Simple Distributed Partioned Views (DPV's) Replication && Sheep
May 18, 2006
Last Night I had a Dream
And it involved my favourite Design Technique - Simplicity
So to achieve Simple Replication across geographically disparate Servers we could use:-
300 plus SQL2000 Servers enabling 1000 Concurrent Active Clients (10% actual light Activity)
WAN = National Private Secured (ping 300ms max) (128kbps leased line Min)
One Interface Server constantly Running A Simple Dynamically Built Partitioned View (removing down servers)
One Stored Proc (or more) that Synchronizes the DPV Updateable Partitioned View with
Interface Mirror Table DeNormalized Holding a Physical Copy of each of the Subscribers/Publishers/Client Sql Servers Data
The Question is:-
Was my Dream a Nightmare OR A Dream Come True ?
I Know it's down to the Network Quality to a great degree but (That's the suck it and see part of the question)
but as a form of replication it seems a very simple platform that could possibly tackle our friend
The DCP (Data Consistency Problem) with Client Update DateTime Column & frequent activation (30 Secs).
Has anyone had much experience with this type of Scaling out over a WAN ?
Is it worth a Try in the Real World ?
GW
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Jul 14, 2006
Hi everyone,
I have some doubts about distributed partitioned views.
When we create a distributed partitioned view whcih include three server, do we have tocreate this same distributed partitioned view in that three server in order to make each server to see adn especially modify it ?
Thanks
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Apr 21, 2003
I'm trying to do some researh on the use of SQL's DPV. I'm looking for feedback from people who've actually done this production to know more about the design challenges and level of added administration required. Any information will be much appreciated. Thanks.
aK
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Aug 24, 2006
I am trying to write some admin only procedures which will collect information to one of my development server from other production and development servers.
I have created linked servers to access these other servers on the development server. This development server is SQL Server 2000 EE. Other servers which I want to access are 2000 and 2005 (vaious editions)
E.g I have another development server called PRODTEST which is SQL Server 2005 and on the development server I have created a linked server pointing to PRODTEST called TESTLINKSRV. I want to access new object catalog view (as I do not want to use sysobjects)
When I run the following query
SELECT * FROM [TESTLINKSRV].[DBNAME].[sys].[objects]
I get following error,
OLE DB error trace [Non-interface error: OLE DB provider does not contain the table: ProviderName=' TESTLINKSRV ', TableName='" DBNAME "."sys"."objects"'].
Msg 7314, Level 16, State 1, Line 1
OLE DB provider ' TESTLINKSRV ' does not contain table '"DBNAME"."sys"."objects"'. The table either does not exist or the current user does not have permissions on that table.
So I try this query
SELECT * FROM [TESTLINKSRV].[DBNAME].[sys.objects]
and I get following error
Msg 208, Level 16, State 1, Line 1
Invalid object name TESTLINKSRV.DBNAME.sys.objects'.
So bottom line is how do I access catalog views on a 2005 server from a 2000 server using linked server?
I hope someone understands what I am trying to achieve. Please let me know what is it that I am doing wrong.
Thank you
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May 9, 2002
Hi,
I have created a partioned view from the Union of 2 select statements. This shows me Sales in a Store over a two month period.
Select ID,PartitionKey,DateKey,StoreKey,TillKey,ProductKe y,GrossSalesRevenue,
from Sales_Fact_2002April
Union
Select ID,PartitionKey,DateKey,StoreKey,TillKey,ProductKe y,GrossSalesRevenue,
from Sales_Fact_2002May
The view is called HalfHour_Fact. I need to issue a statement to find out for each Store number what is the latest date that sales have been received. The Store_Dimension table is used to return the natural StoreNumber as the fact table stores it as a surrogate key. I issue the following statement:
Select t2.StoreNumber,Max(t1.DateKey) as Date
from Warehouse.dbo.HalfHourly_Fact t1 join Store_Dimension t2
on t1.StoreKey = t2.ID
Group by StoreKey
order by StoreKey asc
In this example if I select Store "2" then the maximum date returned from the Partitioned View is 22/04/02. However, and this is the bit that is confusing me, if run the same query against the base tables that make up the partitioned view I get the value 05/05/02 from the Sales_Fact_2002May table and 30/04/02 from the Sales_Fact_2002April table.
