what proactive steps can we take to make our app (ado, stored procs etc) cluster aware, in the event that we someday use clustering? For instance, I read things about retry strategies etc but dont even know if retry is on a different connection or what appears to be the same connection. We already make our trans as small as possible.
View 7 Repliesif an app sits in an environment where both clustering and mirroring are available for HA, are there some simplified best practices, perhaps patterns or .net classes suggested by MS for making the app aware of both clustering and mirroring?
If the mirror db is also contained in the original connection string as a retry partner and SQL failed over automatically, the app wouldnt have a say in first retrying against the cluster. It might prefer cluster first because the mirroring is asynchronous and therefore a bit less up to date than the cluster. This of course assumes the app is ok with the longer failover time. If the partner isnt included, the app needs to be aware of two connection strings.
Is there some feature in SQL for having the best of all worlds, ie one connection string but having a "say" or "rule" in exactly what sql does and doesnt do for you and in what order?
most articles I read suggest that apps need to retry upon failure in a mirrored environment, using a different connection string, not worrying a whole lot about waiting for the retry. But I heard somewhere that the original connection string can also contain info about the mirrored db, thus eliminating the need to use two different connection strings, and perhaps not even needing to retry programatically. Which is correct? I also heard that programatic retry could be required anyway because of some bug involving the "first" failure and disappearance of a connection pool. Can someone just provide the 50,000 foot view of what it takes to make an app "mirror aware"?
View 1 Replies View Relatedone MS forum MVP seemed to be saying that a connection retry strategy is the key to making an app "cluster aware". Another MVP on sql server forums at sqlteam.com seems to be saying that this isnt how one makes an app cluster aware from a sql perspective, eventhough she seems to agree that a 15 second double retry strategy is a good thing. Am I missing what "cluster aware" really means?
View 1 Replies View RelatedOS Windows Server 2012
SQL 2012
I have a software that presents a drive to a 2 node cluster.
Not sure how I would go about presenting this newly presented drive as a Cluster Resource and make SQL depend on this resource.
We have a SQL 2014 AlwaysOn availability group running on two Windows 2012 R2 servers that are in the same subnet. We created a new server in a second subnet, installed SQL, joined the server to the Windows cluster, added a new IP resource for the new cluster, and performed the other remaining steps to add a new AG replica to the SQL instance on this new server. When we try to move the core cluster resources to the new node to test failover, we get an error. Here's the command we've been using:
Move-ClusterGroup "Cluster Group" -Node node3
and it returns the error: The operation failed because either the specified cluster node is not the owner of the group, or the node is not a possible owner of the group...I've checked the ownership of the cluster groups and the cluster resources and it looks like they are set appropriately:
>Get-ClusterGroup | Get-ClusterOwnerNode
Cluster Object Owner Nodes
---------------- ---------------
Available Storage {}
Cluster Group {node1,node2,node3}
SQLAG {node1,node2,node3}
[code]....
We've double-checked that all IP resources are in the right subnets and that the dependencies for the Cluster Name resource and the Listener Name resource are set appropriately. I'm not sure what else to check since the PowerShell commands seem to indicate that node3 is an owner of the appropriate resources. What other things need to be checked or if the ownership being checked isn't the same as what PowerShell is checking?
Hi Guys,
This message is posted to alert everyone.
Be Aware !!!!! (Job seekers)
Convey this message to all of your friends.
Nowadays, a new Bad Virus (Trend) is affecting the IT industry throughout United States in the name of interviews.
It is shame for the Company who do this.
Persons are called for interviews and were asked to solve a problem spending like 3 to 4 hours in the name of testing their ability.
(which they really need solution for the problem they are facing in the company)
This guy who attends the interview shows his talents and solve the major problem within a couple of hours (even faster than they expect)
hoping that he will get a job.
As soon as the problem is solved, the person was told that, " Let we think about that, We will inform you later "
But after that there won't be any calls or feedback from the Company.
So some of the Companies utilitize the skills of the people and get their job done without paying which seems to clever.
So Guys Be Aware !!!!!
-Anu
That targets SQL Server. It deletes all data in random tables, and then truncates the transaction log.
Anyone heard of something like this?
Shaulie
Hi Guys,
This message is posted to alert everyone.
Be Aware !!!!! (Job seekers)
Convey this message to all of your friends.
Nowadays, a new Bad Virus (Trend) is affecting the IT industry throughout United States in the name of interviews.
It is shame for the Company who do this.
Persons are called for interviews and were asked to solve a problem spending like 3 to 4 hours in the name of testing their ability.
(which they really need solution for the problem they are facing in the company)
This guy who attends the interview shows his talents and solve the major problem within a couple of hours (even faster than they expect)
hoping that he will get a job.
As soon as the problem is solved, the person was told that, " Let we think about that, We will inform you later "
But after that there won't be any calls or feedback from the Company.
So some of the Companies utilitize the skills of the people and get their job done without paying which seems to clever.
So Guys Be Aware !!!!!
-Anu
Hi Guys,
This message is posted to alert everyone.
Be Aware !!!!! (Job seekers)
Convey this message to all of your friends.
