Server Down With Database Mirroring
Mar 16, 2008I have setup database mirroring for one big database.But now Transaction log is full and server is down. What should i do? We do bulk-insert in that database.
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Database Mirroring | Can Witness Live On Mirroring Server?
May 3, 2008
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?
Mirroring :: Database Mirroring Changes In Application
Oct 12, 2015Using 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 RelatedSQL Server 2005 Database Snapshots With Mirroring
Mar 8, 2007Hello, My question is simply: according to BOL, a DB snapshot taken from a Mirror is read-only. Say I wanted a temporary (disposable) read-write DB created from the snapshot. Is there a way to generate a writable temp DB (that's not tempdb) from the snapshot? Thanks,AK
View 1 Replies View RelatedMirroring :: Migrate Mirror Database To New Server
Apr 14, 2015I need to migrate my SQL server Mirror Database to a new server. my current setup is as below
1. server A principal (192.168.1.100)
2. server B Mirror   (192.168.1.200)
Now i have a new server (Server C) to replace server B as below
1. server A principal (192.168.1.100)
2. server C Mirror   (192.168.1.300)
My question is how to migrate mirror db to new server without any affect or downtime on principal server.
note: SQL SERVER 2008R2 EE(64BIT), Win2008R2 EE 64bit.
Log Shipping Vs Database Mirroring With SQL Server Cluster
Oct 24, 2007
Dear,
Are possible build a solution with SQL Server 2005 Cluster and Database Mirroring? I have the following scenario:
1) Site A
SQL Server 2005 with 2 nodes and active/passive
2) Site B
SQL Server 2005 for Disater Recovery with Log Shipping.
Are possivel change Log Shipping by the Database Mirroring? If is possible, are better:
a) Synchronous(with or without witness)
b) Asynchronous
Thanks a lot! Sandro.
sgpcosta@hotmail.com
Database Mirroring Vs SQL Server FailOver (Performance)
Mar 15, 2006Hi there.
I´m running some tests in a database with Mirroring and without Mirroring. As expected there is a performance hit using Database mirroring.
The tests i´m running are just simple functions inserting and updating the database, and then counting the number of sucedeed inserts and updates in a time interval.
My question here is: What if i use Sql Server failover mechanism?
I know that failover time will increase and management is more complex, but what can i expect in terms of performance ?
Database Mirroring Support Also By SQL Server 2005 Without SP1
Sep 27, 2006Hi All,
I get a general question about the feacture "Database Mirroring". Is it support by SQL Server Standard. Edition without SP1?? Of i still need to upgrade the server from SQL Server 2005 to SQL Server 2005 with SP1?
Another question: are there any problem if the one machine(server) has installed SQL server 2005 Standard edition and the other with "Developer Editon".
I hope some one can answer my question. Thanks anyway!
Regards,
Pat
SQL Server 2008 :: Database Mirroring Timeout Setting?
Oct 20, 2011I have setup database mirroring with witness server. To prevent unnecessary failover because of network slow or other issue, I changed the timeout setting as
ALTER DATABASE <Database Name>
SET PARTNER TIMEOUT 120
Which I understand if connection is broken between principal and mirror, principal database will wait for 120 second and after that only automatic failover will happen.
If this is true, it does not happen in my case. Failover happens before120 second.
SQL Server Admin 2014 :: Mirroring Database Limits
Nov 22, 2014I have multiple SQL 2008 severs with databases. Also, 1 mirroring server in place.
Since my database count is increasing can i have only 1 mirroring server. Is there any limit of db at mirroring server. I would have approx. 150 databases.
SQL Server 2008 :: Encryption / Decryption On Mirroring Database
May 4, 2015I have created mirroring... one of the column is encrypted on mirror database and I can see the decrypted result when I do query when I actually logged into server (through remote connection) but when I use the same query through using SSMS from my laptop the query result come as the column is not decrypted,
View 0 Replies View RelatedSQL SERVER 2005 Database Mirroring For Large Number Of Databases
May 30, 2006I am trying to enable database mirroring for 100 database.
It goes error free till 59 databases (some times 60 databases) with the
status (principal, synchronized) on principal. on the 60th or 61st database
it gave the status (principal, disconnected). Also mirror starts acting
abnormal. connection to mirror starts to give connection timeout and it is
not enabling database mirroring on any more databases. I have SQL SERVER
2005 Enterprise with SP1 on the servers. witness is not included yet.
this are my test servers... i have more than 500 databases on my production
servers.
principal and mirror both are using port 5022 for ENDPOINT communication.
SQL Server 2005 Evalution Copy Database Mirroring In NT 4 Domian
Jul 17, 2007Dear All,
I have a download "SQL Server 2005 Evalution Copy". I installed it to 3 machine, 1 - XP Professional (Witness) and 2 - Windows Server 2000 (Principle and Mirror) . And I want to try Database mirroring.
