Replication Troubleshooting Tips
Jan 6, 1999
Hi all:
I'm new to replication but I have already set up replication and have seen it
working and failing and have gotten myself out of jams so far but there must
be an easy way to administer it when things don't replicate as expected. I'm
finding that I could easily kill half a day just trying to dig up
information leading to troubleshooting tips. Is there documentation just on
managing this feature. The regular MS Administrator's guide doesn't offer much.
Currently I have a problem that if replication fails on one command I get a
SQL Mail telling me of the problem but does replication continue to the next
command or does it just stop until the problem is fixed? I'm finding that I am
constantly checking the publisher and subscriber databases and verifying if
replication is indeed doing what the msjob_commands table reports. I set the
batch to commit after each transaction instead of every 100.
Help...
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Mar 16, 2006
We have some transactional replication jobs from oracle to mssql2005. I found an error in the replication monitor as below,
============================================
Incorrect syntax near 'index'. If this is intended as a part of a table hint, A WITH keyword and parenthesis are now required. See SQL Server Books Online for proper syntax. (Source: MSSQLServer, Error number: 1018)
Get help: http://help/1018
Command attempted:
if @@trancount > 0 rollback tran
(Transaction sequence number: 0x00000000000000000D4300000000, Command ID: 26290)
============================================
I found the corresponding table from the command id. Since some of the tables in our env. are created with triggers which cause the replication error occasionally! How can I trace the information of the transaction/record which made the replication pending? Also, there may be 'invalid' input in oracle and replicate to mssql2005 which cause error in trigger and made the replication panding. Any way to solve this kind of problem? Thanks in advance
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May 9, 2008
Hi.
Me any my team are soon going to work on a performance critical application. My team has some experience of writing SQL, however we have not done performance oriented coding.
I am looking for a comphrehensive document which lists information for writing good SQL with performance. Please guide if there is such a document or web site.
Thanks,
Prasad
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Feb 25, 2004
Hi
I have sucessfully set up transactional replication, allowing the subscriber to update the publisher. All works well for a while, but after a couple of weeks or so it fails, but always for a different reason !
My question is, is there anything that can be done to help replication stay healthy. I had thought of doing regular backups of the database and the transaction log, and then truncating the transaction log.
Any advice, or links to other troubleshooting resource much appreciated.
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Oct 19, 2007
Hello!
We have setup up transactional replication with dedicated distributor in SQL Server 2005 environment. I have noticed that during particular time of the day latency is increasing dramatically. I have been checking Tracer Tokens and Total latency during that time is around 30-40 min (both publisher to distributor and distributor to subscriber is taking much longer that normal). Normally, it is less than 10 sec. I was wondering if there is a way to pinpoint exact cause of the latency. This is pull subscription.
I would appreciate if someone can share (or point to the right direction) best practice on transactional replication setup/maintenance. My understanding is that only committed transactions are replicated, correct? I checked database on publisher and didn't see any outstanding long running transaction.
Any help is greatly appreciated.
Thanks,
Igor
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Aug 4, 2007
Employee Date Enquired Title Company
Bryan Cole 2007-05-01 Recruiter ABC
Bryan Cole 2007-05-15 Recruiter ABC
Bryan Cole 2007-05-21 Recruiter ABC
Bryan Cole 2007-06-15 Recruiter ABC
Bryan Cole 2007-07-01 Recruiter ABC
Bryan Cole 2007-07-30 Recruiter ABC
I have to do row by row date comparisons in a date column. If the date difference is more than 30 days we keep it , otherwise we suppress it. How can we write the query without using cursor so that only the bold rows will come ?
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Nov 7, 2000
What is it mean GHOST in SQL Trace column ?
Thanx in advance.
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Jun 13, 2008
Hi Gurus ..
Could any one create a thread called Tips for the Day and Give any imports and complex query to learn on each and every Day ?
