Renaming A Clustered SQL Instance
Nov 22, 2007
We are in the process of migrating our databases from one pair of Servers running SQL Server 2000 using a Failover Cluster to another pair.
Unfortunately, we have some programs that are hard-coded to the existing instance and it will take time I don't have at this time to rewrite those programs.
Our old Clustered SQL Server is named SQLCluster and the new one is named SQLCluster2
We have backed up and restored the databases themselves, but cannot seem to rename the new SQL Server Cluster to SQLCluster.
Is there a way to do this?
'til later,
Scott
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Mar 20, 2014
I have a 3 node cluster on which I have installed SSAS as it's own insntance. I have created this as a named instance and can connect to it by serverinstance if I'm on the server itself. However from my desktop I get the error saying instance was not found on server name.
I have defined an alternate port and setup firewall rules and can connect via server:port but not serverinstance. Prior to making this change SSAS was running on default port of 2383 and I could connect just by servername.
I have read many articles for previous versions saying that clustered SSAS will always use 2383 and that you must connect just using servername. However and this is were it gets strange. I have a 2 node UAT cluster with SSAS setup exactly the same way I've described above and I can connect from my desktop as serverinstance.
Should I be able to connect as serverinstances for a named clustered instance in 2012 ?
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Jun 24, 2015
Is it possible to run SQL server clustered instance on 2 different IP on two different segment? or two different IP's on the same segment? We are using SQL server 2014 STD and Windows server 2012r2 STD...
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Feb 19, 2015
I've installed SSAS 2012 as a failover cluster instance on a 2-node Windows 2012 R2 cluster. All was fine in that regard but I now need to change the instance name so am going about the process of uninstalling and re-installing. I've successfully removed the second node from the configuration using the "Remove cluster node" wizard from the Setup options, but when it comes to removing it from the final node I'm getting the error "the cluster group **** could not be moved from node x to node 'null'". At this point the uninstall fails and the cluster resource remains in cluster administrator. It's obviously done some work/damage because the service won't start now, but it's left in limbo land where I can't do anything with it.
Is there a manual way of removing the instance to overcome this issue (file deletions, registry entry deletions etc.)?
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Mar 19, 2008
I will be installing a second SQL 2005 instance on an existing SQL 2005 clustered installation. We've added a set of disks for the new instance. My question is, will the existing clustered instance need to be taken offline for the installation, or will the nodes need to be rebooted after installing the new instance?
I haven't been able to confirm this on MS website or by Googling.
I understand we need to ensure no one is logged in to the remote nodes during the install as well.
Thank you
Grant
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May 7, 2015
In our lab we have 2 clustered instance of Sql server 2018R2 as follows
Virtual Server Name
IP SqlVir 10.1.1.6
SqlVirDr 10.1.1.12
The Data is SqlVir is replicated manually every day to SqlVirDr.
We had to change the Virtual Server name of SqlVirDr to SqlVir so that all dot net applications accessing SqlVir could continue to access the database without changing the application string.
For that purpose I deleted the computer name SqlVir from the domain and its IP 10.1.1.6 from DNS. Then I went to the failover cluster manager of SqlVIrDr right clicked the Sql services selected the properties and changed the DNS name from SqlVirDr to SqlVir.The applications then could access the data.However when I changed the network IP address from 10.1.1.12 to 10.1.1.6 the Sql services was found to be down.
Perhaps the procedure I followed in deleting the computer name from domain and the IP from DNS was wrong.What exactly is the steps that I should follow to achieve the above objective.
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Oct 22, 2014
Approach 1:
Prod - shared storage between server 1 and 2
Server1: clustered SQL instance with availability group as primary
Server2: Passive server for clustered instance of PROD
DR - shared storage between server 1 and 2
Server1: Clustered SQL instance with availability group as replica
Server2: Passive server for clustered instance of DR
Approach 2: Using replicated SAN
Prod -
Server 1: Standalone instance with availability group as Primary
Server 2:Standalone instance with availability group as replica
DR -
Server 1: Offline until Disk group 1 (Prod server 1) has been broken and brought online at DR
Server 2: Offline until Disk group 2 (Prod server 2) has been broken and brought online at DR
Both these approaches will work wont they? I have only built and played with normal availability groups across servers, not mixing it with clustered instance replicated SAN
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Sep 3, 2015
I get "there was an unknown error applying the filestream settings("0x800710dc ") configuring my sql clustered instance with configuration manager. Not clear for me what I have to set for "Windows shared name".. Is it just an aliases or do I have to give the name of a shared disk ??
Get the same issue with SQL2012 and SQL2014..
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Apr 22, 2015
We have an Sql Server 2008R2 Clustered production instance by name 'ProdVir' configured in 2 nodes(Active-passive) withWIndows Server 2008 R2. We also have another clustered instance as disaster recovery by name 'VirDr' configured again in another 2 nodes of Windows Server 2008 R2. Every day morning there is mainatenace plan which backups all the database in production and another maintenace plan in the disaster recovery server 'VirDr' which restores the backups into the VirDr instance.
