SQL 2012 :: Merge Replication - Identity Columns

Nov 3, 2015

I was reading this:

"Adding an identity column to a published table is not supported, because it can result in non-convergence when the column is replicated to the Subscriber. The values in the identity column at the Publisher depend on the order in which the rows for the affected table are physically stored. The rows might be stored differently at the Subscriber; therefore the value for the identity column can be different for the same rows."

I don't understand...

If I create a table with an identity column and publish it. Can the values on the subscriber be different when the data is replicated?

Suppose I have a this table:

1 Name1
2 Name2
3 Name3

Column 1 is identity field and column 2 the name of employees.

If I publish this table , the data can be inserted on the subscriber .pe, with 2 name1 and 1 name3 and 1 name2?

What about if the identify fields is a primary key?

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Merge Replication With Anonymous Subscribers And Identity Columns

Dec 21, 2005

Hi,

I read the BOL on how the publisher will had out identity ranges to subscribers, but it was not clear if this was also the case for anonymous subscribers. Will merge replication with identity columns work with anonymous subscribers that sync via HTTPS?

Thanks,
Darrell Young

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Identity And Merge Replication

Jan 31, 1999

Dear all,

How does an identity is affected by merge replication? Can sql control it so that there will be no replication conflict?

Here's the scenario, I have several tables with an identity column. the database resides in a server in the head office, there are several remote sites and remote users which will be running sql 7 desktop edition. Each remote will download only the data subset he is allowed to. Each site will be allowed add new rows on several table. Then they will update the head office server through replication.


Thanks

Reden

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Identity Seed Gone Bad In Merge Replication

Aug 8, 2007

Sever: sql 2000
Replication: Merge

Issue:
I am having an issue with my audit table, This table is filled by Triggers on various tables through the database. All triggers are defied with "not for replication"

I have allocated 500k ranges, with 80% threshold to the publisher and subscriber databases for this table. The table only holds 225,000 records.

From time to time I get the following error "The identity range managed by replication is full and must be updated by a replication agent. The INSERT conflict occurred in database 'PublicationName', table 'AuditHistory', column 'AuditID'. Sp_adjustpublisheridentityrange can be called to get a new identity range."

When I looked into the issue yesterday I noticed that the identity range being used by replication was 334300001 -> 334799999, however the maximum value in the table was 334300096, meaning that only 95 records were inserted, which means it is no where near the 80% threshold.

Somehow the identity seed on the AuditHistory table had been changed to 334800104, which is outside the allowable range.

My question is what could cause the identity seed to get set to such a high number??

any thoughts would be great!

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Merge Replication Identity Ranges

Apr 5, 2008

I have a database table with a simple identity column. As a starting point... when I run the following queries... this is what I get:

SELECT Max(AliasID) FROM Account_Managers
1300006

DBCC CHECKIDENT ('Account_Managers')
Checking identity information: current identity value '1300006', current column value '1300006'.


Now... I set up merge replication, with the plan of allowing SQL Server to manage my identity ranges for me. I set up my ranges to be 100000 on the publication, 100000 on the subscriber, with a threshold of 80.

I would EXPECT to see the constraint
([AliasID]>(1300006) AND [AliasID]<=(1400006)) on the publisher and
([AliasID]>(1400006) AND [AliasID]<=(1500006)) on the subscriber.

However... what I do get is:

([AliasID]>(1300006) AND [AliasID]<=(1400006) OR [AliasID]>(1400006) AND [AliasID]<=(1500006)) on the publisher and

([AliasID]>(1500006) AND [AliasID]<=(1600006) OR [AliasID]>(1600006) AND [AliasID]<=(1700006))


Can anyone tell me why I get the OR... which essentially makes my identity ranges twice as large as they should be?

Thanks in advance.

- Alan D. Nelson

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Replication :: Merge Identity Value Out Of Sync

May 16, 2015

We are running merge replication. My identity value was out of sync and the inserts stopped working. I Reseeded the identity value to 1500000 and ran "sp_adjustpublisheridentity" which set that to the new range (and table constraint) in the MSMerge file and table. I discovered my error and Reseeded the table back to 150000. How to I get the new range to be created when it is LESS than 1500000 in the MsMerge file???? Can I use the sp_restoreidentity....???