However, after restore the Log into mirror server I try to execute the following statement in Principle Server:
ALTER DATABASE TestDB
SET PARTNER=N'TCP://[10.0.200.2]:5022'
GO
The above 10.0.200.2 is the mirror server IP address.
it show error message as:
Msg 1416, Level 16, State 31, Line 1
Database "SCMPGroup" is not configured for database mirroring.
In Miorror Server
I execute the statement :
ALTER DATABASE TestDB
SET PARTNER=N'TCP://[10.0.200.1]:5022'
The above 10.0.200.1 is the principle server IP address.
It shows sucess
ALTER DATABASE TestDB
SET WITNESS=N'TCP://[10.0.15.146]:5022'
it show error message as:
Msg 1416, Level 16, State 1, Line 1
Database "SCMPGroup" is not configured for database mirroring.
Please help me! I down't know if NT4 domain or evalution copy problem in there.
Mirroring :: Manual Failover Did Not Get Back Database On Secondary Server?
Jun 22, 2015I have SQL Server 2008 R2 database mirroring setup with witness. Below database connection string is used by the application
Â
jdbc:sqlserver://<Server_A>MSSQLSERVER;databaseName=<Mirrored_DB>;port=1433;failoverPartner=<Server_B>MSSQLSERVER
Â
During some maintenance activity at the OS side , I tried to manually failover database from Server_A to Server_B. It took long time for failover to Server_B. While failing over the Mirrored_DB database goes in In Recovery status and application is not able to connect to database. I waited for long time more than 40 mins for database to come online on Server_B but it did not work.So I have recovered database on Server_B using RESTORE DATABASE Mirrored_DB WITH RECOVERY.
Â
After database was recovered on Server_B application was not able to connect to database with error as "The database <Mirrored_DB> on server Server_BMSSQLSERVER is not configured for database mirroring".
Â
My Question is
Why manual failover did not get back database on secondary server upwhy the original  connection string below is not able to connect to the database while database is online on Server_B  but without mirroring
 jdbc:sqlserver://<Server_A>MSSQLSERVER;databaseName=<Mirrored_DB>;port=1433;failoverPartner=<Server_B>MSSQLSERVER
SQL SERVER 2005 DATABASE MIRRORING For Large Number Of Databases
Jun 1, 2006I am trying to enable database mirroring for 100 database.
It goes error free till 59 databases (some times 60 databases) with the
status (principal, synchronized) on principal. on the 60th or 61st database
it gave the status (principal, disconnected). Also mirror starts acting
abnormal. connection to mirror starts to give connection timeout and it is
not enabling database mirroring on any more databases. I have SQL SERVER
2005 Enterprise with SP1 on the servers. witness is not included yet.
these are my test servers... i have more than 500 databases on my production
servers.
principal and mirror both are using port 5022 for ENDPOINT communication.
All of the databases are critical and all must be included in the Database Mirroring.
so, after that I tried to implement database mirroring again......
System has 3 GB of RAM, SQL SERVER (Mirror) using 85 MB of RAM but still
giving this error while trying to enable database mirroring for 37th
Database.....
"There is insufficient system Memory to run this query"
WHY?
Database Mirroring. Asp Application (IIS 6.0) Does't Forward Connections To Mirror Server
Mar 28, 2007 Hi!
I have setup a database mirroring session without witness - ServerA is the principal, ServerB is the mirror,. Each SQL Server instance is hosted on its own machine on sql2005 EE SP2. The mirroring is working correctly. If I submit to server ServerA command:
ALTER DATABASE MYDBNAME SET PARTNER FAILOVER
, ServerB becomes the principal, it means that mirroring works correctly.
My issue is with the SQL Native Client and a front-end ASP application (actually IIS 6.0 site) that needs to make use of this database. I have setup my front-end application to use SQL Native Client and specified the failover server in connection string. Here is the connection string that I am using :
PROVIDER=SQLNCLI.1;Server=ServerA,1433;Failover Partner=ServerB,1433;Database=MYDBNAME;Network=dbmssocn;Integrated Security=SSPI;
Everything works perfectly on my front-end application when ServerA is the principal. If I execute on server ServerA command:
ALTER DATABASE MYDBNAME SET PARTNER FAILOVER
, ServerB becomes the principal, and the failover occurs correctly on the database side. The problem is that my front-end application is not able to query the database on ServerB. The error appears:
Microsoft SQL Native Client error '80004005'
Cannot open database "MYDBNAME" requested by the login. The login failed.
This behavior my appication till I unload IIS 6.0 pool application. After that my front-end application becomes work correctly with ServerB.
When I swap server, I execute on server ServerB command:
ALTER DATABASE MYDBNAME SET PARTNER FAILOVER,
my IIS 6.0 application automaticly turn back to ServerA without any action on my side.
