Replications With 200GB Database
Jun 5, 2008
I’ve recently taken on a SQL Server related assignment with a client running a very large database in a very poor environment.
We have a 200GB database with virtually no failover support. I’m interested in transactional replication, hardware redundancy, failover support and find that before moving forward on that we probably need to seriously re-evaluate our whole logical and physical design. My experience is more on the TSQL side rather than full dba hardware, optimization, tuning areas. Any suggestions for quickly ramping up my skills on the dba side (books, courses, etc.) and also recommendations for short term support resources would be appreciated. I’m want to make sure I cover all my bases with regard to future scalability, disaster recovery, high availability etc.
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May 1, 2007
The column I'm adding needs to be part of the clustered PK (it will be the last of three columns) so I need to recreate all the indexes.
My DB is set for FULL recovery mode ALLOW_SNAPSHOT_ISOLATION ON. I've tried two methods so far.
Method 1:
BEGIN TRANSACTION
CREATE TABLE dbo.Tmp_copyoftablewithnewfield
(
) ON PRIMARY
IF EXISTS(SELECT * FROM dbo.originaltable)
EXEC('INSERT INTO dbo.Tmp_copyoftablewithnewfield (<original fields>)
SELECT <original fields> FROM dbo.originaltable WITH (HOLDLOCK TABLOCKX)')
GO
DROP TABLE dbo.originaltable
GO
EXECUTE sp_rename N'dbo.Tmp_copyoftablewithnewfield', N'originaltable',
'OBJECT'
GO
<recreate PK constraint>
<rebuild indexes>
COMMIT
Pro's: Lets me add the new field in the spot I'd like it (not a big deal)
Con's: Tons of wasted space and time. It took about 15 hours.
Method 2:
SET XACT_ABORT ON
GO
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
GO
BEGIN TRANSACTION
<drop PK constraint>
<drop indexes>
ALTER TABLE [dbo].[originaltable] ADD
[newfield] [tinyint] NOT NULL CONSTRAINT [DF_originaltable_newfield] DEFAULT
((1))
<recreate PK constraint>
<rebuild indexes>
COMMIT TRANSACTION
Pro's: No making a copy of the entire table taking up 200GB more space in the db data file
Con's: My tempdb grew to accomodate the row versioning info for every row in the 200GB table. It took over 30 hours.
A lot of time and disk space is wasted with both.
Since the db is going to be unavailable to users I have some flexibility here. I was considering turning ALLOW_SNAPSHOT_ISOLATION OFF and then trying method 2 again which should stop the versioning in tempdb and then turning it back on.
I was also curious if setting the database recovery mode to SIMPLE would cut down on db log usage and then I could set it back to FULL when done.
Do these really need to be in a transaction? If there's some hardware failure or something unexpected I can just restore from backup and do the conversion again. If the presence of the transaction itself is causing more disk usage for logging or any other slowdown, I think I'd rather do without.
Given the amount of time this conversion takes, I wanted to get some
feedback other than "just try it" before doing any new tests.
Thanks.
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Jul 17, 2007
Dear all,
I have 3 server in 3 locations, I need to add one Field to one of my table. When I try with "sp_repladdcolumn" I got this error
"Schema replication failed because database <Database name> on server <Server Name> is not the original Publisher of table <Table name>"
please help me on this.
Thanks
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May 30, 2008
We have two seperate domains (connected via a VPN Tunnel over the internet) We want to replicate one table with a push publication between these two domains (both have sql server 2005 default instances) how do you figure out what ports to open up in order to be able to do transactional replication (of one table) between them????
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Apr 26, 2006
Hi.
I have to know how SQL Server 2005 implemens the diferent kinds of replication... like update-anywhere, workflow, snapshot...
Could someone help me find these answers?
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Sep 6, 2006
Dear All,
Greetings!!
I have installed SQL server 2005 Express and SQL server Mobile, and I was reading the Books online section to find out how to maintain the two databases consistancy.
Found : replication Option.
Problem : It only shows Local Subscriptions in SQL Server and In SQL Server Mobile only Subscription. I dont get a Publication Option.
Please correct if Wrong : SQL Serv Mobile is the one should Publish and SQL Serv hould Subscribe ya?
