SQL Replication For Multiple Sites
Oct 5, 2007
I am trrying to figure out what the best replication would be to use and or setup...
Her eis the current goal and structure..
We are just moving over to a new custom POS system that will be using SQL databases....We have have three locations and we want each location to be independent in case of network connectively failures to our primary location.
Basically, all three locations will be running SQL server 2005 and the POS app...
We want replication to occur overnight, so that each location will have the other locations transactions from the previous days, etc...
Essencially I want all three locations to "syncronize" their data every night....basically two-way replicaiton between all three sites...
Master Site will have say databaseA that the local POS system will use
Sencond Site will have say databaseA that the local POS system will use as well
Third Site will have say databaseA that the local POS system will use well...
Any thoughts or Ideas will be helpful
Thx
Martin
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Mar 13, 2002
Hello all, I am in the process of doing some research and thought I would query you guys (and gals) for your opinions. I have never setup replication and my company is bringing up multiple sites, multiple GIS servers with one master GIS server. They want them to be replicated. Network bandwidth throughout the day is a concern and I may have an option to run replication at night. All servers will be continuously connected and they tell me that each site will be owners of it's data so data conflict should not be an issue. I originally thought qued-updating subscribers and transactional replication but it sounds like that does not work if the servers will always be connected. Any opinions on this anyone? Also, keep in mind that this is GIS data so there will be pretty big blob files in the database. Thanks in advance. RayH
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Feb 23, 2008
hi all. my question is simple: can i have 1 sql data base for multiple sites?
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Jun 10, 2015
Can we setup a replication ( publisher and subscriber are Sql server) between two different domains, basically different company databases.
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Mar 28, 2007
Is it possible to host more than one site on the server that hosts reporting services?We have a web app that is accessed through intranet. This site is hosted (IIS)on the same server as the sql server 2005 database that is used as the backend. Is it possible to run reporting services from this same server? or does the reporting services default site require to be the only site hosted?
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Mar 28, 2006
How does database connection pooling work for multiple "copies" of the same web application on the same server? My IIS 5 win2K server has 32 sites, all pointed to the same code. Each site responds to a different IP/URL(www.a.com, www.b.com, etc.) for SSL reasons. DB is SQL 2000.
Based on perf stats, as a new site spins up, a new pool is created. So when I hit site 1, I see 10 pooled connections. Site 2 bumps it up to 20, etc. However, I don't see it go up to 320, so it isn't linear.
BTW, I'm trying to build a case for having 1 site/application that all URL's point to in order to conserve memory, connection pooling, caching, etc.
Any help is greatly appreciated.
-Allen
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Mar 3, 2002
Can any one pls gime list of sql server websites similar to SWYNK.
also pls gime some good sql server links for diccussion groups.
Thanks in Advance
Kinds regards
sk
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May 5, 2006
Hi,
Can any one help me in pointing to some good web sites where I can get SQL scripts for most common useful functions.
Thanks
-Sudhakar
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Mar 17, 2004
Does anyone know of any links to some great MS SQL sites I can check out to learn from?
Thanks for your thoughts.
Sincerely,
Tim
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May 24, 2006
naresh writes "I would like to learn sql server 2000 and I do not have any programming experienc at all so how do i learn this programme. Do you have any suggestion or any basic books or materials you guys can refer to me
Thank you"
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Sep 24, 2005
“HELP !! We’ve lost about 25 client’s websites. The databases were backed up along with all the actual files contained within each CSK….in addition, all the original databases are intact & can be reattached to the new SQL server…..the problem that exists where the original CSK files do not recognize the original database once it is reattached to the new SQL server. Any help would be most appreciated.
This is the error……
Login failed for user 'DARRYL1ASPNET'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'DARRYL1ASPNET'.Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[SqlException: Login failed for user 'DARRYL1ASPNET'.]
