Data Loss In Transactional Replication
Apr 11, 2007
We have setup transactional replication across several databases using SQL Server 2000 spread across multiple sites in a fully connected network. There is one main table from which data is replicated from the publisher to the destination. Horizontal filtering is being used on this table to enable sending/routing of the records to the correct DB(site). It has been observed that the documents/records are getting lost between some sites. Say 10 documents are being sent fron the publishing database but only 5 are being received at the destination database although the sent history for all the 10 documents is available at the publishing database.
Can anyone guide on how to analyse and resolve this problem? Can unreliable network be the issue, If the network is not reliable and the connection is lost during replication how does replication ensure that no data is lost?
View 1 Replies
ADVERTISEMENT
Mar 18, 2015
I have automated process, which synchronizes a transactional publication using initialize from backup approach. It drops subscriptions and puts them back again once the restore on the subscriber is completed.
Dropping the subscriptions causes a lot of blocking and deadlocking. I've decided to remove those steps, but it causes loss of data on the subscriber.
Is it a must to drop and re-create the subscriptions during such process? If not, how can I avoid the loss of data?
View 0 Replies
View Related
Dec 6, 2006
hi,
Im using merge replication.I have created one publisher with dynamic filtering and i have creted two subscribers from it(pull subscription).It was working fine.but after sysnchronizing 2-3 times data from some tables went missing
can any one help me....
thanks and regards
Dhanya
View 3 Replies
View Related
Jun 27, 2006
We had merge replication setup between 2 tables, Table A and Table B using SQL 2000. This was working 100%. The users asked to disable updated/deletes to both these tables if data existed on 2 other tables. Table AA and Table BB. We implemented it as follows:
1) Created Insert/Update/Delete triggers for Table A & B. It basically check for Table A is there a record in Table AA, if it exists, raise an error and don€™t commit.
2) Removed all foreign constraints from Table AA and BB
3) Added Table AA and BB to the current replication.
Then all hell broke loose, we got conflicts all other the place saying that Table AA cannot be updated because records does not exist in Table X. To our surprise we found triggers generated by Erwin in 1998 €“ that check for €œforeign contsraints€? and removed them immediately.
We continued to get conflicts but could see from the error messages it was generated by the triggers in point 1. We added the NOT FOR REPLICATION clause and everything has been running smoothly or so we thought€¦..
After 2 months we got a call that data is missing. It€™s random data and the only explanation I have is that replication caused that. My biggest reason for saying this is tracking the application audit trail I€™ve found that all the data missing was added during the period we had all the conflicts.
I need a solid explanation for this and can anyone confirm that this is possible?
View 4 Replies
View Related
Apr 12, 2007
I need to move my database servers from one location to another. The issue is that I have over 200 databases to move and my clients can't afford a downtime. The collective volume of all the databases is over 2.5 TB and growing.
I am thinking to copy these databases in batches over the WAN to the new location and replicate them using Transactional replication till I have all the databases moved and synchronized.
Will it be wise enough to use replication for synchronizing 200 databases or is there a better approach which I can use to move these databases with minimum downtime and compromise on performance of applications.
Note: Migration is from SQL Server 2000 to SQL Server 2005.
Thanks in advance.
Ritesh
View 1 Replies
View Related
Apr 12, 2007
I need to move my database servers from one location to another. The issue is that I have over 200 databases to move and my clients can't afford a downtime. The collective volume of all the databases is over 2.5 TB and growing.
I am thinking to copy these databases in batches over the WAN to the new location and replicate them using Transactional replication till I have all the databases moved and synchronized.
Will it be wise enough to use replication for synchronizing 200 databases or is there a better approach which I can use to move these databases with minimum downtime and compromise on performance of applications.
Note: Migration is from SQL Server 2000 to SQL Server 2005.
Thanks in advance.
Ritesh
View 1 Replies
View Related
Mar 19, 2008
Hi All...
This is my first time solving replication problem for me.Do help me out.
We have two servers A [Publisher] and B [Subscriber]. Today users complained there is data mismatch.I just did a Select Top 10 records from both A & B, and there is differences in the records.I have to fix this problem by today.What are the steps I should take to find the
Validate the mismatch records?
Sync both tables ?
Ensure Mismatch does not happend in future?
There is no error mssg that indicate's failure of replication
View 7 Replies
View Related
Feb 15, 2007
In SQL Server 2005 SP1 we have a Transactional Replication with only this property in the articles:
Action: Delete data...
