Cannot Implement Mirroring
Apr 1, 2008
Hi,
I have place an question, but in some other place in the same forum.
My apologies for that
I wanted to implement mirroring
I hereby let u know the steps
1. Created a database in Principal server named Mirror1 and one table named tblMirror1.( no values inside the table)
2. Repeated the same in Mirror in Witness
3. Selected the Principal server's database -->right click-->tasks-->mirror
4. from the left hand panel selected Options -->recovery model-->full
5. selected Mirroring from left hand panel-->configure secuirty-->entered mirror and witness name--Success
6. When I click on start mirroring I have an error stating
" Alter failed for database mirror1"
"Database mirroring cannot be enabled because Mirror1 database may have bulk logged changes that have not been backed up etc...."
7. followed this one
BACKUP database mirror1 TO DISK='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBackupmirror1_FULL.BAK'
got the answer as
Processed 160 pages for database 'mirror1', file 'Mirror1' on file 2.
Processed 1 pages for database 'mirror1', file 'Mirror1_log' on file 2.
BACKUP DATABASE successfully processed 161 pages in 0.318 seconds (4.147 MB/sec).
According to sources
Run a restore of this backup on your mirror.
This can be done through the GUI or using a T-SQL command.
The database restore must use the NO RECOVERY option, so the database stays in a loading state.
Also the database name on the mirror must be the exact same name as the principal
RESTORE TestMirror FROM DISK='C:Backup TestMirror_FULL.BAK' WITH NORECOVERY
Hence did the below
RESTORE database mirror1 FROM DISK='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBackupmirror1_FULL.BAK' WITH NORECOVERY
ERROR
Msg 3201, Level 16, State 2, Line 1
Cannot open backup device 'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBackupmirror1_FULL.BAK'. Operating system error 2(The system cannot find the file specified.).
Msg 3013, Level 16, State 1, Line 1
RESTORE DATABASE is terminating abnormally.
HENCE MODIFIED AS
use master
go
RESTORE database mirror1 FROM DISK='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBackupmirror1_FULL.BAK' WITH NORECOVERY
Msg 3201, Level 16, State 2, Line 1
Cannot open backup device 'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBackupmirror1_FULL.BAK'. Operating system error 2(The system cannot find the file specified.).
Msg 3013, Level 16, State 1, Line 1
RESTORE DATABASE is terminating abnormally.
Please let me know what shuld i modify
regards
cmrhema
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Aug 28, 2006
i have two computers with Sql server 2000 std edition(SP4) and windows 2003 std edition(SP1).
how should i do to balance the loading of sql server and sync these two servers?
The sql server mirroring means that if one server is down, then the other one will replace it?
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Dec 28, 2007
Hi Guyz
it is taken from SQL2K5 SP2 readme.txt. Anyone have idea what to do to implement this ?
Our sp2 is failing. we suspect the above problem and researching it.we are running on default instance of SQL2K5 on win2003 ent sp2
"When you apply SP2, Setup upgrades system databases. If you have implemented restrictions on the ALTER DATABASE syntax, this upgrade may fail. Restrictions to ALTER DATABASE may include the following:
Explicitly denying the ALTER DATABASE statement.
A data definition language (DDL) trigger on ALTER DATABASE that rolls back the transaction containing the ALTER DATABASE statement.
If you have restrictions on ALTER DATABASE, and Setup fails to upgrade system databases to SP2, you must disable these restrictions and then re-run Setup."
thanks in advance.
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May 3, 2008
Server A = primary SQL DBs (mirroring origination)
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Hi all,
I've been using a piece of transact code to generate random strings of characters in a lot of scripts and I wanted to wrap it up all nice and neat into a function. I came up with the script below.
However, this fails with the following error..
quote:Invalid use of 'rand' within a function.
I've allready tried using dynamic sql and sp_executesql inside the function hoping that a new scope would let me use rand() but that isn't allowed either.
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Charlie.
-- snip ----
CREATE FUNCTION dbo.randstr (
@lengthINT)
RETURNS VARCHAR
AS BEGIN
DECLARE @outputVARCHAR(8000)
DECLARE @allowedVARCHAR(8000)
SET @allowed = '234679abcdefghjkmnpqrstuvwxyz234679ACDEFGHIJKLMNPQRTUVWXYZ'
SET NOCOUNT ON
DECLARE @charmapTABLE (charpos INT IDENTITY (1,1), symbol CHAR)
DECLARE @counterINT
DECLARE @characterINT
DECLARE @maplengthINT
SET @maplength = LEN(@allowed)
SET @character = 0
SET @output = ''
-- Insert the allowed characters into the character map table
SET @counter = 1
WHILE (@counter < @maplength + 1) BEGIN
INSERT INTO @charmap SELECT SUBSTRING(@allowed,@counter,1)
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END
-- Start the loop to generate @output
SET @counter = 1
WHILE (@counter < @length + 1) BEGIN
-- RAND() should output a floating point number between 0 and 1 however...