The data therefore exists in the base tables that make up the partioned views but is not being selected when I use the partioned view.
I'm running SQL Server 2000 Enterprise Edition SP1.
Any ideas?
Thanks
Rob
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Nov 1, 2000
Can anyone know the difference between using distributed queries for transfering data and replication.
Which is more reliable and which is the better way?
If the volume of database over 2,000,000 with nearly 100 columns,which is the better method?
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Apr 29, 2015
The process could not execute 'sp_repldone/sp_replcounters' on 'sqldb2008'. (Source: MSSQL_REPL, Error number: MSSQL_REPL20011).The specified LSN {00000000:00000000:0000} for repldone log scan occurs before the current start of replication in the log {001317bf:0000f736:0008}. (Source:
MSSQLServer, Error number: 18768).The process could not set the last distributed transaction. (Source: MSSQL_REPL, The process could not execute 'sp_repldone/sp_replcounters' on 'sqldb2008'. (Source: MSSQL_REPL, Error number: MSSQL_REPL22037)
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Jul 20, 2005
I need just the names of tables, views and sprocs within a SQL Serverdatabase. What's the easiest way to do this?
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Mar 19, 2001
Hi!
I was just wondering - is it me or my mind playing tricks.
Does replication ever replicate your triggers, views, procedures, etc.? Cause, it didn't on my end.
MJT
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Apr 17, 2007
we are trying to replicate a database from 1 server to another, but during the snapshot, the process will fail with the following error.
The process could not bulk copy out of table '[dbo].[syncobj_0x4645324137444535]'.
i located this table....or actually 'View'....and im trying to determine whether this view is actually needed or not....
any help would be greatly appreciated
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Jun 28, 2006
I have a three server peer-to-peer replication setup that includes articles for tables and views. As I understand the BOL, scheme changes -- which I take to mean changes, amont other things, changes in the design of a table or view -- should automatically replicate to the other servers in the topology. Here are my quesitons:
When including a view as part of the publication, what is it, exactly, that is getting replicated? If all the tables supporting a given view are being replicated, and the view exists on all three boxes, whatelse, besides the view schema (and changes thereto) is being replicated?
Secondly, if in fact schema changes are replicated, why can't I modify a view that is part of a publication? When I try to make a change to such a view, I get a server timeout message, every single time. When I remove the view from the publication, I can make the modification with no trouble. What does replicating schema changes mean if I can't make changes to the schema?
Thanks for any enlightenment on this.
Randy
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Feb 24, 2006
Hi,
I read that views can't be published with SQL Server 2005 replication. Is this planned for the future? If not what alternatives are there for this?
Simple collecting the data needed in a new table ain't a solution for us (memory consuming). And joining the data on the PPC ain't a good solution either (memory and time consuming). We only want to pull the data.
Greets,
Ivo Klerkx
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Dec 6, 2007
Hi Folks Is there an easy way around this ? One Way Transactional Rep Subscriber needs SCHEMABINDING on the majority of their Views (require View Indexes) which read from Replicated Tables. Main table has 4 Million Rows ReInitialize Subscription Errors with Cannot Drop Table because it is being referenced By Object ..... [schemaBound View] GW
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Mar 20, 2007
Hello,
I setup the transactional replication to replicate remote database that has 50 tables.
Two of the tables with huge columns.
I splitted the columns by creating several views before running the initial snapshot.
Questions:
1. Can the database replication copy the views.?
2. Where the view will be stored at the subscriber database?
Thank you.
Edwin
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Jan 2, 2008
Greetings,
I am building a system that requires a small database to be replicated.
The DB is made up of a few tables that do not change much, primarily by user-input or triggers on those tables, and one constantly growing table for incoming messages with rows constantly being added to it.
We require having two systems (System=Hardware&OS/SQLDB/Application) running in parallel where one could act as a failover to the primary system. Both systems would be run in the same site and have a direct network link.
My goal is to have both systems maintain identical databases and to be able to "re-synchronize their data after a failure in some recovery state.