Ant this property in the publication:
Don't send schema changes
We have in the foreign keys NOT FOR REPLICATION = NO (Exigir para replicacion = "Si" in Spanish).
We have one problem and one doubt:
The problem is that when the sincronization goes wrong the table in the suscriptor is empty !!!!!. It seems that goes wrong because the foreign keys. The question is = Is necessary that NOT FOR REPLICATION = YES in all the tables?, we don't want any check in the sincronization.
Why the destiny tables appears empty?. Is very dangerous.
Thanks.
View 2 Replies
View Related
Apr 15, 2015
From distribution db, which table(s) store info about filtered data?
View 0 Replies
View Related
Aug 21, 2007
Sql Server 2000
I am looking for bidirectional transactional replication using updatable subscribers (queued or immediate) . Is it possible to replicate the image data from the updatable subscribers to the publisher. I understood that the Image data can't be replicated to the publisher from the updatable subscriber. I am not using the WRITETEXT or UPDATETEXT. I am using just INSERT and UPDATE for image data type transactions.
Any thoughts on this is greatly appreciated.
Thanks in advance
View 3 Replies
View Related
Dec 1, 2006
Hello,
I'm interested in combining the Peer-to-Peer Transactional Replication and Standard Transactional Replication to provide a scale out solution of SQL Server 2005. The condition is as follows:
We may have 10 SQL Server 2005 (1 Publisher + 9 Subscriber) running transactional replication in the production environment and allow updates in subscribers. To offload the loading of the publisher, we plan to have 2 Publisher (PubNode1 and PubNode2) using Peer-to-Peer Transaction Replication and the rest 8 subscribers will be divided into 2 groups. The subscribers 1-4 (SubNode1, SubNode2, SubNode3, and SubNode4) will be set to be standard transactional replication subscribers of PubNode1, and the rest 4 subscribers (SubNode5, ..., SubNode8) will be set to be standard transactional replication subscribers of PubNode2.
Is it possible to setup above 2 Publisher + 8 Subscriber topology?
Also, could we set the 8 subscribers with updatable subscriptions to achieve each node is updatable?
We do not plan to set all the 10 nodes using Peer-to-Peer Transactional Replication as it is necessary to make sure n*(n-1)/2 (i.e. 45) peer-to-peer connections is reliable. It seems that the maintenance cost is high if the servers are not in a LAN and the topology is very high coupling. So we prefer to divide the 10 nodes into 2 groups and reduce the cost of each node to maintain the connections to all other sites.
That's the scenario.
Any feedback is welcome and appreciated.
Thanks,
Terence
View 4 Replies
View Related
Dec 2, 2005
I'm currently trying out transactional replication with updatable subscriptions across two 2005 servers.
View 3 Replies
View Related
Sep 13, 2007
Hi,I have transactional replication set up on on of our MS SQL 2000 (SP4)Std Edition database serverBecause of an unfortunate scenario, I had to restore one of thepublication databases. I scripted the replication module and droppedthe publication first. Then did a full restore.When I try to set up the replication thru the script, it created thepublication with the following error messageServer: Msg 2714, Level 16, State 5, Procedure SYNC_FCR ToGPRPTS_GL00100, Line 1There is already an object named 'SYNC_FCR To GPRPTS_GL00100' in thedatabase.It seems the previous replication has set up these system viewsSYNC_FCR To GPRPTS_GL00100. And I have tried dropping the replicationmodule again to see if it drops the views but it didn't.The replication fails with some wired error & complains about thisviews when I try to run the synch..I even tried running the sp_removedbreplication to drop thereplication module, but the views do not seem to disappear.My question is how do I remove these system views or how do I make thereplication work without using these views or create new views.. Whyis this creating those system views in the first place?I would appreciate if anyone can help me fix this issue. Please feelfree to let me know if any additional information or scripts needed.Thanks in advance..Regards,Aravin Rajendra.
View 2 Replies
View Related
Sep 2, 2015
I have been researching on the proper steps or sequence to follow to completely remove SQL Server 2012 Transactional Replication. Â I have read articles about using SSMS as well as using replication stored procedures and some procedures use SQLCMD or just regular TSQL executed in SSMS. Â I have also read articles where people said all you really need is connect to the Publisher instance, find the publication you want to remove and choose "Delete" and everything will be taken care of behind the scene. I have three SQL servers that participate in transactional replication. Â SQL-P (publisher),Â
SQL-D (distributor) and SQL-S (subscriber). Â Do I need to connect to the distributor instance and the subscriber instance when removing transactional replication or is it just really connecting to the publisher and click delete on the publication? I want everything gone including any metadata, systems tables, distributions db and any other replication objects created during the initial configuration.