I would like to know that in an eventuality of a disaster in the clustered production instance of 'ProdVir'. could we rename the the instance VirDr(meant for disaster recovery) to ProdVir and also change the Ip addresses accordingly so that the application programs do not have to change the details for the datasource in the connection strings.
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Jun 11, 2012
We have SQL Server 008 R2 failover clustered instance.
Installation and everthing went smooth. But I'm getting a weired error
Unable to connect to SQL Server clustered instance from one of the nodes
When SQL Server Resources are on sql1:
Connect from SSMS from sql2--> NOT Able to connect to SQL instance (A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 2))
Connect from SSMS from sql1-->Working fine
When SQL Server Resources are on sql2:
Connect from SSMS from sql1-->Working fine
Connect from SSMS from sql2-->Working fine
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Aug 25, 2015
We have installed 2014 sql server on a stand alone VM and can create alerts without issue. We recently did a cluster install of 2014, and when trying to create alerts get the following error:
Msg 14262, Level 16, State 1, Procedure sp_verify_performance_condition, Line 52
The specified object_name ('Databases') does not exist.
Specifically, we are trying to create a database alert on percent log used that will kick off a job to back up the log.
We are on Windows 2012R2 o/s. In the drop downs in SSMS under alerts, we do not have all the options we have in the stand alone instance - they are not there. Is this a bug? Is there a CU?
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May 14, 2015
How can i add additional SQL server instance to existing clustered environment on SQL 2005.
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Apr 21, 2004
I installed sql server on one of my test servers, and I am eventually going to rename this server and put it into production. This server will replace one of my old servers with the same name. I was wondering if there was a way to rename the SQL Server instance after you rename your server without having to reinstall SQL Server. Thanks in advance for all the help.
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Sep 4, 2015
We are going to use SQL Sever change tracking. The problem is that some of our tables, which are to be tracked, have no primary keys. There are only unique clustered indexes. The question is what is the best way to turn on change tracking for these tables in our circumstances.
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Aug 28, 2015
I desire to have a clustered index on a column other than the Primary Key. I have a few junction tables that I may want to alter, create table, or ...
I have practiced with an example table that is not really a junction table. It is just a table I decided to use for practice. When I execute the script, it seems to do everything I expect. For instance, there are not any constraints but there are indexes. The PK is the correct column.
CREATE TABLE [dbo].[tblNotificationMgr](
[NotificationMgrKey] [int] IDENTITY(1,1) NOT NULL,
[ContactKey] [int] NOT NULL,
[EventTypeEnum] [tinyint] NOT NULL,
[code]....
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Jul 19, 2013
I have created two tables. table one has the following fields,
Id -> unique clustered index.
table two has the following fields,
Tid -> unique clustered index
Id -> foreign key of table one(id).
Now I have created primary key for the table one column 'id'. It's created as "nonclustered, unique, primary key located on PRIMARY". Primary key create clustered index default. since unique clustered index existed in table one, it has created "Nonclustered primary key".
My Question is, What is the difference between "clustered, unique, primary key" and "nonclustered, unique, primary key"? Is there any performance impact between these?
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Aug 24, 2006
Hello,
How do I restore a sql database that is on a clustered server from a sql database backup file that is on a non_clustered server?
Thanks,
Serey
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Jan 4, 2008
I have large table with 10million records. I would like to create clustered or non-clustered index.
What is the quick way to create? I have tried once and it took more than 10 min.
please help.
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Sep 8, 2006
Hi there, I have a table that has an IDENTITY column and it is the PK of this table. By default SQL Server creates a unique clustered index on the PK, but this isn't what I wanted. I want to make a regular unique index on the column so I can make a clustered index on a different column.
If I try to uncheck the Clustered index option in EM I get a dialog that says "Cannot convert a clustered index to a nonclustered index using the DROP_EXISTING option.". If I simply try to delete the index I get the following "An explicit DROP INDEX is not allowed on index 'index name'. It is being used for PRIMARY KEY constraint enforcement.
So do I have to drop the PK constraint now? How does that affect all the tables that have FK relationships to this table?
Thanks
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Nov 24, 2014
What is the easiest way to remember the definitions of clustered and non clustered indexes.
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Sep 30, 2015
I have a really super slow stored proc that does something simple. it updates a table if certain values are received.
In looking at this the matching is done on the Primary Key, which is set as a Clustered index, looking further I have another constraint, that sets the same column to a Unique, Non-Clustered.
I am not sure why this was done, but it seems to be counter productive. I have read only references to Which one is better on a primary key, but not can their be both and if it is "Smart".
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Feb 26, 2008
Hello,
I've a table with primary key defined as non-clusterd, now without dropping it can I modify the existing index to clustered through tsql as I had to write some migration script and in that script I wanna do this.