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Identity Columns And Date Columns On Transactional Replication

Sep 16, 2006

Hi,

I am planning to use transacational replication (instead of merge replication) on my SQL server 2000. My application is already live and is being used by real users.

How can I ensure that replicated data on different server would have exact same values of identity columns and date columns (where every I set default date to getdate())?

It is very important for me to have a mirror image of data (without using clustering servers).

Any help would be appreciated.

Thanks,

-Niraj

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Merge Replication Identity Range Error

Jan 8, 2008

Hi all i have setup merge replication with one publisher and 3 subscribers



The replication worked fine for about 2 months then i recieved the following error on all my subscriptions



The Publisher failed to allocate a new set of identity ranges for the subscription.
This can occur when a Publisher or a republishing Subscriber has run out of identity
ranges to allocate to its own Subscribers or when an identity column data type does
not support an additional identity range allocation. If a republishing Subscriber has
run out of identity ranges, synchronize the republishing Subscriber to obtain more
identity ranges before restarting the synchronization. If a Publisher runs out of identit
(Source: MSSQL_REPL, Error number: MSSQL_REPL-2147199417)
Get help: http://help/MSSQL_REPL-2147199417


I have updated my sql server to service pack 2

The publisher is sql Standard edition and the subscribers are Express edition



Any help would be great

Thanx

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Identity Primary Field In Merge Replication

Jul 23, 2007

Hello I currently have a merge replication set up with 4 subscribers. A primary field for one of my tables is set to a integer indetity.



What Ive noticed is that depending on which database I enter data into, the indentity field (primary key) is set within a certain range I.e



On Server 1 - Values start from 1 then 2,3,4 etc etc



Server 2 - 24001, 24002, 24003 etc etc



Server 3 - 46001, 46002, 46003 etc etc



Server 4 - 68001, 68002, 68003



My question is what happens when these ranges eventually conflict? Do they automatically gain a different range such as 142 001, 142 002 etc etc?



Ive tried looking in SQL Help, and a quick search here, Im just after some confirmation before I implement this to my app.



cheers

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Can I Set A Default Range For The Identity Values For Merge Replication?

May 8, 2006

Hello,

We have a couple of tables that can have quite a bit of data each day prior to replication. Can we increase the default values for a table for each subscription? For example we have a table called table1 and on the sqlexpress client they could enter in 10000 rows a day, on table2 it's just 100 rows a day. How can we increase the values to where we do not get the error for table1 stating that the insert failed because it conflicted with the identity range check constraint. Thanks in advance.

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Merge Replication - Setting Identity Range Management.

Feb 2, 2007

Hi All;

I am trying to set up Merge Replication on a database and want to set the IdentityRange Management to Auto for all my tables which use a Identity column.

In the wizard, on Article Properties Page, I can do this by selecting a Table, and going for its properties, but this is a tedious task as I have ~300 tables to set this property on.

Is there another way or a global location where I can set the property to true and even mention the ranges and the threshold, so that I dont have to pick each table and set it individually.

I am also aware of the fact that I can Generate a Script and modify it and run that, but I was looking for some way to do this in the wizard.

Thanks!

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Replication With IDENTITY Columns

Jan 16, 2001

(Long post)

I have a production database with about half the tables using
IDENTITY columns for PRIMARY KEYS. This system is configured as both
a Publisher and a Distributor. We are using Transactional Replication
without updates. The SQL Server Agent runs every hour to pick up any
changes and replicate them to the Subscriber (another SQL Server
machine configured as our failover server).

Both servers are running SQL Server 7.0 (original, no service packs)
under Windows NT 4.0 (SP4).

The failover server (the replication Subscriber) will only be used if
the primary server goes down. And hopefully, only for a short time
before the primary server comes back online. During the time that the
failover is actually being used, the application will not make any
changes to the database.