View 6 Replies
View Related
Aug 3, 2006
Hello
I have an odd problem that is driving me nutz. I have a very simple SSIS package that imports a 5 colum flatfile into a sql Server 2005 Table.
When I created this package with the wizzard, it will execute perfectly fine and processes all rows into the destination table.
But when I hit F5 to execute it manually it will fail before inserting a single row.
The error it generates is (Spalte 5 is a Datetime in the format DD.MM.YYYY) :
Error: 0xC02020A1 at Datenflusstask, Source - Daten_NC_1_txt [1]: Data conversion failed. The data conversion for column "Spalte 5" returned status value 2 and status text "The value could not be converted because of a potential loss of data.".
Error: 0xC0209029 at Datenflusstask, Source - Daten_NC_1_txt [1]: The "output column "Spalte 5" (25)" failed because error code 0xC0209084 occurred, and the error row disposition on "output column "Spalte 5" (25)" specifies failure on error. An error occurred on the specified object of the specified component.
Error: 0xC0202092 at Datenflusstask, Source - Daten_NC_1_txt [1]: An error occurred while processing file "C:WorkDaten_NC_1.txt" on data row 177.
Edit: Modified the Title so it properly reflects the Problem & the Solution
View 3 Replies
View Related
Oct 9, 2007
I am working on bringing our disaster recovery site to be a live site. Currently we replicate to one of out servers (server B) with merge replication (from server A). Server A also does one way transactional replication form some table to several other servers including servers at the DR site.
This setup is not going to be fast enough for what we need so I am wondering if a table is receiving merge replication will the merge updates also replicate down the transaction path??
Example...
Server B update a row and merges to Server A. With this update them replicate (via transactional) to Server C??
thanks...
View 5 Replies
View Related
Jul 20, 2005
Hi,I have a big problem with a database in MS SQL SERVER 2000.the rows into the some tables, for the second time, have been mixed betweenthey without appearing reason.the application that uses the db is totally TRANSACTIONAL and they do notexist query that they do not have clause WHERE.The database is on a computer with NAS architecture.I have this problem for the first time in 5 years of use of MS SQL SERVERCan someone help me?TIA
View 2 Replies
View Related
Aug 29, 2007
Hi,
I am getting this error when my ssis package is running
Data Conversion failed due to Potential Loss of data
the input column is in string format and output is in sql server bigint
the error is occuring when there is an empty string in the input. what should i do to overcome this
It is an ID field and should i convert to bigint or should i leave it as char datatype is it i a good solution or is there a way to over come this.
View 4 Replies
View Related
Jul 30, 2001
On my distribution server there is a directory called mssql7
epldataunc that houses the bcp, sch and idx files for replications. A directory is created for each publication. Most directories are empty but some contain all the table idx, sch and bcp files for the publication. Some of these files are over 6 month. Does anyone know if these files are neccessary to keep and why do only some publications have these files. I am wondering if they are kept when you push the publicaiton and it errors out originally and you have to restart it? If any one can shed some like on this I would appreciate it.
View 1 Replies
View Related
Dec 28, 2000
Hi,
I am planning to do a transactional replication from production server to reporting server. In one of my database is having 150 tables in it, only 100 tables are having primary key . Remaining tables are not have primary keys. So i am not able to do transactional replication for those 50 tables. Could any one tell me how i have to approch transactional replication. Because i need to have production data at my reporting server in regular interval.
So pls suggest me .
I am using Sql 7.0 with service pack2.
Thanks!
Kavira
View 1 Replies
View Related
Feb 13, 2001
I have a problem with transactional replication in SQL Server 7. I have two databases (a publisher-distributor server and a suscriber server) and when I do an UPDATE in the publisher database the Log Agent Reader reads the UPDATE as an DELETE-INSERT and when the suscriber pull the suscription and try to do first the DELETE the transactional replication stops because of the Foreign Keys in the suscriptor database (that are the same as the publisher).
If anybody knows how to solve it, please tell me
Thanks
View 1 Replies
View Related
Nov 1, 1999
I have two servers networked via workgroups (no domain) and am trying to install Transactional Replication. Everything appears to install correctly, but when I run the initial Snapshot Agent I get the following error -
The process could not create file 'CONCEPCIONC$MSSQL7ReplDatauncCONCEPCION_Erik_Rep lication_Erik_Replication19991029153207Employer.sc h'.