Thanks in Advance
Dana
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Dec 20, 2006
Dear all,I'm designing a system including the database and the securityrepresents the most crucial aspect of the system; hence for thedatabase security i have implemented the following aspects and needyour advise on further aspects or perhaps corrections where by thesystem is web based using asp.net and under iis 6.0 with https; in theasp.net engine side, i have included client-side validations for whatever is inputed and validated against sql injections for postbackforms:The features of security in SQL Server 2005 side i have implemented:1.) Created MACHINEASPNET Account2.) Allowed ASPNET Account to access the DB3.) Explicity denied ASPNET Account all permissions to all tables,functions and views4.) Denied all permissions to the ASPNET user for stored proceduresexcept EXECUTE permissions5.) By Stored procedure creation, WITH ENCRYPTION, EXECUTE AS'MACHINEASPNET' was usedNo SQL was included in the asp.net code except for calling storedproccedures; the policy is to only call stored procedures within theasp.net pages and encrypt the connection strings inside the web.configfile.Kindly, give me some guidelines for better security or discuss with methe security aspects i mentionedRegards
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Feb 29, 2008
hi,
pls help me ,i am going to attend the interview for SQL DBA pls give me a some tips.
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Oct 11, 2001
Hi list,
I'd be grateful for a little advice. Running into some problems and not sure where to start. I've looked through some books and articles and Online Help but need some insight into the issue from a person.
I'm running a SQL2K server with about 30 databases, none of them over 20M in size. These db's are driving websites on servers in the same server room and also accessed remotely using Enterprise Manager. For 95% of the time these databases are performing well. Then connections on webpages start timing out. This is a problem that 'fixes' itself very quickly but I need to identify what's causing the problems. I have sa access to the server and am trying to find a way, via perfomance monitoring or enterprise manager, to work out which database, if any, is responsible for this behaviour. There are no blocks visible in Current Activity on Enterprise Manager, I'm getting average LockRequest/sec of about 2000 bit with peaks up to 31000. Processor time is averaging out at about 10%, not too scary.
I can find lots of information on optimising individual databases and queries within them but no too much on identifying processes or queries that might be hitting a whole server installation in this fashion.
Any advice most welcome.
Jo
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Feb 28, 2008
Hello,
I have tables/columns exist.How to encrypt database or mask columns if I have to send a copy of DB to microsoft to troubleshoot for a problem.
Thanks.
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Jul 13, 2007
I need help. I have a SSIS package that connects to a ODBC database, it then does ETL from that database into a SQL 2005 database. I run the package using a Sql Agent job each night. However the package fails randomly with no apparent reason. I have setup logging and after viewing the logs I am no closer to solving the problem. Any Ideas how I can track this down? Thanks.
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Sep 24, 2007
This error is triggered by the following code. How do I figure out why?
It works fine on an old server running win2000 but blows up on win2003
Microsoft VBScript runtime error '800a01a8'
Object required: 'Param1.value'
/mmd/_ScriptLibrary/getcons.asp, line 19
set conn = session("conn")
' Response.write(pg);
set cmdStoredProc = Server.CreateObject("ADODB.Command")
set cmdStoredProc.ActiveConnection = conn
cmdStoredProc.CommandText = "sa.mmd.getConsultantList"
cmdStoredProc.CommandType = adCmdStoredProc
set Param1 = cmdStoredProc.CreateParameter("conam",adVarChar,adParamInput,3)
cmdStoredProc.Parameters.Append Param1
Param1.value = request.querystring("q")
Param1.size = Param1.value.length
set rs = cmdStoredProc.Execute
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Mar 22, 2004
Somebody can give some tips or hints for speed up my querys and procedures from sql and get more performance, what is best to use, joins o cursors, using cursors can give me more performance?
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Sep 4, 2007
Hi,
For your day-to-day SQL Server issues like query tuning, optimization, TSQL problems, I am writing the blog called
http://blog.namwarrizvi.com
Some of the latest articles are:
Generating 1 million rows in less than a second
Conditionally add column in the table
Multiple Inserts in one statement
Capture every data operation in SQL Server 2008
100 Nano seconds precision in SQL Server 2008
Represent Trees and Graphs in TSQL
MERGE Statement of SQL Seerver 2008
Return Last n Orders by using APPLY operator
Number padding in TSQL
Microsoft Performance Point Server and Sharepoint
Caching and Recompilation in SQL Server 2005
and many more....
I will really appreciate comments and suggestions.
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Nov 26, 2007
Hello,
We come accross situations where people are running big updates on the database (i.e. 50.000 updates).
Our problem is that those big updates are blocking other user updates.
Thanks to snapshot isolation, users can query (select) the database with no lock.
We rebuilt the indexes setting that the indexes used by the update procedure would not use page locks and only row locks.