The IDENTITY values that are replicated need to stay with their
original values. The replication process CANNOT assign new values to
these columns when there are inserted into the database on the
Publisher (i.e. failover server)

My question is: According to the documention, I can add 'NOT FOR
REPLICATION' to the IDENTITY columns and the values will be
preserved. But a collegue of mine says that resets the IDENTITY
sequence on the subscriber and the 2nd time a row gets inserted on
the Publisher, the values get messed up. On his system, he calls a
stored procedure for the tables with IDENTITY columns, and in the
stored procedure, he executes a 'SET IDENTITY_INSERT OFF', then
INSERTS the row, then 'SET IDENTITY_INSERT ON'. He claims that this
approach solved his issues with IDENTITY columns.

Who is right? Do I have to create a stored procedure for replication
for every table with an IDENTITY column, or can I just add 'NOT FOR
REPLICATION' and SQL Server will handle the rest?

NOTE: Upgrading to SQL Server 2000 is NOT an option right now.
Although, if a Service Pack for 7 fixes this, that might be an option.

Thanks in advance for any help you can shed on this issue.

Dave

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Replication Of Identity Columns

Sep 8, 1999

We are trying to run replication from one server to another. Most of the tables in the publishing database have identity columns set. At one point the subscribing database had a match of identity columns and primary keys matching the publishing database. Obviously with a primary key set on the subscriber there would be conflicts with duplicate key inserts. We disabled the identity columms and droped the indexes and the data was able to replicate over. However, we discovered that the identity columns, which are used to generate id's on many of our tables, were not replicating over to the subscriber. In fact a null value was being inserted into the subsriber database.

Anyone seen this before? What, if there is one, is the solution?

Thanks,

Brad

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Identity Columns In Replication

Jan 17, 2000

hi there.
I was wondering is there any way that you can use an Identity Column on both a subcribing and Publishing table in Replication,
I am receiving errors when I run Replication with Identity Columns,
Thanks in advance
Fin

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Merge Replication Filtering Columns

May 25, 1999

I think I want to use merge replication but filter out one column but when I'm setting up the publication I only see row filtering available?

Is this just not possible?
Thanks for any help
Dan

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Merge Replication Columns Limit??

Dec 4, 2006

Hi,

I am experiencing a wired problem withe merge replication and SQL 2000 SP4.

We had replication working for 4 years without a problem, one of the table that we replicate has been growing in columns, now it has 55 columns.

I have noticed a problem, when I update the last column on the table and waits for the change to be updated on the subscriber the change is not there. But if I replicate the first 40 columns it works.

Changes made:

1) Upgraded to SP4
2) Added some extra fields using sp_addreplcolumn

Is this a known bug? Any ideas?

Regards

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Issue With Identity Columns After Replication Changes

Mar 28, 2007

Dear all,



We have an application that use merge replication between MSDE and Devices with SQL CE.



Due to a major application changes, we have to change our replication on all our workstation. Our process is the following:

- drop current replication

- recreate our replication



After first check our replication seems to work but after some test we have identify that all identity ranges have been reset on the workstation. As side effect, device start to reuse existing range and also existing value in the range.

- Have you ever encounter this type of issue?

- What can create it?

- Is our approach fully inappropriate?



Please let me know if you need more information,

Best regards,



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Addition Of Columns In Table, Which One Use In Merge Replication.

Nov 29, 2004

Dear all participants,

I manage complete online system for two locations, connected via dialup lease line. I have to used merge replication for the same data should be at both locations. It is working fine, I dont like disturbe it but current requirement is addition of two column in one table which one as also use in merge replication.

How I can add aforesaid columns in table x, column name c1 numeric , c2 character?

What is impact on replication?

Let me know step by step.

Thanks in advance.

