Hi Can Anybody help me what exectly is database mirroring? I am working in a small scale company. we have SQL server 2005 installed for a software used by our staff. Can any body expalin me what is mirrroring? how can i implements to my Database? What are the Basic Requirements? What are the Steps? Plz.. Thanks in advace who ever help me out for this......
After going through the Enterprise Manage mirroring setup, I get the error message ...
The server network address "TCP://MYMACH.mynet.net:5022" can not be reached or does not exist. Check the network address name and reissue the command. (Microsoft SQL Server, Error: 1418)
I have three instances of SQL Server 2005 Enterprise Edtion
MSSQLSERVER (primary) endpoint 5022
MSSQLSERVER (partner) endpoint 5023
MSSQLSERVER (witness) endpoint 5024
I have enabled TCPIP and named pipes on all three protocols.
In surface configuration I have enabled everything.
Each instance has the -T1400 flag set.
Each instance is running under mixed security.
Each sql Server and sql agent instance runs exactly in the same domain account.
The machine has been rebooted.
The following tests all pass
telnet MYMACH.mynet.net 5022
telnet MYMACH.mynet.net 5023
telnet MYMACH.mynet.net 5024
This problem happens both with Enterprise Edition and Developer Edition.
Any ideas?
AIM
Server A = primary SQL DBs (mirroring origination)
Server B = failover SQL DBs (mirroring destination)
For database mirroring a witness is required.
Can the witness live in another instance of SQL on server B?
Using SQL Server 2008, we would like propose mirroring between two servers of a critical database. Since we initiate, may require to clarify on its purpose and also required changes from application end.Any changes required from OS Level? (I believe both servers IP or Host name should be added in host entries. Mirroring ports should be allowed/open including Principal and mirror server IP Addresses): Windows Team.Any changes required from Application? (Instance name, authentication: user name and its password should be added in web config files): Application Team.Any changes required from Network Team?Also for mirroring both the principal and mirror servers should be with same version, does it only mean SQL Server 2008 versions are enough or does it also mean to say build numbers 10.00.4000 should also be same.URL....
View 5 Replies View RelatedI have just finished configuring my first test mirrored environment (High safety mode). I setup the database engine service accounts on each of the servers with domainuser. I inherited a production mirrored environment set up by someone else. On the production servers the database engine service account is NT Authorityuser a local account. I am trying to practice installing Windows updates within a mirrored environment and I not sure how to proceed when the service account is NT Authority user account. should I change the service account to a domainuser?
View 2 Replies View RelatedWhen I issue this command:
ALTER DATABASE foo set PARTNER = 'TCP://10.3.3.1:1234'
I get this error message:
The database is being closed before database mirroring is fully initialized. The ALTER DATABASE command failed.
What does that mean, and how do I fix it?
Hi,
View 6 Replies View RelatedAmanda writes "I'm a student currently taking a class working with the SQL database and I'm not doing too well in that class because I'm struggling on some basics. I have worksheets and everything i just need help working on them, and this being and on-line class makes it hard for me to work with my teacher. If someone is willing to work with me one on one through a messaging program or Email that would be great, i can send you the worksheets and we can work it out together."
View 5 Replies View RelatedI am trying to write a small program to keep track of my bank accounts using Visual Basic Express and Sql databases. My database has the usual expected columns in my table - deposit, withdraw and Balance. I am displaying this infor on my form in Datagrid view. My problem is I have no Idea how to get it to to the necessary calculations. I.e. if I enter an amount in the deposit or withdrawel column I want it to automatically update the balance column.
I have no Idea how to do this, where to code it or anything so some help for a newbie (in as simple steps as possible) would be really really appreciated. Since my program is useless without this bit working
Diane
First i am newbie in vb and Sql server...
Is possible to create and attaching, via vb classic or VBA, a sql
database in this instance:\DVD377-14D9E48CSQLEXPRESS...
I have Sql Express.
Database name: mydatabase
Database Table: mytable
fileds:
fiedl1 text format
fiedl2 text format
fiedl3 text format
fiedl4 date format
fiedl5 number format
fiedl6 text format
First i am newbie in vb and Sql server...
Is possible to create and attaching, via vb classic or VBA, a sql
database in this instance:\DVD377-14D9E48CSQLEXPRESS...
I have Sql Express(msde).
Database name: mydatabase
Database Table: mytable
fileds:
fiedl1 text format
fiedl2 text format
fiedl3 text format
fiedl4 date format
fiedl5 number format
fiedl6 text format
Let me get VERY specific.
This site has 40+ pages Using VWD 2008 (Studio 2008)
I have created in local IIS7 (129.0.0.2) http://cumc.lcl
Navigation.master, Web.config and Web.sitemap alll are structured
And all 40+ pages have been built.