Access is denied.
The SQLAgent is starting with same user account on both machines - admin rights and the same password. I have added this user to the (
epldata) folder permissions as well. I even see a "Employer.sch" file in the directory.
What am I missing?
View 2 Replies
View Related
Oct 25, 1999
Hello,
I am planning to implement replication between two servers (either snapshot/transactional). Those two servers are physically connected but we don't have domain concept i.e we connected both servers physically and it can be pinked from each other, but not under any domain (not also under different domain). How should I register SQL server& agent services to start with 'Service startup Account'. In this case I cannot start both servers using same domain Account, they how can I relate...
Thanks
View 1 Replies
View Related
May 22, 2003
Hi guys can anyone help me with this issue. if so thankyou kindly.
1. created transactional publication (for tables, stored procs & views )
2. created empty database at subscriber
3. set up pull subscription at subscriber
4. ran the initial snapshot agent at the publisher
5. checked the schema files & found out it hadn't scripted the primary keys on the tables.
Problem: PRIMARY KEY AINT GOIN ACROSS, COULD ANYONE TELL ME IF IVE MISSED SOMETHING? THANK YOU MUCH APPRECIATED GUYS.
? Could it be that it is not picking up the primary keys on the tables because I am replicating stored procs and views with that publication?
? Should I break my publications into 3; say 1 for each object?
Thank you guys for taking the time to read this.
View 1 Replies
View Related
Feb 24, 2005
Hi
I am tring to implement transactional replication.
How do i publish tables which donot have primary keys?...because transactional replication seems to publish only the tables which has a primary key.
Thanks
Madhukar
View 7 Replies
View Related
May 1, 2002
Hello all! I am setting up my first Replicated database, and want to get this right.
We are a Newspaper, and I will be Publishing the database that is the back end of the web server. The goal is to load balance the web site as well as to have a second identical server in case something goes wrong. Both the Subscriber and the Publisher need to be kept in sync as new articles are posted, so my client will just be updating the Publisher. But I'd like to keep a single set of usage statistics, so I was thinking of using Immediate Updating so the Subscriber can update the Publisher using two-phase commit.
What will happen if the Publisher shuts down and an update is attempted on the Subscriber? Will it just hang? Let's assume the worst - what if my Publisher is kaput? How do I determine that my other database is a Subscriber; and how do I stop it from being a Subscriber?
Thanks in Advance,
View 1 Replies
View Related
Jun 28, 2002
Hi
I have a requirement for pushing transactional publication to various subscribers. Each subscriber will need to receive a different subset of rows from a table. So I need all rows published, but with horizontal filtering at subscriber level. Is there a way of applying filtering at the subscription level.
Thanks
Tariq
View 1 Replies
View Related
Sep 11, 2007
I am using transactional replication between two SQL 2005 databases. On Sunday evenings, we run a maintenance plan that rebuilds the indexes on the publisher DB. When the plan runs, the replication receives errors and cannot continue. The error appears to be at the publisher level. The publisher runs continually and the subcriber runs every 10 minutes. The error states "cannot run sp_replcmds" Other than Sunday, everything runs fine.
Thank you
View 1 Replies
View Related
Jul 7, 2015
I want to set up the transactional replication. How many service accounts we need and what kind of permissions it required in windows level?Only two servers we are using. Pub/Distributor and Subsciber.Which option is better Push or pull?
View 1 Replies
View Related
Jul 27, 2007
at the 'specify articles" on the wizard. Some tables have a key next to it that doesn't let me select them to be replicated. This is happens on transactional replication. But if i do a snapshot, the keys next to the tables are not there.
How am I able to select those tables with a key?
=============================
http://www.sqlserverstudy.com
View 8 Replies
View Related
Jan 11, 2006
Hi All!
Need help guys... I'm new to SQL Replication, though I successfully created a transactional replication testing on my machine using PUBS DB and a separate DB.
I'm planning to establish/setup a Transactional Replication. There are two SQL Servers, one is being used by WebApp_1 and the other is being used by WebApp_2. Both servers are maintain by different administrators and situated on different domain/location (both used Win2003 Server). We will transfer some data from Server_1 to Server_2. Server_1 will be setup as Publisher and the other is the Subscriber, then additonalServer_3 will be added and will serve as the Distibutor.
My questions are:
1. Do I need to request separate domain account from the two different servers to establish connection to the Distributor?