I am looking at:
1. SQL Server Replication Methods (Publishers/Subscribers)
A possible scenario i need to support:
ServerA: primary server acts as publisher
ServerB: secondary failover server acts as subscriber
ServerA: Fails!
ServerB: Assumes role of primary server (i.e Publisher)
ServerA: recovers later, becomes subscriber to ServerB(secondary)
Q: Can Roles Be Switched or A server be a subscriber and
a publisher at the same time?
2. Use ServiceBroker Queues and Have Each server SEND a message
to the other server whenever it gets incoming data?
3. Use Transact-SQL in ServerA to write data to ServerA
and ServerB and vice versa.
4. Not worth replication, just have the application write data
to both servers in two seperate requests.
Which is the preferred way to accomplish this?
Thanks,
-ali
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Sep 21, 2006
All of a sudden none of our merge replications are working. In fact you can't even insert, update or delete and data from the tables in the merge publication. When trying that, we get an error stating:
Msg 550, Level 16, State 1, Procedure MSmerge_ins_E3F43EF8B259476099BBB194A2E1708C, Line 42
The attempted insert or update failed because the target view either specifies WITH CHECK OPTION or spans a view that specifies WITH CHECK OPTION and one or more rows resulting from the operation did not qualify under the CHECK OPTION constraint.
The statement has been terminated.
Currently, the only solution I've found is to delete the publication and recreate it. I'm trying to figure out why this happened. It happened on a development server that to my knowledge, hasn't been changed in a week or so outside of changing the server's IP address. Would that cause such an error to occur?
-mike
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May 4, 2006
We have merge replication running with anamous subscribers
We have generested lots of views tables and stored procedures like
sp_ins_C435D35DDEC04FE2517CCD52A9024EC4
ctsv_07BA7383A12B4654B4D3A69B3053B227
aonflict_DH_tblReplicationRegion
How do we get rud of these I am concerned it will fill up the publisher database
Can any one advise
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Jul 23, 2005
I have a product that sits on a main server and wish to implementfunctionality to allow salesmen to come along, pick up a snapshot of thedatabase, go away and maybe modify/add to it and then come back and"synchronise" their data. I'm reading up on Merge Replication for thispurpose. But anyway, I created a publisher on my server and it went awayand generated a "rowguid" column on all of my tables (my tables all have anIdentity column key field). Now of course my "Inserts" no longer work, asthey expect a GUID. I would have expected SQL Server to automaticallygenerate a guid for new inserts (in a similar way to it's TIMESTAMP), but itappears it doesn't, despite the fact I have "(newid())" as the default forthe column. It always inserts the same value:{00000000-0000-0000-0000-000000000000}.So, back to basics, now I have a guid field for each record, how do I manageinserts?Thanks.
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Jun 22, 2007
Hi!
There is a view in our replicated SQL-2000 database, that returns all user tables and views with replication state (0 if not included into publication, 1 if included):
Code Snippet
CREATE VIEW [dbo].[ViewREPL_PublishedObjects]
AS
SELECT TOP 100 PERCENT
CASE [xtype]
WHEN 'U' THEN 'Table'
WHEN 'V' THEN 'View'
ELSE NULL END AS [Object Type],
[name] AS [Object Name],
CASE WHEN [replinfo] = 0
THEN 0 ELSE 1
END AS [Replicated]
FROM [sysobjects]
WHERE
[xtype] in ('U', 'V')
AND [status] > 0
ORDER BY
(CASE [xtype]
WHEN 'U' THEN 1
WHEN 'V' THEN 2
ELSE 10
END),
[name]
Now we need to upgrade our database to SQL-2005, but [sysobjects] table have been changed, so neither Replicated state could be determined according on [replinfo] column value, nor User/System object according on [status].
So, I need a view with same functionality, that will work under SQL-2005 and 2008.
Please, help!
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Feb 29, 2008
We have a test db, a staging db and a live db. I have a stored procedure that runs fine on test and staging, but throws the following error on live.
The Microsoft Distributed Transaction Coordinator (MS DTC) has cancelled the distributed transaction.
The stored procedure uses linked servers and a transaction.