NOW I added (using VWD) a sql server database named pagedata.mdf
With a table named: pages
and fields:
PageID - Primary Key (auto numbered)
pagename - nchar(30) exmp Default
hitcount - numeric(18,0)
createdate - nchar(15) exmp 04/18/2008
updated - nchar(15) similar to createdate
hitdate - nchar(15) similar to createdate
bottom of each page is to show 99999 visitors
and under that is to be Updated on mm/dd/yyyy
On pageload should accomplish the following increment the hitcount
field and save it and display it in HitLabel.text
Set UpdateLabel.text to updated field
Save the date the page was hit in hitdate field. (will only show when last hit)
The "tester.aspx" page now has:
<%@ Page Language="VB" MasterPageFile="~/Navigation.master" Title="tester" %>
<script runat="server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
End Sub
</script>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"></asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<p align="center">This page is for various tests<br />and will NOT be site mapped.</p>
<p align="center"></p>
<p align="center">
Can this SqlDataSource be moved into Sub Page_load above?
How do I extract, process and save the Hit and Date data
for each individual page referenced by pagename field?
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStringsageConnect %>"
SelectCommand="SELECT * FROM [main] WHERE ([pagename] = @pagename)">
<SelectParameters>
<asp:QueryStringParameter Name="pagename" QueryStringField="thispage"
Type="String" />
</SelectParameters>
</asp:SqlDataSource>
</p>
<p align="center">
<asp:Label ID="HitLabel" runat="server"></asp:Label>
Visitors<br />
Updated on <asp:Label ID="UpdateLabel" runat="server"></asp:Label>
</p>
</asp:Content>
I set up a new mirror server. Everything is good except that the Database Mirroring Monitor is not working for one of the databases. In the monitor the principal data is showing up as blank
If I look at dbm_monitor_data on the principal most of the data columns (e.g. Send_queue_size) are null where as they have data for the other databases.
Both servers are SQL Server 9.0.2047 Enterprise Edition.
Any idea what might be going on here?
Thanks in advance.
Admit have a txt file similar:
filed1 filed2
aaaaaaaaaa bbbbbbbbbbbbbb
cccccccccccc dddddddddddddd
.............
yyyyyyyyyy zzzzzzzzzzzzzz
How to create VIA VISUAL BASIC (ADO or DAO) a new SQL Server databse?
can i run such a transact SQL script with VB
use master
go
create database Ayhandeneme
on (Name=AyhanDeneme_Dat, FileName='c:ayhandeneme.mdf')
go
When you work with Visual Basic 2005 Express Edition on windows XP, and if your application contains references to SQL-databases, I have discovered that it is important that all identities be logged off before you open the particular identity where you want to work on your Visual Basic project. I have earlier assumed that it was only possible to work with Visual Basic on one identity, the one where the version was registered.
This assumption was not quite correct. Actually, you may run Visual Basic applications with SQL-references on all identities on XP, provided that no other identities that are using the SQL-server are currently running.
For example, suppose you start your computer and log on the identity James. Then you switch identity, but you actually don't log off James. Then you log on the John identity. There you discover that it is impossible to create a new SQL-database in Visual Basic's Data-connections view. An error message appears. Why is that? It is because the SQL-server is busy on the James-identity. To solve this problem you want to log off the John identity, don't just switch. Then log on the James identity again, and log off properly. All identities should now be logged off. Now you may log on the John identity again, and it is now possible to create an SQL database.
Concerning deploying applications for XP. This issue is similar to the one I just described. You cannot run the installation-file successfully on one identity if the SQL-sever is busy on another identity. You want to log off all identities before logging on the identity where you want to install the application. Same thing when you want to run the deployed application.
Question. Does this limitation exist only in the express-editions of Visual Studio 2005 as a drag on free-ware, or is it prevalent in commercial editions as well? I would like to know a little more about this before purchasing the standard or professional edition of Visual Studio 2005.
Best Regards
Ziper
Hi All,
Does anybody know the OS requirements for Database Mirroring? I checked BOL and Google but couldn't find any info on that.
Thanks.
Hi All,
I have read on the web that high protection mode not recommended, except in the event of replacing the existing witness server. But I can't find the reason why anywhere. Can anybody explain? Thanks.
Hi All,
Couple of questions about database mirroing.
1. Once the mirroring is setup is it possible to switch between high-protection and high-performance modes? If it is will I have to stop the mirroring, switch the modes and then restart it again?
2. Let's say the principal server went down and I manually failed over to the mirror server. Mirror server runs as a new principal server for a couple of days and then I bring the original principal server back up. What needs to be done in order to bring transactions on the principal server up to date?