Please help me to sort this out.
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Oct 21, 2005
I have just setup my first Transactional replication between two
servers. Next I needed to test what would happen if the live server
went down.
I disconnected the live server and connected it to the backup server
(doing all the ip setup bits as well). Then I tried running my web app.
The web app ran great. I can look at the data that was replicated. My
problem is that I cannot seem to add any data. Ever time I try to run a
stored procedure, the web app crashes with 'sa' account login failed. I
tried running the stored procedures through SQL Query Analyzer, and it
says the same thing.
I know there is no problem with the sa account, as I can view the data
using this. There are no permissions set on any of the objects in the
database. The only thing I can think of is that the replication has
somehow disabled the ability to add data to the replicated database.
Can anyone point out what is happening?
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Jan 21, 2005
Hi,
I need a solution ( if this is possible) to automatically generate create scripts for my replications on our live server and put that into a file.
I dont have permission to scrip that from the Enterprise Managger, but the support have and can make a job in the live server for this.
So that would be enough for me to put a job to the live server what puts the scripts to a file.
I want to use the same replications in my test environmnet, and they are always changing and I dont want to wait for the support.
I have an idea, but I still dont try it:
If I run a trace, when i push the generate sql script button, maybe I can get the code for the generating the create script.
:confused:
Is there a simple solution for this problem, or I have to get it from the trace ?
Thanx!
Tsabi
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Sep 18, 2006
Hi All,
i need help. i have a merge replication running every 10 minutes. the replication is for 1 database consisting around 50 tables and all 50 tables are marked as article to be published. let's say the publisher is server A and the subscriber is server B. for explanation purpose, let's pick 1 table from the database, let's say table X
in server A, there are applications running that insert and update table X. in server B, there are applications running that select and delete table X. table X at average, has tens of thousands rows.
now comes the problem, every 10 minutes whenever the sql merge agent is running, sometimes whenan application insert a row to table X in server A, it returns an error : "Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.". when i stop the replication (delete the subscriber), the row insertion to table X in server A seems fine. then i come to a doubtful conclusion, that the timeout error happened because when the insert statement executes, the replication locks the table for merging.
could somebody verify this? if my conclusion is true, then how am i suppose to do this? (see bold text above). really2 appreciate the help
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Nov 15, 2007
We replicate a SQL2000 database (DataBaseA) to a SQL2000 database (DataBaseB) by using the Restore function and hasn't change its logical name but only the physical data path and file name. It is running fine for a year. We use the same way to migrate the DataBaseB to a new SQL2005 server with the Restore function and the daily operation is running perfect. However, when we do the Backup of DatabaseB in the SQL2005, it just prompt the error message
System.Data.SqlClient.SqlError: The backup of full-text catalog 'DataBaseA' is not permitted because it is not online. Check errorlog file for the reason that full-text catalog became offline and bring it online. Or BACKUP can be performed by using the FILEGROUP or FILE clauses to restrict the selection to include only online data. (Microsoft.SqlServer.Smo)
Please note we left the DataBaseA in the old SQL2000 server.
Please help on how we can delete the Full-text catalog from DatabaseB so we can do a backup
Many Thanks
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Oct 14, 2015
I have database on localhost and i want to show this data on my website. I want to create a database online and want to sync with Local Host. Can it be possible syncing data automatically after some interval?
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Oct 9, 2007
yes,I have an error, like 'The database file may be corrupted. Run the repair utility to check the database file. [ Database name = SDMMC Storage Cardwinpos_2005WINPOS2005.sdf ]' .I develope a program for Pocket Pcs and this program's database sometimes corrupt.what can i do?please help me
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Aug 18, 2005
I want to create a duplicate database in sql 2000 using asp.net from a webform
I created a database using CREATE DATABASE .......
But how to copy tables, views, stored procedures to newly created
database from old using asp.net from webform
Is there any another method to create a duplicate database with another name
from existing database on same server ?
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Sep 2, 2007
Greetings, I have just arrived back into the country (NZ) and back into ASP.NET.