2. Will the User databases from Publisher in compromise/affected as far as database settings and data are concerned?
3. Any useful links?
Any help provided will be greatly appreciated...
Thanks!
View 1 Replies
View Related
Jun 13, 2008
I am using SQL Server 2005.
I am trying to import data from CSV files into an SQL Server table using the Import wizard. The text qualifier is double quotes ("), column delimeter is a comma (,), first row has column names. One of the field name is "id", which is a GUID, whose datatype in SQL Server is uniqueidentifier. It looks like this in the file:
..."data","data","dbf7edf8-0ca8-4e53-91e3-5901cdc1819a","data"...
As you can see, there are no enclosing curly braces for the guid value. The DTS chokes on this and throws this error:
The value could not be converted because of a potential loss of data
If I add curly braces like this {dbf7edf8-0ca8-4e53-91e3-5901cdc1819a}, it imports with no problem.
Is there way to import this type of data, because there is no way I can edit these files, and I would prefer not changing the datatype of the id field?
Or is this a limitation of SQL Server?
Thanks,Bullpit
View 5 Replies
View Related
Jul 23, 2005
Hi All,I'm trying to track down a mysterious problem we're experiencing inwhich updates and inserts to tables in our mssql2k server appear to be'disappearing.'To explain our situation:We have a web page (written in ASP, if that's relevant) on which weaccept enrollment information.When that page is submitted, the form data is passed to a storedprocedure on our mssql2k server, which performs several operations,all of which are wrapped in a transaction.In particular, the stored procedure performs an update operation on arecord in one table (i'll call it TableA) and an insert into anothertable (TableB).If the procedure encounters a problem (ie after each update / insertoperation in the procedure we test for IF @@Error<>0) it performs arollback, performs a select similar to the one immediately below, andthen RETURNs.SELECT '1' as error, 'Unable to update TableA' as errormsgIf the procedure doesn't fail any of the @@Error tests, thetransaction is committed, and a membership number is SELECTed to bereturned.SELECT '0' as error, @memnum as membershipnumberThe @memnum variable is populated within the transaction.Back in the ASP page we test both for the proc returning an emptyrecordset, or for it passing an explicit value in the error field, andpush the page to an error page if either of these conditions are met.If, on the other hand, none of these conditions are met, and themembershipnumber field in the recordset is populated with a validmembership number, we push to a confirmation page.This confirmation page receives the membership number in a sessionvariable, performs a SELECT against TableB (the table that receivedthe insert during the proc) using that membership number in the WHEREclause, and the resultant recordset is used to populate theconfirmation details on that page. That recordset is also then used topopulate the details of a confirmation email, which is automaticallysent by the confirmation page.And now here's our problem: we've become aware of a handfull of peoplewho have gone through the enrollment process, have received theconfirmation email containing the information they supplied asexpected, but the data appears to be entirely missing from our tables.By that I mean that the record in TableA does not appear to have beenupdated (under normal circumstances that record should have hadseveral flags set, and several other fields updated with informationsupplied by the person enrolling), and the record in TableB does notappear to have been inserted.In essence, looking at our tables, it *feels* like the transaction inthe stored procedure for that particular enrollment hit a problem andwas rolled back. However, the evidence that we have in the form of theconfirmation email argues strongly that the data must have existed inour tables (particularly in TableB), if only for an unknown period oftime.We're kind of at our wit's end to work out what is going wrong withthese enrollments. From my understanding of transactions (and I couldwell be wrong) any changes to data (ie updates, inserts etc) containedwithin are essentially 'invisible' to any other operation (ie theSELECT that happens in the confirmation page) until the transaction iscommitted, implying that the effect of the update and insert shouldhave been 'permanently' successful if no error code is received and ifa valid membership number was returned. I ask, because someone in ourteam has suggested that maybe the operations in the transaction'lasted long enough' in the tables to have been visible for the SELECTon the confirmation page to have worked, but were then subsequentlyrolled back, explaining why the confirmation email is appropriatelypopulated and why the data then appears to be missing. However, as Isaid, this doesn't match my understanding of how transactions behave.Sorry for the length of this post, but I felt it was best to explainthis as best as I could.Does anyone have any advice they can give us on this situation? ie,are there any known problems with operations in transactions 'bleedingover' into tables, but then being rolled back at some later point?Does anyone have any thoughts or suggestions on how we can furtherdiagnose this issue?Truly, any help will be immensely appreciated...Thanks in advance,M Wells
View 2 Replies
View Related
