Simulate Heart Beat Code To Manage Production Servers
Jan 1, 2008
Hi
I am currently developing a DBA management console for a company who have 45 SQL Servers, 20 of which are in the production environment. As part of the development I have created a DBA dashboard with various alerts and information dials regarding the state of the SQL Infrastructure. I came accross a problem yesterday that I cannot find the answer to.
One of the alerts I have developed is a simple "Heart Beat" indicator that displays that the SQL Server is present and "alive". To do this I have a central database running on SQL 2005 which has linked server connections toall 45 SQL Servers. This central database runs a simple select statement on each server (something that I know works if the server is there). The select is run as dynamic SQL as I need to build up the SQL as part of a cursor to place the server name within the from clause. Here is the select I am using: -
select top 1 dbid from [server].master.dbo.sysdatabases
If the server is not there an error occurrs. I trap this and record that the server may not be present. The cursor then moves on to the next server to check.
This works fine when ran from Query Analyser. I can simulate a failed server by deleting the link server connection. For the server in questions an error is raised when the select is run, I store the error and on the Dashboard screen you can see an indicator saying that the server is currently non-contactable (i.e. failed Heart Beat).
My problem comes when I try and schedule this procedure. If I run it as an SQL Agent Job it behaves differently. Here, as soon as the error is detected it bombs out stating that the step has failed. I don't mind it stating that the step has failed, what I want it to do is to complete the cursor loop on all the servers. You see at the top of the procedure I set all the heartbeats flags to 0 (i.e. not contactable) so I need to to complete the run. I have search the Agent set-up and can find no flag to stop it halting processes when an error occurs.
The servers are configured not to allow RPC and I would rather not have to put a job on every server to tell me they exist as this would need managing going forward.
Any help you can offer would be greatly appreciated - Happy New Year by the way!
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May 28, 2004
Hello Techies,
Have one of you tried MAK's script to monitor SQL heartbeat...
I have configured the script as per his article.
http://www.databasejournal.com/features/mssql/article.php/3347241
But...it didn't work and reports errors with the log file...and seems like struck in INFINITE loop. I have attached the log file.
Anyone faced similar issue? How can I get this going?
Thanks,
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Jan 9, 2008
Hi everyone,
I really need your help!! How you manage development server and production server?
My current situation:
Our programmers develop new Stored Procedures on development server. When all testing is completed, we then deploy them to production server.
Challenges:
Programmer (Eric) modified a Stored Procedure (SP_1) on development server. He did not deploy it on production server because SP_1 is not completed yet.
Programmer (John) got request and needed to modify SP_1 on development server
So now there is a problem in SP_1. if John deploy SP_1 on production server, it will overwrite the current version and cause errors.
Anyone can solve this problem? Will it be better if we have another testing server?
many thanks
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Aug 24, 2000
I have to maintain several SQL Server 7 DBs across multiple NT Domains (same network). How do I access the SQL Server on the second domain from enterprise manager?
Thanks!
Lia
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Dec 30, 2007
Hi All
It´s my DropDownList data source from my page1.aspx:
<asp:DropDownList ID="ddlChampionships" runat="server" DataSourceID="sdsSearchChampionships" DataTextField="name" DataValueField="id_championship"> </asp:DropDownList><asp:SqlDataSource ID="sdsSearchChampionships" runat="server" ConnectionString="<%$ ConnectionStrings:LocalSqlServer %>"
ProviderName="System.Data.SqlClient" SelectCommand="SELECT * FROM [Tupi_Campeonatos]"></asp:SqlDataSource>
When I put a new championship name in a TextBox and click on the button "ADD", this button event click is called:
Protected Sub btAddChampionship_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btAddChampionship.Click
insertNewChampionshipIntoDataBase()
End Sub
The Page then reloads but my DropDownList is not updated. The way I found to do it is to put the DDList update code after the calling of the insertNewChampionshipIntoDataBase() method, but how???
thnx
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Jul 31, 2007
we are having 2 prodction servers in our environment.
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is this possible??
if possible , can any one give me a link to document where i can find more info on this, or send me the steps what i need to done for this...
thanks
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Feb 25, 2006
This is driving me nuts: On my development machine the code runs fine
but generates an error on the production server. Both are running SQL
Server 2000 and ASP.NET 1.1
The datatype of the field in question is datetime.
The webform has a calendar for a user to select and automatically
insert the date into the textbox. The update command in the webform is:
cmdInsert.Parameters.Add("@citation_date", CDate(txtDate.Text))
This works without a hitch on my development system, but on the production server it generates the following error:
Cast from string "19-12-1997" to type 'Date' is not valid.
WHY?
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Jul 30, 2015
I am getting following errors when i processed Cube in Production.An error occurred while the dimension, with the ID of 'DIM_PARTICIPANT', Name of 'DIM_PARTICIPANT' was being processed.