I am having trouble with the following:An attempt to attach an auto-named database for file (file location).../Database.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
It has only begun since i decided i wanted to use IIS, I realise VWD comes with its own localhost, but since it is only temporary, i wanted a permanent shortcut on my desktop to link to my intranet page.
Anyone have any ideas why i am getting the above error? have searched many places on the internet and not getting any closer.
Cheers ~ J
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Apr 9, 2008
I have a problem when i restore my .DAT_BAK file. I am getting error like "The backup set holds a backup of a database other than existing database. Restore Database is terminating abnormally".
I tried by using
RESTORE DATABASE <DATABASENAME>
FROM DISK = 'D:DATAMYTEST.DAT_BAK'
WITH MOVE 'VZAI_DATA' TO D:PROGRAM FILES..MSSQLTEST.MDF',
MOVE 'VZAI_LOG' TO D:PROGRAM FILES..MSSQLTEST.LDF',
REPLACE
And also i tried like
RESTORE DATABASE <DATABASENAME>
FROM DISK = 'D:DATAMYTEST.DAT_BAK'
WITH REPLACE
When i use like this,
RESTORE FILELISTONLY FROM DISK = 'D:DATAMYTEST.DAT_BAK'. I am able to get the output as LogicalName, PhysicalName, Type, FileGroupName, Size, etc.
Can i anyone please help me out?
Thanks in Advance,
Anand Rajagopal
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Oct 2, 2007
I am using SQL express and Visual web developer on windows Vista.
When I try to create a new database the following message appears.
CREATE DATABASE permission denied in database master (error 262)
I log on to my computer as an administrator.
Help appreciated
Prontonet
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Jan 14, 2008
Hi all,
From the http://msdn.microsoft.com/en-us/library/bb384469.aspx (Walkthrough: Creating Stored Procedures for the Northwind Customers Table, I copied the following sql code:
--UpdateSPforNWcustomersTable.sql--
USE NORTHWIND
GO
IF EXISTS (SELECT * FROM sysobjects WHERE name = 'SelectCustomers' AND user_name(uid) = 'dbo')
DROP PROCEDURE dbo.[SelectCustomers]
GO
CREATE PROCEDURE dbo.[SelectCustomers]
AS
SET NOCOUNT ON;
SELECT CustomerID, CompanyName, ContactName, ContactTitle, Address, City, Region, PostalCode, Country, Phone, Fax FROM dbo.Customers
GO
IF EXISTS (SELECT * FROM sysobjects WHERE name = 'InsertCustomers' AND user_name(uid) = 'dbo')
DROP PROCEDURE dbo.InsertCustomers
GO
CREATE PROCEDURE dbo.InsertCustomers
(
@CustomerID nchar(5),
@CompanyName nvarchar(40),
@ContactName nvarchar(30),
@ContactTitle nvarchar(30),
@Address nvarchar(60),
@City nvarchar(15),
@Region nvarchar(15),
@PostalCode nvarchar(10),
@Country nvarchar(15),
@Phone nvarchar(24),
@Fax nvarchar(24)
)
AS
SET NOCOUNT OFF;
INSERT INTO [dbo].[Customers] ([CustomerID], [CompanyName], [ContactName], [ContactTitle], [Address], [City], [Region], [PostalCode], [Country], [Phone], [Fax]) VALUES (@CustomerID, @CompanyName, @ContactName, @ContactTitle, @Address, @City, @Region, @PostalCode, @Country, @Phone, @Fax);
SELECT CustomerID, CompanyName, ContactName, ContactTitle, Address, City, Region, PostalCode, Country, Phone, Fax FROM Customers WHERE (CustomerID = @CustomerID)
GO
IF EXISTS (SELECT * FROM sysobjects WHERE name = 'UpdateCustomers' AND user_name(uid) = 'dbo')
DROP PROCEDURE dbo.UpdateCustomers
GO
CREATE PROCEDURE dbo.UpdateCustomers
(
@CustomerID nchar(5),
@CompanyName nvarchar(40),
@ContactName nvarchar(30),
@ContactTitle nvarchar(30),
@Address nvarchar(60),
@City nvarchar(15),
@Region nvarchar(15),
@PostalCode nvarchar(10),
@Country nvarchar(15),
@Phone nvarchar(24),
@Fax nvarchar(24),
@Original_CustomerID nchar(5)
)
AS
SET NOCOUNT OFF;
UPDATE [dbo].[Customers] SET [CustomerID] = @CustomerID, [CompanyName] = @CompanyName, [ContactName] = @ContactName, [ContactTitle] = @ContactTitle, [Address] = @Address, [City] = @City, [Region] = @Region, [PostalCode] = @PostalCode, [Country] = @Country, [Phone] = @Phone, [Fax] = @Fax WHERE (([CustomerID] = @Original_CustomerID));
SELECT CustomerID, CompanyName, ContactName, ContactTitle, Address, City, Region, PostalCode, Country, Phone, Fax FROM Customers WHERE (CustomerID = @CustomerID)
GO
====================================================================================
I executed the above code in my SQL Server Management Studio Express (SSMSE) and I got the following error messages:
Msg 911, Level 16, State 1, Line 1
Could not locate entry in sysdatabases for database 'NORTHWIND'. No entry found with that name.