Nowadays, a new Bad Virus (Trend) is affecting the IT industry throughout United States in the name of interviews.
It is shame for the Company who do this.
Persons are called for interviews and were asked to solve a problem spending like 3 to 4 hours in the name of testing their ability.
(which they really need solution for the problem they are facing in the company)
This guy who attends the interview shows his talents and solve the major problem within a couple of hours (even faster than they expect)
hoping that he will get a job.
As soon as the problem is solved, the person was told that, " Let we think about that, We will inform you later "
But after that there won't be any calls or feedback from the Company.
So some of the Companies utilitize the skills of the people and get their job done without paying which seems to clever.
So Guys Be Aware !!!!!
-Anu
Hi Folks,
I developed my ssis package against my local database and i would like to test it against remote server database.For that i have modified all of my connection manager settings still i am getting error on oledb destination and Execute T-Sql task.The below is the error.
[OLE DB Destination [11665]] Error: An OLE DB error has occurred. Error code: 0x80004005. An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80004005 Description: "The statement has been terminated.". An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80004005 Description: "Violation of PRIMARY KEY constraint 'PK__tblPr__532FC765'. Cannot insert duplicate key in object 'dbo.tblPr'.".
Can anyone suggest me what would be the problem and how to resolve this.
Thanks in Advance.
My goal is be able to compare the total number of rows of a plain file with the total number of rows inserted in a table (with that same file, of course) and then, send an email.
How can I do such thing?
TIA again
Hi, all:My VC6 MFC application is recognized as a Unicode application by the drivermanager, so when I read nchar fileds in MS SQL Server database, theSQL_WCHAR does not convert to SQL_CHAR, and the application ASSERT failureat CRecordset::GetDefaultFieldType function.But I don't have "_UNICODE" defined, and have no "W" suffix functionscalled, and my old version program compiled on Feb 2004 just work fine.(source code lost unfortunatally)I read docs like:http://msdn.microsoft.com/library/d...ver_manager.asphttp://msdn.microsoft.com/library/d...ode_drivers.aspbut can't find the right answer.Could any one tell me how dow the driver manager judge the application to beUnicode aware?Best Regards,Qiang He(remove the "nospam." to email me, thanks)
View 1 Replies View RelatedHi,
I am creating a custom transformation component, and a custom user interface for that component.
In
my custom UI, I want to show the custom properties, and allow users to
edit these properties similar to how the advanced editor shows the
properties.
I know in my UI I need to create a "Property Grid".
In
the properties of this grid, I can select the object I want to display
data for, however, the only objects that appear are the objects that I
have already created within this UI, and not the actual component
object with the custom properties.
How do I go about getting the properties for my transformation component listed in this property grid?
I am writing in C#.
How many "applications" can be loaded onto Microsoft SQL Server 6.5?
Additional Information:
The OS platform is Windows NT Server 4.0 (SP5) on a Compaq ProLiant 1600 (PII 450) with 256Mb RAM
Proposed applications, although this probably will mean little, are Dataview (club membership) Peterborough (payroll) and Positive (HR).
Any assistance would be appreciated.
Thanks
Robert
robert@whiteley.com
Hey guys, my first post so here goes...
I'm wondering if anyone here knows how to write a program (or download a program) that pretends its a sql server and listens for connections, so that when an app thinks its sending its connection string to a server, its sending it to the locally installed program, so that you can get the UID and password from the connection string.
I'm working at a company where we need to write an extension to the software we use but we don't know the login to use for it. These programs are horribly designed. If you run it with the net card disabled it dumps the connection string to the screen but of course it has the UID and pass starred out. Any thoughts?
I'm struggling to connect to my SQL server whilst running a dot net application which is located on a network drive.
the program will run perfectly from my c drive, but as soon as i move the program file on to the network, it no longer recognises my windows permissions, and does not connect to the database.
can someone help?
is there some code that i need to add to my dot net code?
I have SQL Server 2000 with databases on the NetApps filer CIFS share.For example, the datafiles are located at \network shareserversharemicrosoftsqlservermssqldata...Whenever there is a filer failover, some of the databases go in suspectmode. Is there a setting on SQL Server like a time out setting from thenet apps that can be modified so that the databases will wait for awhile before going into the suspect mode?Raziq.*** Sent via Developersdex http://www.developersdex.com ***
View 1 Replies View RelatedHelp!
Does anyone know where can i find some windows or web applications using ssis for manipulations?
If a user's pc needs to run 2 different applications (sold by 2 different vendors) and one must be 6.5 and the other must be 7.0, are there any problems with the client machine?
My understanding is that each of the apps comes with the pieces it needs to connect. I'm trying now to reach the tech types at the vendors and ask what kind of custom setup (if any) is needed on a user workstation or if the install does everything. If they come with their own dlls and odbc data sources, might all be well?
Does anyone have apps loaded on a desktop that connects to both a 6.5 and a 7.0?
Thanx,
Dick Scherrer
Hello,
i am planning to build Pocket Pc App and i would like to know if i can use Sql Mobile as my data store. The data base design is quite complex.
I wont be using any recplication/synchronization in my app since its a standalone app.
pls suggest.