End Error
An error occurred while the 'PARTICIPANT NAME' attribute of the 'DIM_PARTICIPANT' dimension from the 'XL_GCS_SelfServices' database was being processed.
End Error
An error occurred while the dimension, with the ID of 'v d Transaction', Name of 'DIM_TRANSACTION' was being processed.
End Error
An error occurred while the 'INVOICE NUMBER' attribute of the 'DIM_TRANSACTION' dimension from the 'XL_GCS_SelfServices' database was being processed.
End Error.
But i implmented same in Dev and QA server, there is no issues found.
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Feb 22, 2005
Hello
I have a production database that i need to refresh to our test environment daily. The database size is 700 MB.
I do not need to transfer the stored procedures and triggers , users and logins.
Would a DTS package that runs every night be the best and the easiest solution to implement or should i look into log shipping and snapshot replication.
thanks
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Jan 14, 2008
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We have had instances where clients are asking for enhancements and modifications to the SSIS package whereby we would develop it in our development environment then replace the existing copy in the clients production environment. There has been instances whereby the packages would work as desired on our end, but it requires further refinement on the clients side. As such, we have had instances where we had to "back-out" into the previous packages.
I am just trying to find out what methods or procedures other people are following to acknowledge situations like this or similar to this. Currently we are following an exhaustive method of having two copies of the code on the client side, the "live" code is never modified, just the secondary copy, then when all is good, we move this code into the "live" code. Does anyone have any means of performing incremental updates on SSIS packages easily?
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Jul 2, 2015
So I'm using the 2012 SSMS to connect to a SQL 2008 database, upon which we have code that audits all SQL logins to production and notifies us via email that someone is using logins they shouldn't. Mostly it's to notify us if people other than the DBAs are using these logins from their desktops instead of using their windows accounts.
This morning I opened up SSMS 2012, logged into my production servers in Object Explorer using Windows Auth. An hour later, I had to update an exception table, so I opened a new query with SQL Auth and used a SQL-only login it. Immediately the email pops that someone on my desktop is using a SQL Login. That's okay. That's expected.
What I didn't expect is that after I closed the query window, the email kept popping. The query window isn't even open / connected to production any more, but SQL still thinks I'm logged in using a SQL Login instead of with Windows Authentication (which is what I used on the Object Explorer connection).
Is there a bug with 2012 that causes a new connection type to affect all current connections? I.E., did it change my DB Windows Auth connection to SQL Auth on the other connection?
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Oct 23, 2007
Hi Folks,
Trying to setup a Third dropdownlist now to feed from the selection of my second dropdownlist which feeds off my first dropdown if that makes sense
Do i need to somehow put in some code to add the first and second dropdownlist values to make the third
How do i add two Dropdownlists values to create the third?
I'm new to all of this so please go easy. Much appreciated.
Thanks,
Sully
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Feb 16, 2005
I like this forum but recently I have noticed they are running ads with sound effects.
I like a lot of programmers I know listen to music through their computer with headphones on all day. Whenever one of those adds fire off it about scares the BeJesus of me and comes through louder than the music. I am playing with my settings but I each time I find one that kills the sound effects it kills the music too.
Starting to make me mad.
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Apr 16, 2005
Hi all...
I'm connected to a network with 3 Servers ( 3 sql servers on 3 different machines )
How can i know the name of the servers using SQL Code?
Thanks
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May 2, 2008
Dear guys
I want to publish my web site and sql server on a hosted server. But i'm worried about people behind the server. all of my codes including web and stored procedures of sql server are open. as far as I know, there is no effective way to protect web pages source. how about sql server? I mean compiling stored procedures.
and another important thing is data. I think certain people have potential to see or change all of my records, or for example give email address of my customers to a third party or ... .
Is there any way?
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Apr 24, 2008
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This is what I want:
Table 1:
Col1 Col2
1 a
1 b
2 c
2 d
2 e
Resultset should be:
Table 2:
Col1 Col2
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How can I simulate 1,000 simultaneous users in my database?
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Dec 17, 2007
I have a merge where the subscriber can do changes to its tables ... But as I found out the changes are made only if publisher simulate an row change or changes something effectively
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Jul 27, 2015
I want to simulate 100 users simultaneously executing a procedure in sql server (best example would be 100 users using one report with different parameters in ssrs at the same time ). can i do that ?
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Jun 5, 2015
I have a table (let's call it MyTable) that consists of four fields:
Id, Source, FirstField, and
SecondField, where Source only takes one of two values:
Source1 and Source2.
The records in this table look as follows:
Id
Source
FirstField
Secondfield
1
Source1
Product 3 name
Product 3 description
[code]...