System.Data.SqlClient.ConnectionPool.GetConnection(Boolean& isInTransaction) +472
System.Data.SqlClient.SqlConnectionPoolManager.GetPooledConnection(SqlConnectionString options, Boolean& isInTransaction) +372
System.Data.SqlClient.SqlConnection.Open() +384
System.Data.Common.DbDataAdapter.QuietOpen(IDbConnection connection, ConnectionState& originalState) +44
System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +304
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +77
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet) +38
ASPNET.StarterKit.Communities.CommunityUtility.GetAllCommunitiesFromDB() +93
ASPNET.StarterKit.Communities.CommunityUtility.GetAllCommunities() +58
ASPNET.StarterKit.Communities.CommunityUtility.GetCommunityInfo() +327
ASPNET.StarterKit.Communities.CommunitiesModule.Application_BeginRequest(Object source, EventArgs e) +221
System.Web.SyncEventExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() +60
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +87
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Feb 15, 2006
If I were going to look into investing into a virtual dedicated server and wanted to save LOTS of $$$ by offerring SQLExpress (FREE) vs. SQL Server Enterprise $25,000 sticker price.
The Web sites that I build are for small businesses.
Is there an issue in using SQLExpress on the Internet? Considering it is the Web application account ID accessing the database so that is one user hitting the DB.
I am unclear on how I need to evaluate multiple calls to the system depending on how many users are on the Web site opening the connection performing SQL Commands then closing the connections all with the same user creditials.
<moojjoo />
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Jan 25, 2008
What are your favorite Forum sites?
SQLTeam.com
SQLSERVERCENTRAL.com
TekTips.com
MSDNSQL Forum
forums.sqlmag.com
I hate to ask for information such as this but with the low response to my questions I was wondering anyone knows of a better site for SQL Server database mail issues?
Thanks,
Thom
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Oct 31, 2006
I have the following code but it keeps erroring on the last line and I'm unsure as to why it is doing it???
Here is the error message
Msg 102, Level 15, State 1, Line 42
Incorrect syntax near '@Sites'.
declare @Sites varchar(50)
declare @Kit_No char(20)
declare @Location char(2)
set @Location = 'Ho'
set @Kit_No = 'mo1k'
if (SELECT sitetype from gss.dbo.kup_regions where region_code = @Location) = 10
begin
set @Sites = '''Pe'',''Hg'',''Vo'',''' + @Location + ''''
end
select
KR.Region_Code,
KR.Region_Name,
Z.Qty,
Z.Kit_Description,
Z.BookedOutToDate as Usage,
Z.Local_Cost,
(select overstock from gss.dbo.vGss_overstock where region_code = Z.region_code and kit_no = 'm01k' )as Rolling_Avg,
C.Symbol,
Z.FOB,
(SELECT
Price
FROM
gss.dbo.FedEx_Rates Fed
WHERE
SourceRegion = (SELECT Region_Code FROM gss.dbo.KUP_Regions WHERE Region_Name = 'penistone')
AND Weight = (SELECT MAX (Weight) FROM gss.dbo.FedEx_Rates WHERE Weight < (SELECT Packed_Unit_Weight From gss.dbo.KUP_Kits WHERE Kit_Code = (select Kit_Code from gss.dbo.GSS_Kits where Kit_No = 'm01k' ))+0.5)
AND Fed.DestRegion=KR.Region_Code) as Fedex_Price
from
(gss.dbo.kup_regions KR with (nolock)
left outer join
(select KRD.Qty,KRD.BookedOutToDate,KRD.Local_Cost,KRD.FOB,GK.Kit_Description,KRD.Region_code,KRD.Archive_Date
from gss.dbo.kup_region_data KRD with (nolock) inner join gss.dbo.gss_kits GK
on KRD.kit_code = GK.kit_code where GK.kit_no =@Kit_No and KRD.archive_date is not null )Z
on KR.region_code = Z.region_code)
inner join gss.dbo.Currency C with (nolock) on C.Country_Code = KR.Country_Code
where KR.ExpectExtract = 1 and KR.Designation = 'p' and KR.Region_code in @Sites
Many thanks for any help
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Apr 12, 2007
I have a SQL 2005 server on a separate machine from my IIS machine, and anytime the SQL server restarts (like for last night's automatic updates) the connection pooling seems to break. Among the apps on this IIS box is Community Server 2.1, along with some other custom-built apps. The only way to resolve it is to stop and restart the IIS services.
