Log File Management While Mirroring
Jan 7, 2008
My question is what is the best way to manage the log file size in a Mirrored database session?
Setting log file to autogrow by %
Setting log file to autogrow by mb
Setting log file to restrict growth by %
Setting log file to restrict growth by mb
The above aforementioned followed by a backup log "dbnamehere" with truncate_only, followed by a DBCC SHRINK file I'm assuming is not an option since the log file is constantly being applied to the mirror.
I ask this because I have a DB that can pass some 1,000,000 rows into just one of my tables a day and I need to make sure about this before I flip the switch.
Anyone's help inthis matter is much appreciated.
Thx,
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Aug 28, 2007
How do I shrink a log file in a database that's been mirrored?
DBCC ShrinkFile(id) reports the size can drop considerably, but even after a CHECKPOINT, it doesn't shrink.
DBCC ShrinkFile('name') says it doesn't find the file name. The properties dialog for the database in SSMS doesn't list any files, even though sp_helpdb says they're there.
Must I disable mirroring, fix DBCC ShrinkSomething, then re-enable mirroring? Can I just pause mirroring?
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Jun 12, 2007
We currently have a 10GB database that is functioning properly mirrored. The only issue we have is that the log files grow very quickly during the early morning hours when a large number of transactions hit our DB from scheduled jobs. We have transaction log backup and shrink job that runs every 3 hours to backup the log and shrink the logical file to 10GB. In most cases this will shrink the log back down to it's desired size of 10GB. However, on some mornings it takes more repetitions of the log backup/shrink job to return the log size back to "normal". During this these times when it does not shrink the DB effectively, I get a report of the job process by email that states "Cannot shrink log file 2 (e_Log) because all logical log files are in use." I run a DBCC OPENTRAN command, and there are no open transactions. Eventually, the log file will return to it's normal size of 10GB through the log file backup job. I have a few questions though.
1. Is this normal behavior during moderate database use?
2. Does mirroring have any effect on the SIZE of the log file?
3. Is it normal for the size of the data file to be smaller than the size of the log file on a heavily used database?
4. Does anyone have any suggestions to better maintain the log file size?
Thank you,
Greg
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Nov 2, 2007
Hi all,
I have the "Northwind" database in my Sql Server Management Studio Express.
In my C:ProSSEAppsSamplesForChapter02Chapter02 folder, I have the following 2 files:
(1) ListColumnValues (MS-DOS Batch File)
sqlcmd -S .sqlexpress -v DBName = "Northwind" CName = "CompanyName" TName =
"Shippers" -i c:prosseappschapter02ListListColumnVales.sql -o
c:prosseappschapter02ColumnValuesOut.rpt
(2) ListColumnValues (Microsoft SQL Server Query File)
USE $(Northwind)
GO
SELECT $(CompanyName) FROM $(Shippers)
GO
When I ran the following SQLcmd:
C:ProSSEAppsSamplesForChapter02Chapter02>ListColumnValues.bat
I got the following "ColumnValuesOut.rpt" with error messages:
'Northwind' scripting variable not defined.
Msg 102, Level 15, State 1, Server L1P2P3SQLEXPRESS, Line 1
Incorrect syntax near '$'.
'CompanyName' scripting variable not defined.
'Shippers' scripting variable not defined.
Msg 102, Level 15, State 1, Server L1P2P3SQLEXPRESS, Line 1
Incorrect syntax near 'CompanyName'.
I copied these T-SQL statements from a book and I do not know how to correct them.
Please help and tell me how to correct these errors.
Thanks in advance,
Scott Chang
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Mar 7, 2008
Hi,
I'm trying to add a new transaction log file to a database with mirroring (high safety, automatic failover).
When I add the new transaction log file via SQL management studio, the mirroring status becomes suspended. When I try to restart mirroring, it attempts to re-synchronize and then goes back to the suspended state. Only after I delete the new transaction log file can I sucessfully restart mirroring.
Can you add a transaction log file to a mirrored database? Any ideas would be appreciated.
Also, I'm not sure if this matters, but I am trying this in my development environment and all 3 instances (principal, mirror, witness) are on the same server. It's a long shot, but I thought maybe both the mirror and principal are trying to create the file at the same location on disk.
Thanks,
Don
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Nov 27, 2008
When Create Mirror Database Server, Where need to store the Transaction Log backup file?I took FULL Backup of my Primary Database, and I restored at my Mirror Server also. When I try to create a Mirror Database."The remote copy of database "<db_name>" has not been rolled forward to a point in time that is encompassed in the local copy of the database log. (Microsoft SQL Server, Error:1412)".I am misplacing the Transaction Log backup file. Where I need to store that file?
