client's site. I can't connect directly, so I have to use a VPN connection and use Remote Desktop, copy the database backup from my machine to the cloud, then download it to the client machine. The project is still in the early stages, and the client is still sending me data in CSV files and Excel spreadsheets. I'm periodically needing to do a complete refresh of the database at the client. I've hacked my way through it a couple of times, but I need to know the proper way to do it. I get errors on the restore step, telling me the file is in use.
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Apr 21, 2014
finding the database size from the backup file.I have SQL 2012 backup file, is there any way to find the estimated database size from the backup.I tried restoring , i got an error saying " no space need additional xxx bytes " ...does this error gives the exact space needed to restore ?
One more question....one of the backup file size is 7.2 GB, when i try to restore it ....it throws error saying it needs 292GB extra space while only 100 Gb is available. How come 392 Gb sized database becomes 7.2 Gb .bak file ?
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May 20, 2014
I'm using SQL Server 2012 Enterprise Edition, and i Enable CDC to started the service.
I've set up CDC on multiple tables, and I see them (under system table)
While the database backup (export file 'BAK'), and imports I do not see the tables of the CDC.
1. Condition restore / backup is full.
2. Carried out an attempt to copy the MDF & LDF files (replace them), to no avail.
How to back up data of these tables.
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Jun 18, 2014
how to backup and restore SQL Server databases using ssms in sql server 2012
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Jun 19, 2014
I am having issues with Restoring the Backup of same Database on to the same server , as i know like many of you will be asking y i need to restore on same server.. Well the need came in that way , now i think i know the problem (i.e) The Orginla DB is there and also i am restoring the same DB again on that server, so .mdf and .ldf will be same .
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Jul 11, 2014
I'm trying to backup my databases to another backup server though I'm receiving the attached error.
the SQL service is logged on as "Network Service"
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