We're using the following transaction code in the stored procedure
BEGIN
BEGIN TRANSACTION
BEGIN TRY
---
procedure stuff here
---
COMMIT TRANSACTION
END TRY
BEGIN CATCH
DECLARE @ErrorSeverity INT, @ErrorNumber INT, @ErrorMessage NVARCHAR(4000), @ErrorState INT
SET @ErrorSeverity = ERROR_SEVERITY()
SET @ErrorNumber = ERROR_NUMBER()
SET @ErrorMessage = ERROR_MESSAGE()
SET @ErrorState = ERROR_STATE()
IF @ErrorState = 0
SET @ErrorState = 1
RAISERROR ('ERROR OCCURED:%d', @ErrorSeverity, @ErrorState, @ErrorNumber)
IF XACT_STATE() < 0
ROLLBACK TRANSACTION
END CATCH
END
I found the following link which seems to be the problem we're experiencinghttp://support.microsoft.com/kb/937517
The link includes a workaround which is the following:
"To prevent the SQLNCLI provider from sending an attention signal to the server, use the SQLNCLI provider to consume fully any rowsets that the OLE DB consumer creates. "
How do I use the SQLNCLI provider to fully consume any rowsets?
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Apr 3, 2006
Fellow database developers,I would like to draw on your experience with views. I have a databasethat includes many views. Sometimes, views contains other views, andthose views in turn may contain views. In fact, I have some views inmy database that are a product of nested views of up to 6 levels deep!The reason we did this was.1. Object-oriented in nature. Makes it easy to work with them.2. Changing an underlying view (adding new fields, removing etc),automatically the higher up views inherit this new information. Thismake maintenance very easy.3. These nested views are only ever used for the reporting side of ourapplication, not for the day-to-day database use by the application.We use Crystal Reports and Crystal is smart enough (can't believe Ijust said that about Crystal) to only pull back the fields that arebeing accessed by the report. In other words, Crystal will issue aSelect field1, field2, field3 from ReportingView Where .... eventhough "ReportingView" contains a long list of fields.Problems I can see.1. Parent views generally use "Select * From childview". This meansthat we have to execute a "sp_refreshview" command against all viewswhenever child views are altered.2. Parent views return a lot of information that isn't necessarilyused.3. Makes it harder to track down exactly where the information iscoming from. You have to drill right through to the child view to seethe raw table joins etc.Does anyone have any comments on this database design? I would love tohear your opinions and tales from the trenches.Best regards,Rod.
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Sep 6, 2007
Which is more efficient? One large view that joins >=10 tables, or a few smaller views that join only the tables needed for individual pages?
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Jun 28, 2007
Hello.
Newbie here. I've only been using SQL for about a year now and have some minor questions about sql objects that reference other objects.
We have some views which reference other views in the joins. I will call one the primary view and the one being referenced in the joins as the secondary view.
Recently we made changes to the secondary view.
After which the primary views which referenced it would not work because of this change and had to be 'refreshed' by using drop/create scripts which essentially just dropped it and recreated the exact same view. I do not recall the exact error message that was returned other than it seemed to suggest that it could no longer see the secondary view since it had been changed. Nothing in the primary view was changed in any way, just the secondary.
Some here where I work have suggested off hand that this was a recompile of the primary view because the contents of the secondary changed.
My questions are:
1. Exactly why did this happen and is there a proper name for it when it does?
2. The same problem does not seem to occur when we have stored procedures referencing views in the joins which had just been changed. Why is that?
Thanks for any help on the matter. I greatly appreciate it.
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Feb 22, 2007
Hello,
to make a report easier I'm developing it using a view of joined views of joined views.
Is there any significant performance penalty as opposed to just having one big select?
Cheers.
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May 26, 2004
Hey,
I have MS SQL database.
I have procedure:
code:--------------------------------------------------------------------------------
CREATE PROCEDURE dbo.Reg_DropTable
@ModuleId varchar(10)
AS
declare @TableName varchar, @kiek numeric
set @TableName = 'reg_'+@ModuleId
begin
DROP TABLE @TableName <- HERE I GOT ERROR
end
GO
--------------------------------------------------------------------------------
I got error when using variable with tables names.