Previously all SQL-dependent apps on that IIS box broke when SQL was reset, but I seemed to have addressed it, at least on my custom-built apps, by forcing a TCP connection in the connection strings (instead of the default named pipes method). I did change the Community Server connection strings as well, but for some reason that didn't seem to work.
Has anyone else experienced similar problems with interruptions in SQL connectivity bringing down apps that connect to that SQL server? I hate to turn off automatic updates just to make sure my ASP.NET apps are available.
I apologize if this isn't clearly an ASP.NET question, but hopefully someone can help me out.
Thanks,Josh
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Jun 13, 2007
I'm very new at this and found this video very helpful. I downloaded Visual Web Developer 2005 Express Edition and following the direction except for changing a few column names. When I get to the point of viewing in browser I get the drop down box but nothing in it and the table doesn't show up either. I copied all the data to my website and tried to view it there but got some error that I don't understand. Can someone please help. The website I uploaded the files to is ocbeachrentals.net/default.aspx. Thanks.
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Apr 18, 2003
I am wondering how people maintain their SQL Servers which run at several customers sites and disk space is getting smaller and smaller? I want to say that we have tables in SQL dbs which hold a lot of date consisting of statistics, errors, logs etc.
They grow and grow and existing data is not needed anymore as soon as the data get older than let's say for one year. How do you overcome the problem reducing the tables but not charging the system too much as the major application also runs on the same server?
Thanks for any input
mipo
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Mar 25, 1999
I am new to RDO and SQL I have been using DAO and know that the syntax is similar but the connections to the database is different. Does anyone know of a good site that explains this?
Thanks in advance.
LoPingKill
loping@inlink.com
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Jul 15, 2004
We have a large SQL database, and we need to send out updated records to many clients' sites which are not connected.
We currently have a tool which looks at the audit log of changes we made, creates a file based on this, which is then emailed to our clients. They then run a tool we created to remerge the changes.
I suspect SQL server replication might make all this possible. Am I right? Can SQL server produce a file automatically which can be applied to a remote database to update the tables as appropriate? From looking at some replication stuff it looks to me like you have to have the servers on the same network.
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Mar 14, 2007
Using VS2005, VB backend and javascript,
I have developed a relatively simple site - its got a few (12) simple aspx pages but its mostly client side javascript. Keeping disk storage costs down is a big concern with this my site. The disk usage for the site is ~24M. Since this was larger than I expected I started inspecting the files comprising my site and found that the "ASPNETDB.MDF" in my "App_data" folder is consuming 10.2M by itself. The thing is that site only has a few pages with calls to SQL Server - but I never did anything (that I know of) with ASPNETDB.MDF. Through VS2005, I opened up the MDF file and poked around, everything that I looked at was empty (NULL).
So my questions are:
What is causing the ASPNETDB.MDF to consume 10.2M even thought I can't see any data stored in it?
Is there anyway for my to reduce the size of this file? If so, how?
Can someone give me some pointers as to where to read up on what the ASPNETDB.MDF does?
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Apr 17, 2008
Hi All,
I'd like to throw this idea 'out there' to see if I'm missing something I'll later regret.
I'm looking to resolve a scalability issue within our point-of-sale program. Currently the PK on transactional tables (sales and orders) is created by the application layer using a 'MAX(PKCol) + 1' mechanism. Obviously this requires that all users of the system, whether they're local or remote, have current data at any time they wish to insert. It's this limitation I'd like to remove. Most sites are using MS SQL Server 2000. No sites use anything specific to a later version.
