DB Cluster And Mirroring

Jun 14, 2006

Currently we have implemented SQL 2005 in a clustered environment. I have two questions:

1. Is it possible to mirror a clustered DB?

2. If mirroring is implemented, is DB clustering still needed or makes sense?

Thanks.

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Cluster Mirroring

Oct 27, 2006

I've read a lot of the information about this topic in MSDN. My boss askme to understand and to let working an example application of Cluster Mirroring. The problem is that i dont understand well yet what is a Cluster and what is the main idea behind it.

If someone really understand and can explain me clearly whats behind it, i will be very grateful. Thanks a lot for the help. ( Sorry for me english :( )

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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

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Mirroring :: Combined With Cluster And Asynchronous Mirror

Jun 1, 2015

I have configured active passive cluster in production environment. And we also have a dr which we have configured with asynchronous mirroring with no witness. Currently active node(node

a) is in sync with dr. When failover happens and the second node(node
b) becomes active, the mirror is broken and goes to disconnected mode.

But when we failback again to node a mirror is connected again and is in sync again. In our setup we have active passive cluster and a standalone server as dr.

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SQL 2005 Cluster And Mirroring Hardware Requirements

Dec 4, 2007

Hi,

I was hoping to learn from real world experience regarding the hardware requirements for SQL 2005. For both the 32 and 64 bit OS the minimumn recommendaiton is single processor, 1GB or more, 512 MB RAM.

http://www.microsoft.com/sql/editions/enterprise/sysreqs.mspx


This seems very thin and I was wondering if anyone had recommendations for hardware configs for a mirrored db cluster? I'm filling in as a DBA and apologize for the ignorance.

Jody

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Recovery :: Failover Cluster With Mirroring With AlwaysOn?

Jun 30, 2015

we have to build high availability SQL 2012 cluster for VDI and we have two options. One option is to build a server cluster with combination of failover and mirroring and other option is to build failover cluster with AlwaysOn.We are not sure which option to chose. We have contacted Microsoft support to provide us some documents and instructions for failovermirroring combination but they have send us instructions for AlwaysOn option.

What would be best way to build high availability cluster for VDI? Also, since first option is very complicated.

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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?

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Mirroring :: Database Mirroring Changes In Application

Oct 12, 2015

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....

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Mirroring :: Setting Up Mirroring With Different Vlans?

Sep 15, 2015

I need to set up asyncronous data replication across two clustered instances of SQL 2012 across 2 Datacenters. Both the datacenters have a common domain however the vlans are different. There are only 3 small databases on the primary instance.

any issue in setting up mirroring in this case as vlans are different.

Operating system is Windows 2012.

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Setup And Upgrade :: Cluster Installation Failed On Adding Node To Cluster

Oct 10, 2015

During the installation of Adding node to a SQL Server failover cluster(On passive node) getting error like.. The MOF compiler could not connect with the WMI server. This is either because of a semantic error such as an incompatibility with the existing WMI repository or an actual error such as the failure of the WMI server to start.We  run the below commands but didn’t get any resolution & got the same above error .
 
1<sup>st</sup> Method…

1. Open console command (Run->CMD with administrator privileges). 

2. net stop winmgmt 

3. Rename folder %windir%System32WbemRepository to other one, for backup purposes (for example _Repository). 

4. net start winmgmt

2<sup>nd</sup> Method..

1. Disable and stop the WMI service.

a) Command : - sc config winmgmt start= disabled

b. Command : -                 net stop winmgmt

2. Run the following commands.

a).  Command:  Winmgmt /salvagerepository %windir%System32wbem

b). Command:   Winmgmt /resetrepository %windir%System32wbem

3. Re-enable the WMI service

Command:          sc config winmgmt start= auto 

Last command to run after above steps

4. Command:     mofcomp "%programfiles(x86)%Microsoft SQL Server100Sharedsqlmgmproviderxpsp2up.mof"

File not found Error for above command.