-- Sometimes the rand() function spits out a number greater than 1
-- or the multiplication results in 0
WHILE (@character < 1) OR (@character > @maplength) BEGIN
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END
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SET @output = @output + (SELECT symbol FROM @charmap WHERE charpos = @character)
-- Increment and Reset the @character variable
SET @counter = @counter + 1
SET @character = 0
END
RETURN @output
END
-- end snip ---
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Please
regards
cmrhema
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Hi,
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using (SqlCommand oCommand =
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{
try { oConn.Open(); }
catch(Exception ex)
{
p_nErrorCode =
10;
p_sErrorMessage = "Error opening database connection during
RCEmployee.DBUpdate: " + ex.Message;
goto Failed;
}
oCommand.Parameters["@employeeid"].Value = p_gID;
oCommand.Parameters["@authorityid"].Value = p_gAuthorityID;
oCommand.Parameters["@role"].Value=sNewRole;
if (!ProcessNonQuery(oCommand,
sMethodName)) goto Failed;
Failed:
if (ErrorCode > 0) bReturn =
false;
oConn.Close();
}
}
return bReturn;
p_gID, p_gAuthorityID is of type guid.
sNewRole is of type string.
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Code:
ID ParentID Name
----------------------
1 <NULL> Test
2 1 Test Child 1
3 <NULL> Test 2
4 1 Test Child 2
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I would like the sorted to look like:
Code:
ID ParentID Name
----------------------
1 <NULL> Test
2 1 Test Child 1
4 1 Test Child 2
3 <NULL> Test 2
5 3 Test 2 Child 1
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exec fin_ods..trun_sp
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I modified the following code from the samples that were available in Help and MSDN. When my application reaches the ExecuteNonQuery statement it informs me that the Byte Array oDocument must implement IConvertible. I have even tried the extended version which uses a SQL Insert followed by UPDATETEXT with Pointers, and I get the same result with the Byte Array used in that example. My goal is to have Users Append certain documents to Proposals within my database, as I understand that is what I would be doing anyway if I used SharePoint.
Following the examples I have not trouble whatsoever reading an Image File from SQL Server 2000, and therefore I expect no trouble with nText Fields. I just cannot seem to insert Documents or Images via VB Code.
What is wrong with the examples that I cannot use the same code?
---- VB Code Follows ----
Private Sub btnSelectFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSelectFile.Click
Dim oSQLConnection As System.Data.SqlClient.SqlConnection
Dim oSQLCommand As System.Data.SqlClient.SqlCommand
Dim oSQLDataReader As System.Data.SqlClient.SqlDataReader
Dim oDocument() As Byte
Try
'Define the Initial Directory to be the "My Documents" Directory.
ofdAttachment.InitialDirectory = "My Documents"
'Filter for File of Word, PDF, and Text. This will suffice for now.
ofdAttachment.Filter = "Word Documents (*.doc)|*.doc|PDFs (*.pdf)|*.pdf|Text Files (*.txt)|*.txt"
'Show the Dialog to Open a File.
ofdAttachment.ShowDialog()
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If ofdAttachment.FileName <> String.Empty Then
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oDocument = GetDocumentInBytes(ofdAttachment.FileName)
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oSQLConnection.Open()
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oSQLCommand = New System.Data.SqlClient.SqlCommand
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oSQLCommand.Connection = oSQLConnection
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'Execut the SQL Statement. Resulting in an Error that states:
'Object must implement IConvertible.
oSQLCommand.ExecuteNonQuery()
If Not oSQLCommand Is Nothing Then
oSQLCommand.Dispose()
oSQLCommand = Nothing
End If
If Not oSQLConnection Is Nothing Then
oSQLConnection.Close()
oSQLConnection = Nothing
End If
End If
Catch sqlex As System.Data.SqlClient.SqlException
MsgBox(sqlex.Message)
Catch ex As Exception
MsgBox(ex.Message)
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End Sub
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Dim ofsDocumentReader As System.IO.FileStream = New System.IO.FileStream(strFilePath, System.IO.FileMode.Open, System.IO.FileAccess.Read)
Dim obrDocumentReader As System.IO.BinaryReader = New System.IO.BinaryReader(ofsDocumentReader)
Dim oDocument() As Byte
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obrDocumentReader.Close()
ofsDocumentReader.Close()
Return oDocument
Catch ex As Exception
MsgBox(ex.Message)
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End Function
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Best regards,
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In other words, is there something opposite to "Multicast"?
I looked at Union and Merge - but it looks like it's not for this kind of things.
Thanks.
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Hi,
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To be more clear I have List table which has below format
TABLE NAME
CUSTOMER
PRODUCT
INVENTORY
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i try to do a simple insert using SQLDataSource and a Stored Procedure
I try all night and always have this error
Object Must Implement IConvertible
I can’t understand where I wrong..
Looking around I understand is maybe a typecasting problema but I not find nothing more understeable..