By having a PK that can be generated independently of a 'master' database we can overcome this issue. The PK values will need to be unique within a 'group' of shops and able to be generated by a program operating at any level. From 'head office' which manages a number of shops, to the server at a given shop and even the register / till itself should be able to create ID's while disconnected from the server (using a local database).
It seems there's three main ways to accomplish this:
- Identities,
- MachineID, CurrentPK composite.
- GUID's
Identities: I've ruled out identities as I believe the administration overhead of dealing with them makes them impractical (there may be several hundred registers and therefore as many ranges to be set up within a group).
MachineID, CurrentPK composite: The MachineID references a Machine table which has an entry for each ethernet MAC address which connects to the database. The reason I chose to store the MAC in another table rather than simply using it as column is that I'm fetching it from sysprocesses.net_address(nchar(12)) and believe it's computationally cheaper to use an int than a text column. This mechanism means that we can still expose the PK to the user in some cases (eg: InvoiceNumber printed on a receipt). When the local database is not up to date (usually due to network problems) there will be cases where the CurrentPK will be duplicated but kept unique since it's coupled with the new MachineID. The big drawback to this method is that all current code will need to be revised to deal with the composite keys (this will be a significant amount of development).
GUIDs: Ugly to look at and time-consuming to type. They're not something which you'd expose to a user unmodified so realistically this means altering existing code to use a new 'user friendly' number where the PK is currently exposed to them. The use of GUIDs rule-out the use of clustered indecies on tables they're the PK for lest most inserts cause a page split. The splits would also necessitate more frequent index defrags / rebuilds. Using a non-clustered index incurs a penalty Vs a non-fragmented clustered one (doesn't it?) so while this avoids page-splits it comes at a cost.
After all that I think the best solution is to use GUIDs with a non-clustered index for each of the PK's. While it might not be the fastest of the options (slower reads/joins Vs composite PK) it will be significantly faster to develop while maintaining acceptable performance.
Thoughts?
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May 12, 2008
I want the sites for ASP.NET 2.0 and SQL SERVER 2005 interview questions.
2) Sites for SQL SERVER 2005 concepts
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Jul 12, 2000
suppose i am repliacting(Transactional Replication) to two servers using the same publications can i stop replicating to one server without disturbing the other server?
If i resume the replication to the server after two days what will happen to the two day's data?will they be replicated when i resume the replication?
Thank you
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Apr 30, 2007
I am replicating an 80GB database between NY can CT and would like toknow why table sizes are different between the two.Here is an example of sp_spaceused::NY IOI_2007_04_23 rows(279,664) reserved(464,832)data(439,960) index_size(24,624)CT IOI_2007_04_23 rows(279,666) reserved(542,232)data(493,232) index_size(48,784)Thanks,
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Jan 19, 2007
I have successfully installed the reporting services in SQLServer 2005 and have integrated with WSS 3.0. When I go to a site to add in the Viewer web part it is not there. Any ideas?
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Feb 24, 2003
Can I have multiple SQL Server Agents running concurrently?
I would like to have 10 instances of database running on my local SQL Server - each of these are Merge Replication to a unique database located offsite.
Do they all run through one SQL Server Agent?
If they do would this be a slow process as, I think, the SQL Server Agent queues the replications pending.
Thanks,
Bianca
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May 14, 2008
:mad:
I have one Publisher! (SQL 2005)
Two Subscribers. (SQL 2005)
Each subscriber requires different row filter from the published tables.
So, i need to create Two publications for each subscriber for the same db.
When i setup first publication, and apply filters to published tables.
All goes fine.
As soon i create an other publication with same published tables but DIFFERENT row filter; the log reader agent fails!
The process could not execute 'sp_replcmds' on 'DB1'. (Source: MSSQL_REPL, Error number: MSSQL_REPL20011)
Get help: http://help/MSSQL_REPL20011
Execution of filter stored procedure 2076702271 failed. See the SQL Server errorlog for more information. (Source: MSSQLServer, Error number: 18764)
Get help: http://help/18764
The Log Reader Agent failed to construct a replicated command from log sequence number (LSN) {0008443a:000003b5:003e}. Back up the publication database and contact Customer Support Services. (Source: MSSQLServer, Error number: 18805)
:confused:
I have tried to re-initialze the subscriptions and re-run snapshots but no luck.