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May 3, 2008
Server A = primary SQL DBs (mirroring origination)
Server B = failover SQL DBs (mirroring destination)
For database mirroring a witness is required.
Can the witness live in another instance of SQL on server B?
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Oct 22, 2004
Hi all,
I want to manage tehnical documents (.dwg, .dxf, .doc, xls, .pdf, ...) with SQL Server. I can use the image data type of DBMS but when the many users store their files in database so it network speed is slow.
Can you show me the way to store and open these files in hard disk of server, and filename path of it on server is stored in table of database.
Thanks
Bear
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Dec 6, 2007
Hi there,
I am just starting to learn SQL 2005 Express. After opening the Management Studio Express, I right Click on the Databases node and create new database. then create a name etc. The problem is that when I click ok to create the new database, I get a warning saying that Input a filename. However when I click on filename (after filepath) it is greyed out and I cant add a filename.
Does anyone know how to remedy this?
Regards
DML
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Feb 19, 2007
Issue:
SQL Server 2005 Management Studio displays the old filename in the tab at top if you open a .sql file and then do "file save as". I have upgraded to SP2 in hopes that this behavior would be corrected but to no avail.
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Nov 29, 2006
Hi,
I am trying to connect to a database on a Windows Mobile device using the Management Studio. I am able to select server type "SQl Server Mobile" and navigate to the file on the device. When I try to connect I recieve the following error. Should this work? If so what must I do to allow the registry access?
Thanks,
Ron
Requested registry access is not allowed. (SQL Server Mobile Edition ADO.NET Data Provider)
------------------------------
Program Location:
at Microsoft.SqlServerCe.Client.TdsParser.ThrowExceptionAndWarning()
at Microsoft.SqlServerCe.Client.TdsParser.Connect(String host, SqlCeInternalConnection connHandler, Int32 timeout)
at Microsoft.SqlServerCe.Client.SqlCeEngine.FileExists(String filename)
at Microsoft.SqlServerCe.ManagementUI.Utilities.GetUniqueFilename(String path)
at Microsoft.SqlServerCe.ManagementUI.BrowseForFiles.OnBtnNewDatabaseClick(Object sender, EventArgs e)
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Aug 17, 2007
HiI had to recover my computer but before I did that I grabbed a new version of my mdf file but I don't know how to actually import it into SQL Server Management Studio Express evertime I try to open the file up it just crashes. I rather not have to redue that whole database again. I am a noob so step by step instructions are needed. Thanks
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Sep 5, 2001
Any idea on what this error is?I am not able to open Enterprise Manager in SQL server 7.0.Thanks.
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Oct 12, 2015
Using SQL Server 2008, we would like propose mirroring between two servers of a critical database. Since we initiate, may require to clarify on its purpose and also required changes from application end.Any changes required from OS Level? (I believe both servers IP or Host name should be added in host entries. Mirroring ports should be allowed/open including Principal and mirror server IP Addresses): Windows Team.Any changes required from Application? (Instance name, authentication: user name and its password should be added in web config files): Application Team.Any changes required from Network Team?Also for mirroring both the principal and mirror servers should be with same version, does it only mean SQL Server 2008 versions are enough or does it also mean to say build numbers 10.00.4000 should also be same.URL....
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Sep 15, 2015
I need to set up asyncronous data replication across two clustered instances of SQL 2012 across 2 Datacenters. Both the datacenters have a common domain however the vlans are different. There are only 3 small databases on the primary instance.
any issue in setting up mirroring in this case as vlans are different.
Operating system is Windows 2012.
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Jan 23, 2006
Hello,
Sorry my newbie question, but I didn't find how to install my ready asp2.0 application (VS2005) to the target Win2003 server. I use SQL Express 2005 both in my dev machine and the Win2003 server. I simply copied all the .aspx and .mdf file there and I made a virtual directory in the server's IIS. My application works corretly without the database, but when I try to log-in it says: wrong user name or password. With Management Studio Express I made a SELECT to see my built-in users (I added these users in my dev machine before the deploying), and I found them correctly. But when I try to log-in via my application it seems as if it would be empty. Then I made a simply page with createUserWizard to try adding new users in the server but the SQL said: the database is read-only (in the IIS I enabled all rights (eg. read, write, run)).
Is there a special way to deploy my SQL file or the whole application? Sorry, I am not enough familiar with it
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Sep 15, 2015
One of our database is in simple recovery model, and usually generating more than 220 GB log file (.ldf) every week. We are shrinking log file many times to release the space.