Thanks
Karthik
Hi guys,I've got two apps that are going to have pretty much the same users and i wanted them to have the same ASPNET.MDF user database. Is it possible to store the ASPNET.MDF in a different location and then have the two apps access it from there or alternatively have it in the App_Data folder of one of the apps and then have the second app access it from there?Thanx
View 2 Replies View RelatedHi
My console applications work for SA and no other user. I can run the Stored procedures used in the console application from Query analyser when logged in with username/password that I am attempting to use for console applications. I am using SQL server authenication. User access permissions look ok in Enterprise Manager. Access is permit for my user.
Any suggestions?
Thanks
A few years ago I wrote an active-X server to maintain a singleconnection to a file .mdb from multiple apps on same PC because I washaving to many database curptions.Should I use the same Active-X server for the same in a MS SQL ServerDSN connection or is it ok to have multiple apps from the same pc usingthe DSN?
View 1 Replies View RelatedI have an application that was developed under Visual Basic .NET 2005 Standard that I keep continuously running to monitor and gather data and store that data in a SQL Server Express database. This is all done on a single computer that's not networked to anything. The trouble is, I'd like to look at the data in the database from time to time without shutting down the application, but I'm not able to do so. If I try to copy the database files, named lamination.mdf and lamination.ldf, to another location, I get the following error message;
"Cannot copy lamination: There has been a sharing violation. The source or destination file may be in use."
I would like to be able to copy the file to my office computer where it would be convenient to use Management Studio Express to look at the database tables. I can't even use Management Studio Express on the computer where the application is running, as I get the following message when I try to attach the database:
"CREATE FILE encountered operating system error 32(The process cannot access the file because it is being used by another process.) while attempting to open or create the physical file 'C:Documents and Settings barnardMy DocumentsVisual Studio 2005ProjectsLamination Phase ILamDataBaseLamination.mdf'. (Microsoft SQL Server, Error: 5123)"
Here is the connection string in the VB application:
"Data Source=.SQLEXPRESS;AttachDbFilename="C:Documents and Settings barnardMy DocumentsVisual Studio 2005ProjectsLamination Phase ILamDataBaseLamination.mdf";Integrated Security=True;User Instance=True"
In the VB app, connections to the database are made only every few minutes, and the connections are immediately closed.
Is there anyway I can either copy the database files, or at least look at the database tables with Management Studio Express without stopping the VB application?
Thanks,
Tim
i'm building apps using sql server express and I want to deploy to servers that have the 2.0 .net framework but have sql server 2000 database.
Can this be done, and if so, how?
Observing God€™s Holy Spirit, I see God saying that The Lord Jesus influences every natural occurrence of kindness, righteousness, and judgment (Jeremiah 9:23-24). I believe God, so I thank The Lord Jesus for your grace in these matters.
Is there a way to execute ETL packages programatically? Specifically, is it possible to
manually invoke the ETL package to execute from, say, an ASP.NET
application?
If so, how do you do that?
I've been searching MSDN regarding this but all I see are examples on programatically building packages.
Hi
I installed Sql Server 2000 in my server with windows authentication.
IIS side under security tab checked Windows authentication option.
When i try to my asp.net web application everything is working fine.
But now as per user wish i dont want to use windows authentication.So sql side i create one user called 'global' and giving full permissions .In IIS side unchecked the windows option and checked
Anonymous access and given 'global' user id at anonymous user account place.
Now when i try to run my Web application i can connect to sql servel and fetch the data but no events are running in my .aspx page.means when i click any button or select list or combo box nothing is happening.All events are not firing and also not giving any error message.Its simple showing the page as it is.
When i un checked Anonymous access and checked windows authentication everyting working fine.
Really not getting why its doing like this .
Pl help me in this.
thanks
New to MSSQL
Management is getting frustrated with the increase in number of NT servers for MSSQL and Vendor packages. Currently we purchase a box for each app. We would like to go to one or two MSSQL servers running multiple application database's (based on size etc) . How are you handling this? Do you do this for test only or both test and production? Any gotcha's. Any help will be appreciated.
Thanks
john
We are currently migrating our sequel 6.5 databases to sequel 2005
We have a handful of vb6 apps that connect to the current 6.5 database.
Can anyone recommend the "best practice" for connecting vb6 apps to sequel 2005 databases ?
Thanks in advance.
Hi all,I bet this doesn't exist, but does anyone know of an MS SQL EnterpriseManager-type application for Linux that would give me access to a DTSstored on the server? I'm a web programmer by profession, and most ofmy tools are Linux-based, but because I do so much indepth work in MSSQL and DTS's, I've been dual-booting between Windows and Linux mainlybecause there's no way I know of to access my MS SQL DTS's from Linux.Any Linux solutions out there that will read and maybe even edit SQLDTS's?Thanks,Alex.
View 1 Replies View RelatedI'm planning an SQL 2005 deployment and would like to know if an SQL server should be kept as dedicated as possible. Should apps that access SQL be kept on other servers? What are the do's and don't's along these lines? The plan here is to install everything that accesses SQL on the same server with the database, but this seems like a bad move to me. Am I right?
Thanks!
Gregg