We set that the database would update the statistics asynchronously.
Now we are still facing blockings and we would like to optimize the database to avoid those blockings.
What else could we check? Any tips regarding the way to avoid that problem is really welcome.
Thanks,
Olivier
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Jul 23, 2005
Hello I have 2 sql servers in my company and many remote sites. I amtrying to figure out the best way to keep them safe, since both haveaccess to the internet behind the firewall. I was planning to disbablethe default gateway on one or maybe disabling file sharing on both, iwas also thinking to block access to the the terminal server that isrunning in admin mode, either through the firewall or the permissionsof the rdp protocol. I have a few admins that have account manager andserver operator permission as well as exchange admin. Any ideas in howto restrict access to my servers? thanks.
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Oct 19, 2007
Hello guys, i am new to sql so forgive me if dont see something in the code that i should. Anyway the code below comes from the sql script that belongs to "BPBlog asp blogging software" ...its not mine.
Whenever i run this code in query analyzer from sql server 2000 i get an error that says :
Server: Msg 170, Level 15, State 1, Line 16
Line 16: Incorrect syntax near '('.
*line 16 is the below line in the code.
i have been going through books online since last night to try to get an understanding of the syntax of all those keywords that sorround the error but still havent figured it out yet. any advise on the error would be sincerely appreciated.
Thanx,
USE [Blog]
GO
/****** Object: Table [dbo].[tblAuthor] Script Date: 11/07/2006 10:51:16 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[tblAuthor](
[fldAuthorID] [int] IDENTITY(1,1) NOT NULL,
[fldAuthorUsername] [nvarchar](100) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[fldAuthorRealName] [nvarchar](100) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[fldAuthorEmail] [nvarchar](100) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[fldAuthorWebsite] [nvarchar](100) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[fldAuthorBlurb] [ntext] COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[fldAuthorPassword] [nvarchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[Approved] [smallint] NULL DEFAULT ((0)),
[fldAdmin] [smallint] NULL DEFAULT ((0)),
CONSTRAINT [aaaaatblAuthor_PK] PRIMARY KEY NONCLUSTERED
(
[fldAuthorID] ASC
)
WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
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Apr 21, 2006
Lock:Deadlock Chain
Exchange
1
16325
2006-04-21 09:20:18.560
Parallel query worker thread was involved in a deadlock
0
Is the process I am running deadlocking with Exchange Server?
The data above is from Profiler.
Thanks
Lystra
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Aug 29, 2007
Does anyone have any good places where I can get some practice scenarios for DBA activity? Also any transact sql puzzles to solve for practice purposes. I want to get as much "real world" activity under my belt as possible in a quick time-frame.
Thanks.
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Jul 23, 2005
Hi, we just started receiving the following error messages about 3weeks ago. We don't get them all the time, or even on the same pagesnecessarily, but we get them from time to time and our sql serverconnection is slower in the last three weeks also. Our database isremotely hosted, and the programmers are also offsite, so we are tryingto deal with this issue with our database server host, with noknowledge of sql server. They say nothing has changed on the server,but we haven't changed any of our front end files either, so we don'tknow what the problem is. Here's 3 of the most common errors:1. Microsoft Cursor Engine error '80004005'Data provider or other service returned an E_FAIL status..../subview.asp, line 1322. Microsoft OLE DB Provider for SQL Server error '80004005'TDS buffer length too large.../subview.asp, line 283. Microsoft OLE DB Provider for SQL Server error '80004005'Unknown token received from SQL Server.../members.asp, line 182We have *no idea* what the above error messages refer to, or whetherthis is something wrong with the server or the ASP pages mentioned. Anyhelp anyone could provide so we can understand the types of messages weare getting would be nice.Regards,Sage
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Jul 23, 2005
Can anyone help me troubleshoot this failed job. The error message in eventviewer is:SQL Server Scheduled Job 'Job1' (0xB1D83B7357CF2B4C808AD1CFA34CE8F9) -Status: Failed - Invoked on: 2005-05-12 09:31:38 - Message: The job failed.The Job was invoked by User sa. The last step to run was step 1 (Job1).The job step is:EXEC proc1I can execute the procedure in QA.Proc1 does the following:INSERT values into a table in the database where the job is running fromSELECT records from a seperate database on seperate serverI'm using four part naming in the select against a linked server. I suspectthat the issue is the security between the different servers/databases but Idon't know where to get more information about the failed job or what to trynext.thanks
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Jul 20, 2005
Hi,This is the first time I use SOAP. Dont really know the exact pictureyet. Hope you can shed some lights on me.May I know where should I start troubleshooting if I get the followinerror message when running SOAP on Windows 2003, SQL Server 2000 ?Error Code: 0 Error Source= Microsoft VBScript runtime error ErrorDescription: ActiveX component can't create object:'MSSOAP.SOAPClient' Error on Line 1. The step failed.Thanks.