As i remove the row filter from the second publication; log reader starts working fine.
Previously i was using Merge replication and all was going BUT, on very large DML on publisher, we use to receive deadlock errors on application.
I decided to use Tran repl instead because log reader reads the changes from tran-log instead of locking the published tables; NOW I AM STUCK!
Ideas please!!!!
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Nov 28, 2007
I have a central server (CS1) with database CDB and a branch server (BR1)
Inside the branch server, there are two database DB1 and DB2.
CDB contains data for DB1 and DB2
I made a subscription in the brancserver named BR1:DB1(this will replicate the data from CDB to DB1)
I also made a subscription for DB2 named BR1:DB2(this will replicate the data from CDB to DB2)
Unfortunately, upon starting the synchronization for BR1:DB1, the data replicated into DB1 also contains data for DB2. same happens with the BR1:DB2..
How do I filter the data that will be replicate per database..Example:only data for DB1 coming from CDB should be replicated into DB1 if that specific subscription(BR1:DB1) is synchronized.
Thank you
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Oct 2, 2007
I have 1 publisher in MI and 3 pull subscribers (1 local subscriber in MI and 2 in NC).
I am trying to decide whether to use a central distributor or a distributor per subscriber. It is my understanding that if I use a central distributor, large transactions that are being process will block other transactions from happening and increase latency. Most of the transaction will be relatively small, but several times during the day clients update large amounts that cannot be predicted. I want to make sure the other locations are not waiting on a large update to be processed through the distributor.
My current plan is to create subscribers with their own distributor. What are the issues with doing that over a central distributor?
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Aug 15, 2014
We have a multi-site AG and are demoting one of the remote sites out of the AG. In doing so, we've discovered that no logic exists to remove an IP address from the listener.
It seems that the ALTER AVAILABILITY GROUP MODIFY LISTENER logic lacks functionality other than ADD. [URL] ....
I'm afraid to just remove the IP address from the cluster object as that IP is also stored in the HADR systables.
select * from sys.availability_group_listener_ip_addresses
select * from sys.availability_group_listeners
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Nov 24, 2006
Hi there,
I have one publicacion on ms sql 2005 Enterprise w.sp1/MS Windows 2003 Enterprise w.sp2 and one subscriber on MS sql 2005 Enterprise w.sp1/MS Windows 2003 w.sp2, but I have also 3 subscriber on MS SQL 2000 w.sp3/MS Windows 2000 advanced server w.sp4. They replicate the same database with a publication compatible with 80RTM, All works fine with data replication, but I can't replicate DDL to MS sql 2005 suscriber, I don't care that don't replicate DDL, but I want manually alter triggers at MS sql 2005 suscriber, but I get this error at the subscriber on when I run the ALTER TRIGGER statement :
Msg 21531, Level 16, State 1, Procedure sp_MSmerge_altertrigger, Line 67
The DDL statement cannot be performed at the Subscriber or Republisher.
Msg 21530, Level 16, State 1, Procedure sp_MSmerge_ddldispatcher, Line 181
The DDL operation failed inside merge DDL replication manipulation.
Msg 3609, Level 16, State 2, Procedure TU_Centros_Distribucion_Articulos, Line 58
The transaction ended in the trigger. The batch has been aborted.
Any help will be appreciated,
PD. I miss sql2000 replication, where I have full control over the database logic
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Oct 22, 2015
Replicate ddl setting is not working if multiple subscribers are used...
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Jul 13, 2015
I am currently having publisher(database A), subscriber (database B) and distributor on the same instance for a test environment that is using a uni directional transactional replication. Now I need to setup another unidirectional transactional replication in the same test instance but for a different database. Publisher database is D and subcsirber database is E.
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