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Access Denied To Cluster Storage When Restoring 2005 Full Text DB To 2014 Cluster

Jun 10, 2015

I am in the process of moving databases from a SQL 2005 Standard version to a 2-node 2014 cluster.All of my 2005 databases back up successfully.They all restore without issue except for one database that has a full text catalog. I get this message

Msg 7610, Level 16, State 1, Line 2
Access is denied to "fileStoragedataMSSQLSERVERFullTextCatalog", or the path is invalid.
Msg 3156, Level 16, State 50, Line 2
File 'sysft_FTCatalog' cannot be restored to 'fileStoragedataMSSQLSERVERFullTextCatalog'. Use WITH MOVE to identify a valid location for the file.
Msg 3119, Level 16, State 1, Line 2
Problems were identified while planning for the RESTORE statement. Previous messages provide details.
Msg 3013, Level 16, State 1, Line 2
RESTORE DATABASE is terminating abnormally.

[code]....

I went as far as giving the folder full access to everyone temporarily and received the same error.

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SQL 2012 :: Advanced Cluster Preparation For New Instance On Existing Cluster

Apr 10, 2014

I ran the Advanced cluster preparation for a new sql instance on an existing cluster.

Slq Server 2012.

After is completed, it was successful, I realized I specified the wrong Instance Root directory.

Is it possible to remove what the preparation installed? Or is it possible to change the root directory?

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Setup And Upgrade :: Can Build Cluster By Adding Cluster Service

Jul 6, 2015

Can I build a cluster by adding the cluster service, then the SQL instances, then add the other nodes and their passive SQL instances?I would lean to building the cluster first, the add the SQL instances.

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SQL 2012 :: Server Cluster Without Windows Failover Cluster

Feb 18, 2014

I´ve been reading that SQL Server 2012 Always On is dependent on having a Windows Failover Cluster setup. Is that correct ?

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T-SQL (SS2K8) :: Convert Non-cluster Primary Key To Cluster Unique

Nov 6, 2014

I have following script which i am planning to run to drop all non-clustered primary keys on a database and then created as clustered. I am using someone else's script so don't know how to modify this. Some of primary key columns are used in references in other tables.

is there anyway i can drop the existing primary keys and using their original script then create again as clustered including restoring all foreign and reference keys and unique or no unique.

DECLARE @table NVARCHAR(512), @tablename NVARCHAR(512),
@sql NVARCHAR(MAX), @sql2 NVARCHAR(MAX), @sql3 NVARCHAR(MAX),
@column NVARCHAR(MAX);
DECLARE @indexname NVARCHAR(512);
SELECT name As 'Table'

[Code] ....

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Recovery :: Can Join A Node In Windows Cluster Which Is Already In Different Cluster

Oct 8, 2015

can we join a node in a windows cluster which is already in a different cluster?

We have this requirement as we need to setup readable secondary ( always on AG) on the third node.

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Recovery :: IP Change For Cluster / Nodes And Windows Cluster?

Jul 15, 2015

We are planning to change all IPs of PRODUCTION Failover Cluster Setup. In my cluster setup ... we have 2 Physical Nodes with windows-2008, Roles are MSDTC and SQL-2008R2.

IP change for:

1. Both Nodes(Physical)
2. MSDTC
3. SQL Server 
4. windows Cluster 

So Almost... All IPs are going to change.

Im DBA here, I need to take care of SQL cluster and MSDTC. But I haven't performed this activity before.So I'm worrying about Impacts and consequences of this change. steps how should I perform this activity.

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Script To Change Cluster Index To Non Cluster

May 20, 2003

Hi all,

We have many tables which have cluster index on column with datatype 'Char(200)'.
Does anyone have script to change cluster index to noncluster for all user tables which have clustered index on a column with 'char(200)' datatype.

Thanks,
Deepak

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Transact SQL :: Difference Between Cluster And Non-cluster Index

Jul 26, 2015

Wanted to know about difference between cluster and non cluster index with example.

When to use cluster index and non cluster index .

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DB Engine :: Why Cluster And Non-cluster Indexed Created On Same Key

Jun 10, 2015

CREATE TABLE [dbo].[Access](
 [AdminID] [int] NOT NULL,
 [FnID] [int] NOT NULL,
 CONSTRAINT [PK_AccessFn] PRIMARY KEY NONCLUSTERED

[Code] ....

why the cluster and non cluster indexed created on the same key?