Make sure that the name is entered correctly.
===============================================================================================================
I know I recreated the NORTHWIND Database from a different Database before and I did not do anything for the entry in sysdatabases. How can I change the entry in sysdatabases for database 'NORTHWIND' now? Please help and advise.
Thanks in advance,
Scott Chang
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Mar 27, 2007
hii want to copy one database table to onther database table using script?my database is ms-sql server 2000
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Jan 11, 2006
I recently added a new user to my database. Now I want to delete that user, but I keep getting the error above. What do I need to do to delete my recently added user?
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Sep 10, 2012
We have a SQL database that uses Active Directory with Windows Authentication. Can users that are members of the Active Directory group that has read/write access to the SQL database create ODBC connections to access the database directly and update the data? They dont have individual logins on the server. They are only members of the Active Directory group that has a login?
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Mar 8, 2015
I had to to relocate the database log file and I issued an Alter database command but by mistake I put a space in the file name as below. The space is at the beginning file name. Now I am unable get the database loaded to SQL Server. The database has 2 replications configured, so deleting and re-attaching the database means the replication needs to be re-configured. Is there an alternative way to issue a command to update the database FILENAME ? Not sure if this can be edited in master database (sys files).
ALTER DATABASE [User_DB]
MODIFY FILE (NAME = User_DB_log, FILENAME = 'I:SQLLogs User_DB_log.ldf')
GO
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Mar 31, 2007
I created the db with the attached script and I am able to access ituntil I reboot the server. I've tried enabling flag 1807 via the SQLserver service and the startup parameters of the instance. In allcases the database always come up suspect after a reboot. There wasone instance where I was able to recover, but I am not sure how thathappened.Does anyone have an idea of how I can reboot the server without thedatabase becomming suspect?USE MASTERGODBCC TRACEON(1807)GO--DBCC TRACEOFF(1807)--DBCC TRACESTATUS(1807)GOCREATE DATABASE ReadyNAS ON( NAME = ReadyNAS_Data,FILENAME = '\NAS1NASDiskSQL ServerReadyNASReadyNAS_Data.mdf',SIZE = 100MB,MAXSIZE = 20GB,FILEGROWTH = 20MB)LOG ON ( NAME = ReadyNAS_Log,FILENAME = '\NAS1NASDiskSQL ServerReadyNASReadyNAS_Log.ldf',SIZE = 20MB,MAXSIZE = 100MB,FILEGROWTH = 10MB)
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Nov 5, 2007
Hi all,
I downloaded and ran AdventureWorks.msi into my SQL Server Management Studio Express (SSMSE) one year ago.But I did not know how to attach it to my SSMSE then. Last week, I deleted it from the "Add or Remove" of Control Panel and I downloaded the new AdventureWork.msi and installed it my SSMSE. Today, I tried to use the Database Explorer of VB 2005 Express for the first Stored Procedure programming. I clicked on AdventureWorks.mdf and I got the following error: One or more files do not match the primary of the database. If you are attempting to attach a database, retry the operation with the correct files. If this is an existing database, the file may be corrupt and should be restored from a backup. Cannot open user default database. Login failed. Login failed for user 'CENADe1enxshc'. Log file 'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDataAdventureWorks_Data_log.ldf' does not match the primary file. It may be from a different database of the log may have been rebuilt previously. Please help and advise me how to correct this problem.
