Accessing Mirrored DBs On SQL2k5 (x86) From SQL2k
Sep 14, 2007
Hi
I'm trying to select data from a mirrored database situated on a SQL2k5 server, via a linked server on SQL2k.
I can select the data fine using SQLOLEDB but it's not aware of the mirroring so if the DB fails-over it errors.
To get around this, I installed SQLNCLI.msi to install the SQL2k5 provider and created a linked server like this:
exec sp_addlinkedserver @server=N'TEST2',@srvproduct=N'SQLNCLI',@provider=N'SQLNCLI',@provstr=N'Server=server1;failover partner=server2;'
exec master.dbo.sp_addlinkedsrvlogin @rmtsrvname=N'TEST2',@useself=N'False',@locallogin=NULL,@rmtuser=N'user',@rmtpassword='password'
Executing the statement: select * from test2.database.dbo.table
gives the following error:
Server: Msg 7356, Level 16, State 1, Line 1
OLE DB provider 'SQLNCLI' supplied inconsistent metadata for a column. Metadata information was changed at execution time.
OLE DB error trace [Non-interface error: Column 'IsActive' (compile-time ordinal 2) of object '"database"."dbo"."table"' was reported to have changed. The exact nature of the change is unknown].
If i change the statement to
select * from openquery(test2,'select * from database.dbo.table')
It works. I don't really want to have to go and refactor all the SQL though!
I've seen similar posts related to Oracle and SQL2k5 64bit but they don't seem to be relevant to this situation.
Here's the version info:
2000 server (SP3):
Microsoft SQL Server 2000 - 8.00.760 (Intel X86) Dec 17 2002 14:22:05 Copyright (c) 1988-2003 Microsoft Corporation Enterprise Edition on Windows NT 5.2 (Build 3790: Service Pack 2)
2005 mirrored servers (SP2 3054):
Microsoft SQL Server 2005 - 9.00.3054.00 (Intel X86) Mar 23 2007 16:28:52 Copyright (c) 1988-2005 Microsoft Corporation Standard Edition on Windows NT 5.2 (Build 3790: Service Pack 1)
I've also tried applying the following to the 2005 servers: sp2(3159) sp2(3161) but makes no difference.
Any ideas?
TIA
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Hi,
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Hi, I have a task in hand to migrate (upgrade) from SQL2K named instance to SQL2K5 default instance. There are many intranet applications touching current SQL2K. I would like to perform this upgrade such that I don't have to touch any application code - meaning I don't have to change the connectionstring to point to new Default instance. How can I achieve this?
So, in otherwords, here is what I want to achieve:
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If I have both default, I could achive this by setting up DNS alias after migration done so that any call for SERVER_A would point to SERVER_B. But in my case, I don't have SERVER_A, I have named instance. Is there any solution?
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Jan 2, 2008
Hi there!
I use different udls for a website which is partly asp pages and partly aspx pages.
Every database is mirrored, so each udl indicates a "failover partner". However we decided recently that one of the database would not be mirrored anymore. For this database we still use in the udl a "failover partner" to redirect the connection to the second database in case of a failover. For the asp pages the failover works fine even if the database is not mirrored, but it doesn't work for the aspx pages.
It would be great if anyone had an idea why the behaviour is not the same for the aspx pages, and if we can still use a "failover partner" in udls even if the database is not mirrored.. if not, what should we use to connect to another database?
Any help is welcome!
idel
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Jan 30, 2006
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Web.config configuration string is using "ServerA".
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Server A and Server B aren't in a cluster - and I understand a cluster's virtual server would be referenced in the connection string. Is there a way to make the web app automatically switch to Server B (without a cluster configuration)?
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Hi,
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Sep 24, 2006
The following problem occurs when trying to mirror multiple databases using SQL Server 2005:
After mirroring about 40 databases, an error occurred concerning a lack memory availability on the mirror-server.
I added the parameter /3GB to the boot.ini file and enlarged virtual memory space.
Now I was able to mirror a total of 59 databases. When trying to add the 60th database on the principal server, it won't get through.
I don't get any error message, neither the mirror starts.
However the SQL Server Management Studio on the mirror-server doesn€™t seem to respond to any commands given until the mirror is again removed for one or more databases on the principal server.
Adding the parameter /PAE to the boot.ini file, or enlarging the virtual memory again didn't bring the solution.
Both principal- and mirror-server are dual processor servers.
The principal is a Windows 2003 Server Standard x64 Edition service Pack 1 and runs:
SQL SERVER 2005:
Microsoft SQL Server Management Studio 9.00.2047.00
Microsoft Analysis Services Client Tools 2005.090.2047.00
Microsoft Data Access Components (MDAC) 2000.086.1830.00 (srv03_sp1_rtm.050324-1447)
Microsoft MSXML 2.6 3.0 5.0 6.0
Microsoft Internet Explorer 6.0.3790.1830
Microsoft .NET Framework 2.0.50727.42
Operating System 5.2.3790
It has 4GB of memory.