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SQL 6.5 Cluster Upgrade To SQL Server 7.0 Cluster

Jul 17, 2000

I am trying to upgrade a SQL Server 6.5(Cluster) to SQL Serevr 7.0 (Cluster)..I already have an intsllation of 7.0(On a Cluster),so this means that 6.5 and sql 7 are on seperate cluster's ,if i try to upgrade from 6.5 Cluster to 7.0 Cluster is asks me to uncluster 6.5 and 7.0 is this correct ,assume i cannot break the cluster then what???.. what is the best way i can achieve this functinality.....

thanks in advance

Jack

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How To Upgrade SQL Server 2000 Cluster To SQL Server 2005 Cluster(Database)

May 8, 2007

Hi



We are planning to upgrade the SQL Server in our production environment from SQL Server 2000 to SQL Server 2005. This is a 4 Node cluster environment with 3 Databases on 3 Virtual instances. The main requirement is to achieve this with no/minimal downtime.



Could you please suggest or direct me to any documentation for the best practices used to upgrade such an environment?



Thanks

Priyanka

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Active/Active Cluster Failure - How Do You Rebuild And Rejoin A Node In The Cluster?

Aug 30, 2006

We have (had) an active/active cluster. 2 physical machines,
each running their own instance, clustered together. Node1/Ins1 and Node2/Ins2.



Node2 failed and Ins2 failed over to Node1 as it should. Node2 required that we
rebuild the server (rebuild = reinstall O/S). Now we need to get Node2 back
into the cluster and get Ins2 failed back over to Node2.



Does anyone know, for certain, the correct steps to accomplish this? Obviously,
we could backup everything and completely destroy Ins2 and recreate it on Node2
then rejoin the cluster. But I'm looking for something less destructive.



Is it possible to reinstall SQL, then rejoin the cluster, and then fail Node2
over? Or will there be registry conflictions?



Any help would be appreciated. Also, if you have any links to some official
documentation, that would be great too.



Thanks

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Upgrading A SQL Server 2000 Cluster To A SQL Server 2005 Cluster

Dec 28, 2007



We're upgrading a SQL Server 2000 cluster (Active/Passive) running on Windows 2000 Server to a SQL Server 2005 Cluster running on Windows Server 2003. We can't purchase new hardware and we have no spare hardware. We also need to move from Windows 2000 Server to Windows 2003 Server at the same time. We want to keep downtime to a bare minimum.

What we were thinking was the following steps... Anyone try this?

1. Break the link between the servers.

2. Install a fresh copy of windows 2003 server on one side along with SQL Server 2005. While this step is running, the active node would still be live on Windows 2000 Server and SQL Server 2000 serving our customers.

3. Restore a copy of a backup from the active production side to the node we're upgrading and at that point we would bring the active node down, switching the active node to be the newly upgraded server.

4. As a final step, the old active node would now have the link to it broken, we would install a fresh copy of windows 2003 server on it and sql server 2005. At this point we would bring it back into the cluster and the cluster would be complete again.

Thoughts?

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Upgrading SQL Server 2000 Cluster To SQL Server 2005 Cluster

May 14, 2008



Friends -

Need your help and guidence for doing upgrading SQL Server 2000 Cluster to SQL Server 2005 Cluster.

Let me explain my current environment.

1. Currently SQL Server 2000 Cluster environment is running on Windows 2000 Server we need to upgrade this to SQL Server 2005 on Windows 2003 Server. >>> Production environment.


My Plans:

1. On Testing Environment Install SQL Server 2000 cluster on Windows 2003 Server and do a restore of databases from the produciton environment.

2. Upgrade In-Place from SQL Server 2000 Cluster to SQL Server 2005 Cluster.

My doubts

1. Can i install SQL Server 2000 Cluster on Windows 2003 Server. Is it possible or not.

Please advise me and correct my steps.

Cheers
VSH

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Can The SQL Cluster Virtual IP Be The Same As The Cluster IP?

Jun 13, 2007

Can the SQL Cluster Virtual IP be the same as the cluster IP?