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Jun 9, 2008
Hi everybody,
i would be thankful if anybody posts some references of the web sites
which relates to SQL Server Performance tuning.
Thanks in Advance
Suresh Kumar Goudampally
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Aug 27, 2004
I've created a few indexes on my tables but before I over-do it I wanted to see if there were any good websites out there with recommendations. My plan is to create clustered indexes on my primary keys and non-clustered for each foreign key. Also there are a few fields that are regularly searched so I will index them separately as well.
I don't want too many though because I know that affects the performance of record inserts. I'm also not sure about using multiple keys in one index.
Is there a good site out there with tips on what indexes to create or avoid, or have I pretty much covered it?
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Jan 6, 2004
Hello everyone!
I've got a problem with a real slow query, I would be very happy if somebody has any idea to improve the speed of it...
The idea is to get the top 2 products, a customer hasn't bought wich are in his interest...
query (simplificated)
-------------------------------------------------
SELECT TOP 2 prodID, Title, Price FROM bestSold7Days WHERE
prodID NOT IN (SELECT prodID FROM orders INNER JOIN orderProducts ON orders.orderID = orderProducts.orderID WHERE (orders.custID=394))
AND
(prodType = COALESCE((SELECT TOP 1 products.prodID FROM orders INNER JOIN orderProducts ON order.orderID = orderProducts.orderID INNER JOIN products ON orderProducts.prodID = products.prodID WHERE (orders.custID=394) GROUP BY products.prodType ORDER BY SUM(orderProducts.PCS) DESC), 2))
-------------------------------------------------
end query
(COALESCE is for replacing if the customer hasnt ordered anything, or hasnt ordered anything of this type)...
Thanks for any time spent!
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Apr 1, 2004
please post your idea, experiences what is fastest way to maniulate ms sql server using vb6 .
thanks...
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Jun 6, 2014
Are there any best practices for indexing to support queries with MIN() and MAX() in them? what if MIN() and MAX() are partitioned? Super bonus question: what if MIN() and MAX() are not only partitioned, but are called on a field in a derived table, and one of the partitioning elements comes from a table that's being joined in the derived table?
I experimented with inserting the derived table into a temp table, putting a POC index on that, and querying out, but that actually took longer.
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Dec 1, 2005
We are coming out of the dark ages with our app using SQL 7 and, following the excellent advice of the folks here on SQLTeam, installing SQL 2005 Express on our new webserver.
Not being terribly fluent in all things SQL, I was wondering if anybody could provide input on the best practices for getting SQL 2005 Express going on the new server.
So far I've:
- Installed SQL 2005 Express
- Downloaded and "installed" the SSEUtil for CMD line instructions
- Downloaded and installed the graphical management interface (very nice, makes me feel more comfortable - like SQL 7 console!)
- Copied backup files (made using SQL backup maintenance) to the new server
Should I simply create an empty db of the same name on the 2005 server and then restore the 7 data? Or ????
I searched briefly for previous posts of this nature and didn't find too much info so I hope I'm not duplicating effort here...
Thanks in advance for any advice!
Mmmmmkay. Yeah, did you get the memo about the TPS reports?
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Oct 9, 2007
I need to convert an excel matrix into a table. Currently, the data consists of months going across the top and business names going down the left side. Each business name has three rows of data per monthly column, such that there are three numbers in the january column, three in the february column, etc. etc.
I want to convert to a table that has five columns, the business name, date, and the three data columns.
Any help would be greatly appreciated. As of right now I'm staring at keying in about 2000 rows of data by hand.
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Mar 8, 2007
Our parts table has 5k records. I want to use part number as a parameter for one of my reports. Is there a way to do this and have the report generate in a reasonable amount of time?
Thanks
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