But as its not advisable I am looking for any other options. I suggested to change the recovery model to Full and start T-log backup, but client dont want to change recovery model.
Is there any way to manage Log file of Simple recovery model to maintain disk space?
Will full backup truncate log file ?
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Feb 25, 2008
Hi,
I just started working with Visual Web Devloper 2005 Express Developer and sql server 2005 Express Edition. My web is hosted with 1and1.com. They have informed me that I can't upload the database generated by the developer software and from what I understand, I will import those files into the mssqlserver database on my site. From my limited understanding, this is done from the backup file that is created from my local sql database. I didn't see a way to do that within VWD 2005 so I downloaded SQL Server Management Studio Express. When I opened it I chose the SQLServer (sqlExpress) located on my computer. The connection seems to work fine. However when I go to open a file and open the database that is in my web I get an error that states that there is no editor and to be sure the aplication for file type .mdf has been installed.
I'm not sure where to go from here or if I'm even on the correct path.
Thanks,
Leesha
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Aug 21, 2007
I have a text file with a bunch of zip codes: 99546,"AK","Adak",162.70,55.20,.0099551,"AK","Akiachak",161.39,60.89,.0099552,"AK","Akiak",161.19,60.89,.0099553,"AK","Akutan",165.78,54.14,.00................... I want to import this in Sql Server Express. Is it possible to do this using Management Studio Express? If not, does anyone know a script that would import the data?
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Jan 24, 2006
It works fine and I see the system tables and can make my own tables.
But how do I open a standalone MDF file with it? Or maybe it is a restriction ?
I am trying to get to the database for my personal start kit.
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Jun 26, 2007
I have a an asp.net application running under IIS. this application is using two folders, the virtual directory under C:Inetpubwwwroot and the application phisical folder at C:.
I want to manage this applications .mdf database using microsoft sql server management studio express(iam running sql express with advanced services) which means i have to attach the database to Ms sql server managemet studio express tool.
What i dont know is if i should attach the .mdf file in the physical folder's App_Data folder at C:myapplicationFolderApp_data or the .mdf file in the virtual directory under C:InetpubwwwrootMyapplicationFolderApp_Data
I dont know which of the two i should attach. Where exactly is the running database, the .mdf file in the physical folder or the .mdf file in the virtual directory under wwwroot.
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Oct 9, 2006
Is it possible to run both Sql Server Management Studio: Express and full blown side by side?
I am developing with the full blown product but would like to test Management Studio Express on the same box.
Is this possible?
Thanks
Eric
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Apr 5, 2007
I have recently installed the SQL Server Management Studio Express but I do not find Management Tools in order to create scheduled backups and shrinking of the databases. I was under the impression that this should be included in the Management Studio. I use the SQL 2005 Express for smaller customers who run the SQL on a desktop unit. I need a way to backup the data to a server machine for backup purposes. I have uninstalled and reinstalled to no avail.
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Mar 17, 2007
I have a database in my "App_Data" folder of my visual studio project. I can view it fine in Visual Studio's built-in tools for managing a database attached to a solution. However i recently started playing around with the SQL Server Management Studio Express program. When i attach my database to Management Studio, and try to run my program it crashes. I think it might be a permissions error?!? When i detatch it and reattach it in visual studio it runs fine again. Any suggestions? ThanksJason
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Jul 11, 2007
Hi,My webhost (1and1) is running SQL Server 2000 and their web tool supports the import of .bak files. However, when I try to import my .bak files created in SQL Server Management Studio Express I get the following error:"The backed-up database has on-disk structure version 611. The server
supports version 539 and cannot restore or upgrade this database.
RESTORE FILELIST is terminating abnormally."I have Googled this error and learnt that 2005 .bak files are not compatible with 2000 .bak files. I'm just wondering if there are any work arounds to this or alternative tools that I can create 2000 compatible .bak files from from 2000/2005 .mdf files.Thanks in advance.
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Apr 25, 2008
hello,
I have a question about opening files in the Microsoft SQL Server 2005 Management Studio.
In the old Query Analyzer from SQL 2000 I can open SQL Files via drag & drop (from explorer to QA) or open it with a double click in the explorer. Then the Files opened, if I had actual a connection to a server / database (QA is stared with one file and has a connection to Server/Datebase), with this connection.
Now in Microsoft SQL Server 2005 Management Studio I'll be asked everytime for Server and have to get the database from the database list - it does not connect automaticly to server/database, that is actual connected (I have opened a file with the connection and a connected database in the object explorer).
Someone do not have this problem - but we found no option to set it up.