Can I set up the cluster like:

Node 1:10.0.0.1

Node 2:10.0.0.2

MSCS Shared:10.0.0.3

SQL Virtual:10.0.0.3



or do they need to be unique?



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How To Transfer Or Migrate From Old SQL Cluster 2000 To New SQL Cluster 2000

Jul 4, 2007



I have two Windows 2000 servers (Advance Edition) to form a Windows Cluster. I also install MS SQL 2000 Enterprise Edition on the cluster to form a MS SQL cluster. Now, I want to upgrade the hardware and OS (but keep on using SQL 2000), so I install Windows 2003 server Enterprise Edition on two new servers to form a new Windows Cluster. I am planing to install MS SQL 2000 Enterprise Edition on the new cluster, so the old SQL cluster and new SQL cluster are side by side. I would like to know how to setup a new SQL cluster (I know it has problem to rename SQL Cluster name, so how to fix this problem)? And how to transfer everything (such as system databases, users database, sql user account, password and maintenance plan jobs etc) from old SQL cluster to new SQL cluster? And how to switch over from old SQL cluster to new SQL cluster?



Thanks a lot !

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How SSIS Works With Cluster SQL And Non Cluster SSIS Service?

Mar 14, 2008



According to microsoft, we can cluster SSIS service but it is NOT RECOMMENDED.
http://msdn2.microsoft.com/en-us/library/ms345193.aspx

Now this is the situation that I have where I need to understand how SSIS works?

Enviornment: Active Active cluster enviornment for SQL server with SSIS server installed as stand alone as default on both node.


Name: Node 1 Node 2
--------- -------------- ---------------------
Server name: Nd1 Nd2
SQL server name: cs-nd1in01 cs-nd2in02
SSIS server name: Nd1 Nd2

BTW, this is cosolidated enviornment so there are more than one application expected and resides on each instance of SQL server.

The question is around SSIS, what would be the best practice to develop SSIS package that can work with above envoinrment.

Secnario: What if my Nd1 fails. SQL server cs-nd1IN01 will be failover to Nd2 and it will be available. But How about SSIS packages? How that understands
to use Nd2 SSIS as Nd1 SSIS is not available. Is anyone has similar experience to setup SSIS in cluster envionrment but as non-cluster service?

Please help. Thanks in adavance.

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Step By Step For Upgrading SQL Server 2000 Cluster To SQL Server 2005 Cluster

May 15, 2008



Friends -

Could any one of you provide steps for upgrading SQL Server 2000 cluster to SQL server 2005 cluster.

My environment is Windows 2003 server.

Appreciate your support.

Cheers
VSH

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Mirroring

Mar 7, 2000

Hi All
By mirroring I mean device mirror, since I do not think that there is a database mirror
We only have disk mirror. I also know that SQLServer 7.0 does not provide Mirror, unmirror or remirror. and for this we have to refer to Windows NT disk mirroring.
I need mirroring in both versions SQL Server 6.5 and 7.0

I want to have mirror on another server. I need this for tonight.
Sincerely.

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Help Need For Mirroring

Apr 1, 2008

I hereby let u know the steps that i undertook for performing mirroring



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.

========

Kindly let me know please where am i going wrong

Regards
cmrhema

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Db Mirroring

Mar 13, 2007

hello

if i run dbcc dbreindex on a database thats the principal in a mirrored pair, will the mirrored database indexes also be rebuilt?

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Db Mirroring

Mar 27, 2007

i am for the first time creating the database mirroring.I am moving the all the usr databases and everything from test server to a new server called test1.And from that new server i am restoring on the another new server called test2 for database mirroring.But in the test server , the transaction logs are backup for every 15 minutes.So in this case is there a need to move all the logs to test1 and then to test2 for mirroring?? or there is no need to move transaction logs to the new servers at all??


my secnario
------------
server1 server2 server3
-------- ------- --------
test test1 (moving everything from test) test2(mirror for test1 )

all the transaction logs are backup in test for every 15 minutes. so in this case , do i need to move the transcation logs from test to test1 and test2
or there is not need to move at all??


thanks,

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