Could someone tell me why Microsoft release this SQLdatasorce making more difficult a simple insert?
If someone could help me to fix this problem please
Here is the code
------------------------------------------------------------------------------------------------------------
Protected Sub btnSave_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSave.Click
Try
SqlDataSource1.Insert()
Catch ex As Exception
Response.Write(ex.ToString)
Finally
SqlDataSource1.Dispose()
End Try
End Sub
------------------------------------------------------------------------------------------------------------
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:CommerceTemplate %>"
InsertCommandType="StoredProcedure" InsertCommand="dbo.StoredProcedure1">
<InsertParameters>
<asp:ControlParameter ControlID="DropDownListCategory" Name="@CategoryID" PropertyName="SelectedValue"
Type="Int32" />
<asp:ControlParameter ControlID="DropDownListCategory" Name="@ModelNumber" PropertyName="SelectedValue"
Type="String" />
<asp:ControlParameter ControlID="txtModelName" Name="@ModelName" PropertyName="Text"
Type="String" />
<asp:ControlParameter ControlID="txtProductImage" Name="@ProductImage" PropertyName="Text"
Type="String" />
<asp:ControlParameter ControlID="txtUnitCost" Name="@UnitCost" PropertyName="Text"
Type="Decimal" />
<asp:ControlParameter ControlID="txtDescription" Name="@Description" PropertyName="Text"
Type="String" />
<asp:ControlParameter ControlID="txtWeight" Name="@Weight" PropertyName="Text" Type="Decimal" />
<asp:ControlParameter ControlID="txtDiscount" Name="@Discount" PropertyName="Text"
Type="Decimal" />
<asp:ControlParameter ControlID="chkIsActive" Name="@isActive" PropertyName="Checked"
Type="Boolean" />
<asp:ControlParameter ControlID="DropDownListAuthors" Name="@IDAuthor" PropertyName="SelectedItem"
Type="Int32" />
</InsertParameters>
</asp:SqlDataSource>
------------------------------------------------------------------------------------------------------------
ALTER PROCEDURE dbo.StoredProcedure1
@CategoryID int,
@ModelNumber nvarchar(50),
@ModelName nvarchar(50),
@ProductImage nvarchar(50),
@UnitCost money,
@Description varchar(500),
@weight money,
@IsActive bit,
@DiscountPerCent int,
@IDAuthor int
AS
INSERT INTO dbo.CMRC_Products (
CategoryID,
ModelNumber,
ModelName,
ProductImage,
UnitCost,
Description,
weight,
IsActive,
DiscountPerCent,
IDAuthor
)
VALUES (
@CategoryID,
@ModelNumber,
@ModelName,
@ProductImage,
@UnitCost,
@Description,
@weight,
@IsActive,
@DiscountPerCent,
@IDAuthor
)
SELECT @@IDENTITY as [NewID]
------------
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I would like to enable paging so that only 5 blog entries at a time are displayed. The user should be able to page backwards and forwards 5 at a time.
Please can somebody give me some ideas of how I should do this?
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I realise that the DataReader object reads in one continuous stream so I couldn't expect it to read backwards and forwards from the database.
I include a portion of my code below which reads the database.
Many thanks.
Dim objCommand As New SqlCommand objCommand.Connection = objConnection objConnection.Open() objCommand.CommandText = "SELECT BlogID, Date, Blog FROM BlogSite2_Blogs ORDER BY Date DESC"
Dim objReader As SqlDataReader = objCommand.ExecuteReader(CommandBehavior.CloseConnection)
Dim dateDateTime As Date Dim strBlogEntry As String Dim intBlogID As Integer
Do While objReader.Read() intBlogID = objReader.GetValue(0) dateDateTime = objReader.GetDateTime(1) strBlogEntry = objReader.GetString(2)
CreateBlogRow(intBlogID, dateDateTime, strBlogEntry) Loop
objReader.Close()
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Apr 18, 2005
Hi everyone
I have 2 options to implement a very simple web forum. Which one is better??…..
The first approach is as the following:
-create a Posts table which will contain all posts.
- create a replies table which will contain all replies.
- The relation between Posts table and replies table is ONE to MANY
Advantages of this approach:
- It follows the rules of normalization.
- It avoids null values which will accrued if all replies and posts where stored in 1 table.
Disadvantages of this approach:
- When it comes to implementing the search operation and data retrieve against posts table and replies table, I will need to run 2 different queries which means 2 connection to my SQL database. This means a slower execution and round trip to my SQL database.
The second approach is as the following:
- Create one table which will contain all posts and replies.
Advantages of this approach:
- one query will be executed, which means faster execution than the first mentioned approach
- it avoids round trip to my SQL database which happens in the first mentioned approach
Disadvantages of this approach:
- It does NOT follows the rules of normalization.
- You will end up with null values (for example the post title field will be empty when inserting a reply.)
I would appreciate any comments or thoughts.
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