How to do this?
Ps. Number is send to this function and it must drop table with name Reg_[That number]
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Mar 14, 2006
Hello There,I'm trying to create a view that has calculations dependent oncalculations, where the problem resides is that each time I make acalculation I must create an intermediate view so I can reference aprevious calculation.for example lets say I have my_table that has columns a & b. now I wanta view that has a & b, c = a + b, and d = c + 1.this is grossly simplified, the calculations I actually use are fairlycomplex and copying / pasting them is out of the question.so what I have is my_view_a which makes column c, and my my_view_finalwhich makes column d (however, in my real application I have 5 of theseviews, a/b/c/d/e/)is there anyway I can consolidate all these views into one? I wasthinking of using a stored procedure with temp tables or somethingalong those lines.I just which I can use the aliases that I create for c in d in onestep.any insight would be greatly appreciated.
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May 6, 2004
Hello,
does the .NET framework support distributed transactions somehow?
The SqlConnection/SqlTransaction classes doesn't seem to support them...
TIA. -julio
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Mar 28, 2001
Hi Folks,
Is there anyway of running a Store Procedure in Database A that's going against database B? I have a store procedure that does a select on table A in database A and a select on table B in database B.
The problem is that the user have exec rights to the store procedure, which is an object in database A. The store procedure won't run because of permission rights to table B in database B.
Is there anyway of queryiny table B without giving the user select rights to that table? Anyone out there had the same problem?
thank you
Joe R.
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May 24, 2001
Hi to everyone!
Any experience handling a Store Procedure that has distribution transactions?
Here is a story.
We have a store procedure #1 that inserts or updates data in two tables A and B on SQL Server 7.0 then it calls another store procedure #2 that:
1. updates C table in the same database on SQL Server from Oracle Server
2. deletes that record on Oracle Server
3. inserts a record on Oracle from table A
4. inserts the same record into table D on SQL Server from Oracle Server.
People who wrote store procedure #1 put Commit Tran before executing #2.
The questions are:
1. Is it correct that we don't have Commit Tran for #2?
2. What do you think about Nested Begin - Commit Tran?
Any help is highly appreciated.
Sima
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Oct 3, 2001
I have a ODBC data source setup for the AS400DB2 which is AS400JDE
The linked server has been created and all the tables are visible within enterprise manager.
If I had a table F0101, datasource = AS400JDE and linked server of AS400
How would I query it.
I gave tried AS400.AS400JDE.DBO.F0101, but i get the following error message.
OLE DB provider 'MSDASQL' does not contain table '"as400jde"."dbo"."f0101"'.
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Jan 20, 2000
i added a linked sql 7 production server to my sql 7 development server so i could perform some data comparisons between the two
servers. after i linked in the server, i was able to see all the icons for the various tables in the production server. i went to query
analyzer and executed the following openquery:
select * from openquery(itdev_s08, 'select * from dbo.tablename')
it returned all the rows in the table. however, i want to comapre several different values so i needed a better way to query.
i then decided to try the distrbuted query below:
select * from linkedserver.dbname.dbo.tablename
however instead of a result set i got the error message below:
Server: Msg 7314, Level 16, State 1, Line 1
OLE DB provider 'SQLOLEDB' does not contain table '"dbname"."dbo"."tablename"'.
i went to BOL and it told me the only reason i would get this error is if the object did not exist or if i did not have permission
to use it. however, i know the object exists and i have the appropriate permission becuase i can obtain a result set from the
first query in the same query analyzer window. is my syntax incorrect? what am i doing wrong?
thanks!
tammy moisan
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Feb 4, 2004
Hi,
I am trying to execute a proc on Linked Server. Now as the Linked server name starts with 2, all of the following fails...
Any help to make it work highly appreciated...
exec [2Kxyz.SQLJobMon.dbo.usp_SQLAlertSMTPEmail]
exec 2Kxyz.SQLJobMon.dbo.usp_SQLAlertSMTPEmail
exec "2Kxyz.SQLJobMon.dbo.usp_SQLAlertSMTPEmail"
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