Any ideas?
thanks &
best regards,
Christian Kiedels
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Mar 7, 2000
Hi All
By mirroring I mean device mirror, since I do not think that there is a database mirror
We only have disk mirror. I also know that SQLServer 7.0 does not provide Mirror, unmirror or remirror. and for this we have to refer to Windows NT disk mirroring.
I need mirroring in both versions SQL Server 6.5 and 7.0
I want to have mirror on another server. I need this for tonight.
Sincerely.
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Apr 1, 2008
I hereby let u know the steps that i undertook for performing mirroring
1. Created a database in Principal server named Mirror1 and one table named tblMirror1.( no values inside the table)
2. Repeated the same in Mirror in Witness
3. Selected the Principal server's database -->right click-->tasks-->mirror
4. from the left hand panel selected Options -->recovery model-->full
5. selected Mirroring from left hand panel-->configure secuirty-->entered mirror and witness name--Success
6. When I click on start mirroring I have an error stating
" Alter failed for database mirror1"
"Database mirroring cannot be enabled because Mirror1 database may have bulk logged changes that have not been backed up etc...."
7. followed this one
BACKUP database mirror1 TO DISK='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBackupmirror1_FULL.BAK'
got the answer as
Processed 160 pages for database 'mirror1', file 'Mirror1' on file 2.
Processed 1 pages for database 'mirror1', file 'Mirror1_log' on file 2.
BACKUP DATABASE successfully processed 161 pages in 0.318 seconds (4.147 MB/sec).
According to sources
Run a restore of this backup on your mirror.
This can be done through the GUI or using a T-SQL command.
The database restore must use the NO RECOVERY option, so the database stays in a loading state.
Also the database name on the mirror must be the exact same name as the principal
RESTORE TestMirror FROM DISK='C:Backup TestMirror_FULL.BAK' WITH NORECOVERY
Hence did the below
RESTORE database mirror1 FROM DISK='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBackupmirror1_FULL.BAK' WITH NORECOVERY
ERROR
Msg 3201, Level 16, State 2, Line 1
Cannot open backup device 'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBackupmirror1_FULL.BAK'. Operating system error 2(The system cannot find the file specified.).
Msg 3013, Level 16, State 1, Line 1
RESTORE DATABASE is terminating abnormally.
HENCE MODIFIED AS
use master
go
RESTORE database mirror1 FROM DISK='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBackupmirror1_FULL.BAK' WITH NORECOVERY
Msg 3201, Level 16, State 2, Line 1
Cannot open backup device 'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBackupmirror1_FULL.BAK'. Operating system error 2(The system cannot find the file specified.).
Msg 3013, Level 16, State 1, Line 1
RESTORE DATABASE is terminating abnormally.
========
Kindly let me know please where am i going wrong
Regards
cmrhema
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Mar 13, 2007
hello
if i run dbcc dbreindex on a database thats the principal in a mirrored pair, will the mirrored database indexes also be rebuilt?
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Mar 27, 2007
i am for the first time creating the database mirroring.I am moving the all the usr databases and everything from test server to a new server called test1.And from that new server i am restoring on the another new server called test2 for database mirroring.But in the test server , the transaction logs are backup for every 15 minutes.So in this case is there a need to move all the logs to test1 and then to test2 for mirroring?? or there is no need to move transaction logs to the new servers at all??
my secnario
------------
server1 server2 server3
-------- ------- --------
test test1 (moving everything from test) test2(mirror for test1 )
all the transaction logs are backup in test for every 15 minutes. so in this case , do i need to move the transcation logs from test to test1 and test2
or there is not need to move at all??
thanks,
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Nov 7, 2007
Can anyone please tell me what mirroring is??
Thanks in ADvance
RKNAIR
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Jan 30, 2008
I have sql server 2005 on my vista laptop.
When i set up database mirroring, do i have to set up Principle,
mirror and witness on seperate servers as well as seperate instances.
Or can i install 3 seperate instances on the same laptop im using and still use mirroring? I have tried to start mirroring with all three instances on my laptop but i receive an error.
Regards
Rob
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Mar 26, 2008
Hi All,
I am trying to set up database mirroring and in the initial phase of database restoring im getting some problem.
the scenario is .
1- I create a TestMirror on server1(which will be principal server) and backup full and transaction logs.
2- create TestMirror in server 2( Which is going to be used as mirror) .
3- restore the full backup of "TestMirror" from Principle Sever with NORECOVERY option.
this step results in a message box showing that the restore was successfull...
but the database explorer( management studio) shows the TestMirror in (restoring ...) state. and no more operations can be performed with this Database. ( because the database is in restoring mode).. please help what this issue is?
Thanks In Advance for any suggestions
-- Krishna
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