Thanks R.Mall

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SQL 2012 :: Server Merge Replication

Oct 20, 2014

I have some problem about Merge Replication.i'm trying to merge Database A to Database B in local Server. So Database i want publisher contain this:

Because only Data in Table change therefore so i choosed it 100% Snapshot was generated after that ( Problem not a valid window user i already figured out )After that. I created Local Subscription in same Server ( Pull subscriptions and Subscription type: Client ),now problem is throw out."The schema script 'vwBuyADT_513.sch' could not be propagated to the subscriber."

I tried research so many time in Google but any information i found isn't useful for this problem.This problem still can ignore,Synchronization still running. But after 4-5 Hours running..This messages throw out: "The Publisher failed to allocate a new set of identity ranges for the subscription. This can occur when a Publisher or a republishing Subscriber has run out of identity ranges to allocate to its own Subscribers or when an identity column data type does not support an additional identity range allocation"

My question is:
Is there anyway solve 2 probem? :
1. "The schema script 'vwBuyADT_513.sch' could not be propagated to the subscriber."
2. "The Publisher failed to allocate a new set of identity ranges for the subscription. This can occur when a Publisher or a republishing Subscriber has run out of identity ranges to allocate to its own Subscribers or when an identity column data type does not support an additional identity range allocation"

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SQL 2012 :: Merge Replication Environment

May 10, 2015

We are working in a Merge replication environment where we have SQL Server 2005, 11 publications and 2 subscribers.We used to get lot of incidents from the Application owner for blockings, recently we faced a situation where the lead blocker is in sleeping state and the session was used by the merge agent.Checked the query that the session was running, it was sys.sp_MSenumgenerations90;1.

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SQL 2012 :: Merge Replication Not Replicating All Changes?

Oct 7, 2015

We have a publisher sending data to two remote subscribers. Each of these sites is updating a different field in a particular table with its site name and the current date stamp. This data should then sync to each database to show how up to date the last data change was. This lets us keep an eye on whether sync is good or not.

The problem I've got is one subscriber isn't copying its row to the other servers anymore. It gets the row updates from the other sites in the same table but its own updates to this field aren't getting sent across. Nothing shows up in conflict manager for it and nor should it as no other subscriber should be updating this field. If I validate the subscription the field when then get synced but again no updates after the validation will transfer. The other problem which may be related or indicating another issue is the data transfer rate shown in replication monitor is less than 0.1 rows/sec. Reinitializing isn't an option.

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SQL Server 2012 :: Primary Key And Identity Columns

May 23, 2015

Can a Primary Key column also be a Identity column? The reason I am asking this question is because I have created a table and each time I insert data into the Address Table I am also inserting the AddressID, how do I get the Primary Key (AddressID column) to self generate ID values.

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SQL 2012 :: Security For Web Synchronization (Merge Replication)?

Feb 8, 2015

I am trying out merge replication and using web synchronization.However, I am worried that I am missing something because the way it is set up, it strikes me as a bit too insecure.

According to the best practices and security articles on Technet, I am given to understand that:

The SQL Replication Listener (read: the application pool account that will be running the replisapi.dll) has to be the db_owner to both distribution and publisher and be on the PAL list. Windows authenication should be used. That means the merge agents wouldn't need to know the password for those logins.

The basic authenication can be used (with SSL) to authenicate into a Windows user account to then connect to the replisapi.dll.

Here's the rub - I assumed that all I needed was a basic no-rights user account to be then given the execute permission on the replisapi.dll & read permissions to kick off the process. When I browse to the replisapi.dll and authenicate using the no-rights user, I get the expected "SQL Server WebSync ISAPI" message. But when I then run the merge agent, it fails saying that login to the distribution failed for the no-rights user. If I use the application pool's account, then I am able to run merge agent successfully.

But that means I am now looking at storing the password to the application pool account on client. I might have had missed a crucial step to ensure that the logins to the distribution & publication databases are done using the application pool account, not the user authenticated via IIS basic authentication?

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SQL 2012 :: Update Query Is Slow With Merge Replication?

Dec 3, 2014

I have a database with enabling merge replication.

Then the problem is update query is taking more time.But when I disable the merge triggers then it'll update quickly.