I am using SQL Native Client last version http://download.microsoft.com/download/2/7/c/27c60d49-6dbe-423e-9a9e-1c873f269484/sqlncli.msi (issued in February 2007). Has anyone experienced this issue? I'm thinking that it's a problem in the SQL Native client
SQL Server Admin 2014 :: Database Mirroring Connection Handshake Failed
May 9, 2015I configured a database mirroring on SQL server 2008 R2 on test environment. However It was not working, after some time. I deleted the mirroring configuration and also deleted database on both primary and mirror instance.
few days later I notices, On Primary, Continuous error events logged with message "database mirroring attempt by user 'domainservice account' failed with error 'connection handshake failed, 'domainservice account' does not have permission on the endpoint state 84.
I want to get rid of this message.
SQL Server Admin 2014 :: Database Mirroring For Large Number Of Databases
Oct 27, 2015I have a 2 node cluster having 4 cores each wherein having 3 instances of SQL 2008 R2 enterprise comprising of 60 databases, 20 on each instance. I need to setup mirroring for each of the databases to a secondary server having 4 cores and 3 instances. What i understand is that in this case the mirror server will be providing max of 512 worker threads and the 60 mirror databases would consume 240 threads.what all needs to be checked for looking into the feasabilty of going ahead with a async mirror setup as mentioned above.
View 0 Replies View RelatedThe SQL Server Service Broker Or Database Mirroring Transport Is Disabled Or Not Configured
Jul 13, 2007Hi,
I received an alert 'The SQL Server Service Broker or Database Mirroring transport is disabled or not configured'
How can I check the status of the two? and if they are disabled how do I enable them?
Article: Database Mirroring Not Ready For Production When SQL Server 2005 Ships
Sep 16, 2005Can someone at Microsoft comment on this article, specifically, how it relates to SQL Replication? Will SQL Replication fall into the category of what this article describes, or only the mirroring feature?
View 1 Replies View RelatedMirroring :: 2012 Database Mirror Missing Witness Server Information?
Oct 24, 2015missing witness server information and the fail-over is broken suddenly? 4:00am no maintenance job. I have one sql job on 10pm for backup on database transaction log only.
I can see the primary have problem then perform fail-over to mirror database, the auto fail-over was broken.
I re-build the sql mirror is OK , but i want to find the root cause.
Windows application event was full when there have many failed event, i have increase log size for application event. Â
Communications To The Remote Server Instance Failed Before Database Mirroring Was Fully Started
May 12, 2006command in principal server
ALTER DATABASE database name
SET PARTNER = 'TCP://<mirror_server_name>:5022'
return:
Msg 1413, Level 16, State 1, Line 1
Communications to the remote server instance 'TCP://<mirror_server_neme>:5022' failed before database mirroring was fully started. The ALTER DATABASE command failed. Retry the command when the remote database is started.
This problem is only in production database any testing database include adventureworks mirroring sucessfuly. Why is problem:?
size? database > 9GB
slow HW? Principal database Intel D 3Ghz,4GB RAM, 4x 15k RPM HDD RAID 5 / Mirror database 2x Xeon 3Ghz,4GB RAM,6x HDD 10k RPM RAID 10
Slow LAN? both servers connect 1Gb/s
please help me
THX
Server Error 1431 When Setting Up Database Mirroring Using Local System Accounts And Certificate Authentication
May 24, 2006I attempted to setup database mirroring using a High Availability scenario but when I installed SQL is chose to use local system accounts for all the services. Consequently, I stubled upon a microsoft article explaining how to setup mirroring using local system accounts and certificate authentication but I am stil not able to get it to work. When I try ti initiate the mirror from the mirror server I receive an error stating "Neither the partner nor the witness server instance for database "EDENLive" is available. Reissue the command when at least one of the instances becomes available." I have checked all the endpoints and everything seems to be in order. I even checked to make sure that each server was listening on the appropriate ports and I AM able to telnet to the ports. Please help!
SQL 2012 :: Database Mirroring And NT Authority Account For Database Engine?
Dec 2, 2014I 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 RelatedThe Database Is Being Closed Before Database Mirroring Is Fully Initialized
Jun 12, 2007When 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?
Database Mirroring Hangs On ALTER DATABASE SET PARTNER
Jun 26, 2005Hi,
View 6 Replies View RelatedDatabase Mirroring Monitor Not Working For One Database
Apr 2, 2008I 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.
Database Mirroring
Oct 12, 2007Hi All,
Does anybody know the OS requirements for Database Mirroring? I checked BOL and Google but couldn't find any info on that.
Thanks.
Database Mirroring
Feb 27, 2008Hi 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.
Database Mirroring
Mar 12, 2008Hi 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.
Database Mirroring
Mar 15, 2007for 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
Database Mirroring
Jul 30, 2007we 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....
Database Mirroring
Mar 21, 2008Hi 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