Thanks,
Scott Chang
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Feb 13, 2008
I have installed 2 SQL Server 2005 Express sample databases from 2 books, ASPnet 2.0 and ADOnet 2.0. The ASPNETDB.MDF was shown in App_Data and Database Explorer, but not in the SQL Server Management Studio Express. The AdoStepBy Step database created by a ConfigDB.exe was displayed in the Management Studio, but not in the App_Data, or Database Explorer.
Is this the way SQL Server 2005 runs the 2005 databases for SQL Server 2005 Express only? Or also in SQL Server 2005?
TIA,
Jeffrey
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Jul 15, 2015
I am setting up SQL audit on sql servers in my environment based on requirement. I want to create database specifications ASAP database created. I tried DDL trigger but Audit doesn't support triggers. So I created audit specifications on model database. the only problem with this is every specification created on new database with same name.database specification name includes newly created database name or other methods to create database specifications on newly created databases.
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Sep 9, 2015
I am new to SSIS. I have been struggling with this for the past one week. I have a weird task. I need to import several tables from one database to a different server with a new database name. We need to do this at the end of every year. The main problem here is that the number of tables varies every year. You may not have all the tables as last year or may have more tables. So I need to create a dynamic task that takes care of this every year without changing the package.
I have performed the following tasks **
1. Create a new dynamic database. ( I have used Execute SQL Task to do this) 2. Copy all the table structures ( I have used Execute SQL Task to do this)
3. Import Data. This is the main problem. I was trying to create a dynamic connection string with variables as suggested in several forums but I finally came to know that this cannot be done if the table structures are different as the metadata cannot be refreshed at runtime.
4. The final step to create a process to validate the data (the count from each table for both source and destination. I think this can be done with Sql task.
What is the best method to do this? My DBA does not like “Transfer SQL Objects Task” or “transfer Database Task”. I would like to create this as a dynamic process.
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Apr 23, 2006
I have a medical records system, SoapWare v4.90, that uses MSDE (SQL2000) databases. Due to the 2gb limitation, I am trying to migrate over to SQL 2005 (Standard or Express) which I have heard works fine. The SoapWare has a datamanager that allows me to log in to the MSDE instance, detach the SoapWare databases from msde (as well as do backups, etc) which I can confirm are detached.
Then I log back into a SQL2005 database instance using the datamanager and try to attach the database. This is what their pictured instructions demonstrate. However, I get the following error:
Database 'sw_charts' cannot be upgraded because it is read-only or has read-only files. Make the database or files writeable, and rerun recovery.
Of course, some of the entries will be read only, since doctors have to sign off the charts and are not allowed to subsequently change them. But I should still be able to switch over to sql 2005?!?!?!?
Or... is there a way to attach the databases to SQLExpress manually?
Help pls?
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Feb 4, 2008
Hi all
Iam working in Prodcution ENV,Please help how make space
The log file for database 'Home_alone' is full. Back up the transaction log for the database to free up some log space.
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Sep 26, 2006
Dear All,
i have a question abt winCE 4.2 and SQL server CE.
i am using VB.net of Visual Studio 2005
My platform is using a PDA with winCE 4.2 and SQL server CE. The Host program is using dbf files on desktop side.
I got a problem of how to sync / read the sql CE data from a windows application.
so, i wanna ask,
1. any method to access the data from winCE data by windows application? or can i convert the sdf file to windows readable files? or any others?
2. Can i use a MDB to sync with SQL server CE?
can i synchronize the mobile device which has a SQL Server CE database with the Access database on the desktop?
last question,
3. is that windows CE .net 4.2 not support pocket access (cdb) anymore?
please help me out
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Apr 8, 2007
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Feb 12, 2008
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wouldn't be as portable as keeping the GeoDB info in its own database,
but maybe I'm being too software engineer-ish here - afraid of low
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Nov 1, 2001
Hi all,
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May 9, 2012
I'm taking a database(read-only) backup from one server and restoring it on other server. As soon as restore is done it is bringing database into single-user read-only mode.
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