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SQL 2012 :: Error In Conflicts Tables In Merge Replication

Feb 13, 2015

There is an error in one of my merge publication. The error is,

The change for the row with article nickname 2336003 (test), rowguidcol {436456F0-F5AD-E411-80CF-5CF3FC1D2D76} could not be applied at the destination. Further information about the failure reason can be found in the conflict logging tables.

When i checked my tables I got following values in rowguid column

publication 436456F0-F5AD-E411-80CF-5CF3FC1D2D76
subscriptionD824D120-23AD-E411-80E3-00155D0E1001
conflict tables 689C6A61-5359-4BB5-BECD-B03F5F94D79A

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SQL 2012 :: Initializing Subscription With Web Synchronization (merge Replication)

May 9, 2015

I'm trying out a set up as following:

SQL Server 2008 standard as the publisher
SQL Server 2012 express as the subscriber

and I tend to use web synchronization; there is no domain trust.

After following the instructions at MSDN for configuring web synchronization, I have an error that I can't get past - after creating the initial snapshot on the publisher, I try to run replmerg.exe at the subscriber and I always get this error:

"The subscription to publication 'TestReplication' has expired or does not exist."

If I refresh the publisher's "Local Publications" and look within the "TestReplication", it does show that the subscriber is a known subscriber. Likewise, if I refresh subscriber's "Local Subscription", it has an entry for TestReplication publication.

I already verified that the user used by Replisapi.dll has the read permission to the snapshot folder, is a member of PAL, is db_owner of the publishing database and distribution database. I am using self-signed certificate for this test and I have already installed the certificate at the subscriber machine so that HTTPS is trusted. I can run diagnosis from subscriber so I know subscriber can reach and logs are being left at the publisher's IIS.

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SQL 2012 :: Complex Filter For Server Merge Replication

Jul 26, 2015

We have a table in an SQL Server 2012 database that stores tree-like structures. Simplified for the purpose of my question, it has the following format:

Id int identity,
ParentId int,
GroupId int

Each record of the table represents an object identified by Id. An object may or may not have a parent in the same table, such that object.ParentId = parentObject.Id. A root object has ParentId = NULL. There are multiple root objects, so the table in fact stores multiple trees. What’s important is that the tree depth is not fixed, i.e. theoretically there can be any number of ancestor generations for an object. GroupId is a property of a root object; in theory none of the children of a root object has to have GroupId <> NULL; it can be assumed that any child has the same GroupId value as its root object.

A sample table having two roots (one grandparent and one parent), one non-root parent/child and 4 child roots:

Id ParentId GroupId
----------------------------------------------------------
1 NULL 200 root grandparent
2 1 NULL non-root parent/child
3 2 NULL child
4 2 NULL child
5 NULL 300 root parent
6 5 NULL child
7 5 NULL child

The table is not normalised, i.e. there’s no separate {root_object : group} table. However I don’t think normalising the table would solve the problem.

Now the problem. We need to set up merge replication from the table above (Master table) to the table of the same format in another DB. We need to replicate only those rows of the Master table that have a certain fixed GroupId value, e.g. 200 in the example above. If we ensure that GroupId in all descendant objects of a root object has the same value in the table as the root object itself that would be trivial. The table would look like this:

Id ParentId GroupId
----------------------------------------------------------
1 NULL 200 root grandparent
2 1 200 non-root parent/child
3 2 200 child
4 2 200 child
5 NULL 300 root parent
6 5 300 child
7 5 300 child

And the filter would look like this:

WHERE GroupId = 200

However out of performance considerations, we would like to avoid if possible filling GroupId for the descendant objects, because as it must be clear from the above, GroupId for a descendant object is quite easily deducible via a stored procedure or UDF (just need to go up the tree until ParentId = NULL). The problem is, I don’t know how to achieve this in a merge replication filter: it would only allow WHERE conditions and joins. I’ve have not had much luck with joins for merge replication in general, but here we have more complex algorithm, because the number of tree levels can be different for every object. And merge replication would not allow using UDF…

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SQL 2012 :: How To Resolve Data Inconsistent Errors In Merge Replication

Aug 12, 2015

How to resolve the data inconsistent errors in merge replication ?