Thanks.
for a database mirroring , which stretergy is good.
Creating with witness server or without it.?
I am firsttime doing this , so i am posting it to the forum..
and also if we are creating the database mirroring with witness server for automatic failover , will the witness server need the same amount of harddisk space like the pricipal or mirror server.??
thanks
we want to migrate our production server , without taking the database down.so what we did was , we mirrored the databases from production to one of our development servers and we took the prodcution server for uprgrade.
so today we are moving back (mirroring) all the databases from that development server to our new production server.
my question is , when i move
productionserver_old(principal server) - having the script for principal server
development server(mirror server---->principalserver)) - having the script for mirror server , which is now acting as principal server
new production server(mirror server) - having the script for mirror server. will become principal server , once i moved all the databases
now while mirroring between the developement server and the new production server, i have to run the scripts for the mirror server only.
so both the servers are havign the mirror script now...
is that a problem, or any other way i can handle this....
Hi All,
Does anybody know any good Tutorials for Database Mirroring (Automatic Failover) or Manual Sync with Mirror Server. I tried some sites online, but doesn't have detailed steps..
pls.help as i need to sync data with One of my Mirror using Sql Server 2005.
thanks
Hi,
I have some questions about database mirroring. we have almost 40 databases in one server. Can I set up the database mirroring for all the databases. Is it going to any affect on performance. we have already setup the mirroring on almost 30 databases, and I need to set up for the rest of 10. please some body could help on this. Thank you.
Hi,
i'm a novice of sql server and I have a problem.
I have to reply a server in which there are database that are managed with sql server 2000 sp3; what I must make in order to set up the mirroring between the database of the two server so that the data are always aligned ?
thanks for the attention
best regards
alessandro
I am new user of SQl and preparing the exam database mirroring....can you tell me how i start the mirroirng ..what is my first tep..and is there only one instance
View 3 Replies View RelatedHi All,
Couple of questions about database mirroing.
1. Once the mirroring is setup is it possible to switch between high-protection and high-performance modes? If it is will I have to stop the mirroring, switch the modes and then restart it again?
2. Let's say the principal server went down and I manually failed over to the mirror server. Mirror server runs as a new principal server for a couple of days and then I bring the original principal server back up. What needs to be done in order to bring transactions on the principal server up to date?
Thank you.
Can we have database mirroring for two databases. Like i have an application where in the db used are two, namely DB1 and DB2, DB1 is used in the connection string and with the help of DB1 the tables and sps of DB2 are handled.
in this case can i go ahead with database mirroring. Please comment and give the idea or link on the same.
Hi,
Is there a way to automatically mirror/backup a SQL Express database with a SQL Server 2005 licenced system?
They will be on seperate machines on the internet.
I have done manual backup and restores but would like to allow constant updates to allow both databases to be synchronized.
I read that the SQL Server 2005 version has a mirroring facility but I also read that this is not possible in the Express version.
What other (automated) options do I have?
Thanks Andrew
Hi,
Can I upload a database using visual basic 05 express edition ? or do I have to download sql server ?
Thanks
What are the basic processes for maintaining an SQL SERVER 2005 Database?
Is there a top ten list of things you should do periodically to all SQL SERVER 2005 databases?
I have an application written with Visual Basic Express 2008, which has a Sql Server Express Compact database incorporated into the application. I've been trying to follow the suggestions listed on several threads on how to backup up my database and have not gotten very far. The following code seems to be in most threads.
Dim dbstring = "Data Source=.SQLExpress;Integrated Security=true;User Instance=true;AttachDBFilename=|DataDirectory|ImmuLogDataBase.sdf"
Dim sqlconn As New SqlClient.SqlConnection(dbstring)
sqlconn.Open()
When run, this code returns the following error at the sqlconn.Open() command.
An attempt to attach an auto-named database for file G:ImmuLogImmuLoginDebugImmuLogDataBase.sdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
My solution is saved on a flash drive which I take between home and work. I'm hoping that that isn't the issue. I believe that Visual Basic loads the database when it starts and it is already open when this code is run. Is there a way to access this open database and run a backup procedure on it from within VB express 2008?
I'm new to this and self taught so explain everything in detail. Thanks for your help.
Bruce
Hello Everybody ..
Can anyone help me with some information or procedure as to how to mirror database devices in SQL Server 7.0 & SQL 2000 servers ?
SQL Server 6.5 has mirror utility built in the Enterprise manager .
Is there any way to do it on SQL 7.0 and SQL 2000 Servers ?
Any help will be appreciated .
Many thanks
Yatin.
what are the different testing we can do for the database mirroring with witness and without witness ??
thanks