I need to return, using 3 different T-SQL queries:
1) Products that exist only in Source2 (in red above)
2) Products that exist only in Source1 (in green above)
3) Products that exist both in Source1 and Source2 (in black above)
For 1) so far I've been doing something along the lines of SELECT * FROM MyTable WHERE Source=Source1 AND FirstField NOT IN (SELECT DISTINCT (FirstField) FROM MyTable WHERE Source=Source2)
I have read about INTERSECT and EXCEPT, but I am a little unclear if they could be applied in this case out of the box.
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In my fact table (month granularity), I've got a calculation defined:Â
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Jun 4, 2015
Here's the scenario. I have a table (let's call it MyTable) that consists of four fields: Id, Source, FirstField, and SecondField, where Source only takes one of two values: Source1 and Source2.
The records in this table look as follows:
I need to return, using 3 different T-SQL queries:
1) Products that exist only in Source2 (in red above)
2) Products that exist only in Source1 (in green above)
3) Products that exist both in Source1 and Source2 (in black above)
For 1) so far I've been doing something along the lines of
SELECT * FROM MyTable WHERE Source=Source1 AND FirstField NOT IN (SELECT DISTINCT(FirstField) FROM MyTable WHERE Source=Source2)
Not being a T-SQL expert myself, I'm wondering if this is the right or more efficient way to go. I have read about INTERSECT and EXCEPT, but I am a little unclear if they could be applied in this case out of the box.
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Nov 21, 2007
I have a report that was designed using SQL Reporting Services that sits on a SQL reporting server. It's nothing too exciting, it is essentially a three page application with legal jumbo on pages 2 and 3 and applicant data in fields on page 1.
We use rectangles to force page breaks to page 2 and to page 3.
When running the report on the report server, it shows and prints fine.
When running the report from the QA website internally, it shows and prints just fine.
When running the report from the production website from a machine internally, it shows and prints just fine.
When running the report from outside of the company network, the report is jacked. It obliterates large chunks of text, crams text together, and creates blank pages.
I need help in determining where I even begin with trouble shooting this!
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Aug 21, 2001
can anyone tell me if they know of a way to automate the update process from development servers to live server, with little interference from an administrator
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Funny I know – and I hate the idea btw :(
Any references, contacts, 3rd party tool recommendations welcome,
Thanx,
Darren
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Sep 27, 2007
I am in the middle of a major migraton project, moving from x86 SQL 2000 to IA64 SQL 2005. I have a business need to link to several legacy servers. I have a number of problems I am trying to solve.
1) Linking a Kerberos server to a non-Kerberos server.
2) Linking x64 or IA64 servers to x86 servers.
3) Linking SQL 2005 to SQL 2000.
Two of the errors I am encountering are:
------------------------------
TCP Provider: An existing connection was forcibly closed by the remote host.
Login failed for user '(null)'. Reason: Not associated with a trusted SQL Server connection.
OLE DB provider "SQLNCLI" for linked server "SCDC250DB" returned message "Communication link failure".
(Microsoft SQL Server, Error: 10054)
------------------------------
And
------------------------------
The OLE DB provider "SQLNCLI" for the linked server "SCDC250DB" reported an error. Authentication failed.
Cannot initialize the data source object of OLE DB provider "SQLNCLI" for linked server "SCDC250DB".
OLE DB provider "SQLCLI" for linked server "SCDC250DB" returned message "Invalid authorization specification".
(Microsoft SQL Server, Error: 7399)
If someone has worked through these problems before, I would appreciate it if you could direct me to the relevant documentation to resolve these issues.
Thanks!
Brandon Forest
Database Administrator
Data & Web Services Team
Sutter Connect Information Technologyforesb@sutterhealth.org
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Oct 27, 2006
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Apr 14, 2008
Hello,I am working on an ASP.NET web site using an SQL database. Is there a way to Insert/Delete and Update data in the database without creating all the forms in ASP.NET?Since I am the only person to work with the database it would be easier for me than creating all ASP.NET forms.Thanks,Miguel
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May 28, 2007
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Jun 11, 2004
Before I just manage the SQL serve in LAN.
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Apr 14, 2008
Hello,
I am working on an ASP.NET web site using an SQL database.
Is there a way to Insert/Delete and Update data in the database without creating all the forms in ASP.NET?
Since I am the only person to work with the database it would be easier for me than creating all ASP.NET forms.
Thanks,
Miguel
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Mar 27, 2008
In a previous application i stored about 100.000 actions ( coming from an external system )in an access database for each day. Therefore i created everyday a new accessdatabase to have enough performance. Each month i copied automatically all databases in a new 'month' map as a backup.
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I'm afraid the application will become to slow if i save all actions in one database. ( after 1 month i will have 3.000.000 actions.
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Jul 3, 2006
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