The mirror is a 32-bit Windows 2003 Server Enterprise service Pack 1 and runs:
SQL SERVER 2005:
Microsoft SQL Server Management Studio 9.00.2047.00
Microsoft Analysis Services Client Tools 2005.090.2047.00
Microsoft Data Access Components (MDAC) 2000.086.1830.00 (srv03_sp1_rtm.050324-1447)
Microsoft MSXML 2.6 3.0 4.0 5.0 6.0
Microsoft Internet Explorer 6.0.3790.1830
Microsoft .NET Framework 2.0.50727.42
Operating System 5.2.3790
It has 2GB of memory.
Is there a work-around for this problem?
Thanks for any help in advance.
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Aug 24, 2006
I did setup a Mirrored Database. Connecting from it using ADO.NET works well. It goes to the Mirror if the Principal fails.
But ADODB does not work. I get the error following error:
80004005 Invalid connection string attribute
When trying to connect to the DB in case the principal failed and the mirror is active. (MyProductiveDB is in failover state)
What do I do wrong?
Here is the code:
ADOConn = New ADODB.Connection
ADOConn.Open(CS)
CS is my Connections-String:
"Provider=SQLNCLI.1;Data Source=MyProductiveDB;Failover Partner=MyMirror;Initial Catalog=MyCat;Persist Security Info=True;User ID=MyUser;Password=xxxxxx;Pooling=True;Connect Timeout=5;Application Name=MyApplic"
Remark: When I try to add "Network Library=dbmssocn" to the connection String, I get the same error, even if the Principal is active.
Your help is very much appreciated.
Beat
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Hello,
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my concerne is regarding the Log file size.
I'm running the following steps:
BACKUP DATABASE [DBName] TO DISK = N'Backup_File' WITH NOFORMAT, INIT, SKIP, NOREWIND, NOUNLOAD, STATS = 10
then
BACKUP LOG [DBName] TO DISK = N'Backup_File' WITH NOFORMAT, NOINIT, SKIP, NOREWIND, NOUNLOAD, STATS = 10
if I try to run a SHRINKFILE (DBName_log, 20)
I receive the following info:
Cannot shrink log file 2 (DBName_log) because all logical log files are in use
I'n a bit tense using a
BACKUP LOG [DBName] WITH TRUNCATE_ONLY
as it's part of a mirroring.
but I need to reduce the size of the log file.
thank four your suggestions
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------------------------
I think, therefore I am - Rene Descartes
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Today, I became an involuntary DBA until my company finds someone else. We have an SQL R2 DB that is mirrored that failed dur to the transaction log growing and filling up the disk. As a band aid remedy, I was able to add 20GB to the disk (it is a VM) and then I backed up the Transaction log and did select log_reuse_wait_desc from sys.databases where name = 'mydb' and the result showed that the backup was successful (NOTHING, I think was the result).
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I'm having a problem with SQL2005 Database mirroring.
I have an ASP application that loops for a certain amount of interations and in each iteration I create a SQL Connection object and use the failover partner in the connection string. The object then writes a simple record and then the connection is closed and the process starts again.
About half way through my loop I force a failover to the server mentioned as the failover partner in the connection string. At this point my application encounters a SQL Exception error and the application fails.
I read in this article, http://msdn2.microsoft.com/en-us/library/ms366199.aspx, that this is expected and that you shoud request a new connection using the same connection string but this isn't working for me and unfortunately no examples are given anywhere.
I would appreciate any help. Thanks
Luis Bonilla
Here is a sample of my code:
Dim k As Integer = 1
Dim constring As String = "Server=SVR01.XXX.XXX.comInstanceName;Failover Partner=SVR02.XXX.XXX.comInstanceName;" _
& "Database=test;" _
& "Integrated Security=SSPI;"
Do Until k = 60
Using con As New SqlConnection(constring)
Dim cmd As New SqlCommand()
Try
con.Open() '<--------This is where the exception occurs
Catch ex As SqlException
Dim en As String = ex.ErrorCode
Dim em As String = ex.Message
Dim emm As String = ex.Number
Dim enn As Integer = ex.State
End Try
lblprimary.Text = "Current Primary Database = " & con.DataSource
cmd.Connection = con
cmd.CommandText = "INSERT INTO SystemsTest (FirstName, LastName)VALUES ('SQLWriter" & CStr(k) & "','" & con.DataSource & "')"
Try
cmd.ExecuteNonQuery()
Catch
lblresult.Text = "Results = Error with record number " & CStr(k)
End Try
con.Close()
cont:
End Using
Sleep(1000) 'For testing
k = k + 1 'For testing
Loop
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Aug 8, 2007
Simple question, I hope. I need to add a column to a table of a database that is mirrored. How do I have to do that? Do I need to stop mirroring? Is it sufficient to simply pause mirroring? If I make the change on the principal db, what do I need to do the make the same change on the mirror?
Thanks,
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Hi,
I want to know that how is it possible to achieve mirroring for the service broker queues in the database?
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Hello all,
We are planning to change the location of the log files from my production server. We have setup the mirroring also for those databases. I know for the databases without mirroring job i could detach the database, copy the log file to the target location and attach the database with the new logfile location. But for the mirroring databases I don't have any idea how to do that. Could some body guide me thorugh the process on how to do this task? thank you very much for all your help!
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