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SQL 2012 :: Seed Value Of Identity Columns Jumps / Gaps By 1000 After Restarting It?

Jan 9, 2015

We just switched from Sql server 2008R2 to Sql server 2012.I am facing one problem with identity Columns "When ever i restarts my sql server,the seed value for each identity column is increased by 1000 (For int identity column it is 1000 and for big int it is 10000).

"For Example if seed value of any table was 3 then after restarting sql server will be 1003 if i again restart sql server it will be 2003 and so on."

After searching on google i found that it is a new feature (don't know what is use of it) in sql server 2012 and having only two solution if you want old identity concept

1. Use sequence object -

a) I am using same database in sql server 2008 and 2012 both so can't use sequence in 2008.

b) if i go with sequence then need not change save procedure for each table,which is bulky task for us.

2. Use Trace Flag 272 (-T272)

I can go with this solution because there is need not do any changes in my application.Some one suggested me that add -T272 in startup parameter,after this sql server identity column will work normal as previous version.I did the same but it is not working.

I don't want to do any changes in my database structure.

how to use this -T272 or why it is not working.

I don't want to use this new identity feature how to suppress it. Why -T272 is not working.

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SQL Server 2012 :: Insert Into Table With Identity Columns From Another Table

Dec 23, 2013

I just created a new table with over 100 Columns and I need to populated just the first 2 columns.

The first columns to populate is an identify column that is the primary key. The second column is a foreign_key to an other column and I am trying to populate this columns with all the values from the foreign_key value. This is what I am trying to do.

column1 = ID
column2= P_CLIENT_D

SET IDENTITY_INSERT PIM1 ON

INSERT INTO PIM1 (P_CLIENT_ID)
SELECT
Client.ID
FROMP_Client

So I am trying to insert both an identity values and a value from an other table while leaving the other columns blank. How do I go about doing this.

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Replication :: Difference Between Snapshot And Transaction And Merge Replication?

May 26, 2015

What is the main difference between snapshot and transactional and merge replication?

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Identity Range Managed By Replication Is Full And Must Be Updated By A Replication Agent. Error Message Makes NO SENSE.

Mar 6, 2007

Hello,I'm getting the following error message when I try add a row using aStored Procedure."The identity range managed by replication is full and must be updatedby a replication agent".I read up on the subject and have tried the following solutionsaccording to MSDN without any luck.(http://support.Microsoft.com/kb/304706 )sp_adjustpublisheridentityrange (http://msdn2.microsoft.com/en-us/library/aa239401(SQL.80).aspx ) has no effectFor Testing:I've reloaded everything from scratch, created the pulications from byrunning the sql scripts generated,created replication snapshots andstarted the agents.I've checked the current Identity values in the Agent Table:DBCC CHECKIDENT ('Agent', NORESEED)Checking identity information: current identity value '18606', currentcolumn value '18606'.I check the Table to make sure there will be no conflicts with theprimary key:SELECT AgentID FROM Agent ORDER BY AgentID DESC18603 is the largest AgentID in the table.Using the Table Article Properties in the Publications PropertiesDialog, I can see values of:Range Size at Publisher: 100,000Range Size at Subscribers: 100New range @ percentage: 80In my mind this means that the Publisher will assign a new range whenthe Current Indentity value goes over 80,000?The Identity range for this table cannot be exhausted! I'm not surewhat to try next.Please! any insight will be of great help!Regards,Bm

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How Do We Add A New Column To A Merge Replication Article, But Specify It As Not For Replication?

Aug 30, 2007

Hi all,

I know that adding a column using ALTER TABLE to add a column automatically allows SQLSERVER 2005 to replicate the schema changes to the subscribers, however, I would like to add a new column to an existing article that is being used for merge replication, however, I don't want this column to be replicated. Re-initialising the subscriptions is not a option. Help would be appreciated.

I am using SQLSERVER 2005 (SP1).

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