Thanks in Advance,
Rohit
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Jan 31, 2005
I would like to find information on Clustered and Non-clustered indexes and how B-trees are used. I know a clustered index is placed into a b-tree which makes sense for fast ordered searching. What data structure does a non-clustered index use and how? I tried to find info. on the web but couldn't get much detail...
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Nov 1, 2007
I have a table<table1> with 804668 records primary on table1(col1,col2,col3,col4)
Have created non-clustered index on <table1>(col2,col3,col4),to solve a performance issue.(which is a join involving another table with 1.2 million records).Seems to be working great.
I want to know whether this will slow down,insert and update on the <table1>?
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Nov 14, 2006
the query:
SELECT a.AssetGuid, a.Name, a.LocationGuid
FROM Asset a WHERE a.AssociationGuid IN (
SELECT ada.DataAssociationGuid FROM AssociationDataAssociation ada
WHERE ada.AssociationGuid = '568B40AD-5133-4237-9F3C-F8EA9D472662')
takes 30-60 seconds to run on my machine, due to a clustered index scan on our an index on asset [about half a million rows]. For this particular association less than 50 rows are returned.
expanding the inner select into a list of guids the query runs instantly:
SELECT a.AssetGuid, a.Name, a.LocationGuid
FROM Asset a WHERE a.AssociationGuid IN (
'0F9C1654-9FAC-45FC-9997-5EBDAD21A4B4',
'52C616C0-C4C5-45F4-B691-7FA83462CA34',
'C95A6669-D6D1-460A-BC2F-C0F6756A234D')
It runs instantly because of doing a clustered index seek [on the same index as the previous query] instead of a scan. The index in question IX_Asset_AssociationGuid is a nonclustered index on Asset.AssociationGuid.
The tables involved:
Asset, represents an asset. Primary key is AssetGuid, there is an index/FK on Asset.AssociationGuid. The asset table has 28 columns or so...
Association, kind of like a place, associations exist in a tree where one association can contain any number of child associations. Each association has a ParentAssociationGuid pointing to its parent. Only leaf associations contain assets.
AssociationDataAssociation, a table consisting of two columns, AssociationGuid, DataAssociationGuid. This is a table used to quickly find leaf associations [DataAssociationGuid] beneath a particular association [AssociationGuid]. In the above case the inner select () returns 3 rows.
I'd include .sqlplan files or screenshots, but I don't see a way to attach them.
I understand I can specify to use the index manually [and this also runs instantly], but for such a simple query it is peculiar it is necesscary. This is the query with the index specified manually:
SELECT a.AssetGuid, a.Name, a.LocationGuid
FROM Asset a WITH (INDEX (IX_Asset_AssociationGuid)) WHERE
a.AssociationGuid IN (
SELECT ada.DataAssociationGuid FROM AssociationDataAssociation ada
WHERE ada.AssociationGuid = '568B40AD-5133-4237-9F3C-F8EA9D472662')
To repeat/clarify my question, why might this not be doing a clustered index seek with the first query?
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Sep 18, 2007
So I'm reading http://www.sql-server-performance.com/tips/clustered_indexes_p2.aspx and I come across this:
When selecting a column to base your clustered index on, try to avoid columns that are frequently updated. Every time that a column used for a clustered index is modified, all of the non-clustered indexes must also be updated, creating additional overhead. [6.5, 7.0, 2000, 2005] Updated 3-5-2004
Does this mean if I have say a table called Item with a clustered index on a column in it called itemaddeddate, and several non-clustered indexes associated with that table, that if a record gets modified and it's itemaddeddate value changes, that ALL my indexes on that table will get rebuilt? Or is it referring to the table structure changing?
If so does this "pseudocode" example also cause this to occur:
sqlstring="select * from item where itemid=12345"
rs.open sqlstring, etc, etc, etc
rs.Fields("ItemName")="My New Item Name"
rs.Fields("ItemPrice")=1.00
rs.Update
Note I didn't explicitly change the value of rs.fields("ItemAddedDate")...does rs.Fields("ItemAddedDate")=rs.Fields("ItemAddedDate") occur implicitly, which would force the rebuild of all the non-clustered indexes?
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Feb 4, 2015
We have a table, which has one clustered index and one non clustered index(primary key). I want to drop the existing clustered index and make the primary key as clustered. Is there any easy way to do that. Will Drop_Existing support on this matter?
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Jun 25, 2015
I have a requirement to only rebuild the Clustered Indexes in the table ignoring the non clustered indexes as those are taken care of by the Clustered indexes.
In order to do that, I have taken the records based on the fragmentation %.
But unable to come up with a logic to only consider rebuilding the clustered indexes in the table.
create table #fragmentation
(
FragIndexId BigInt Identity(1,1),
--IDENTITY(int, 1, 1) AS FragIndexId,
DBNAME nvarchar(4000),
TableName nvarchar(4000),
[Code] ....
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Jan 3, 2008
Does creating both a Clustered and Non-Clustered on the same field increase performace or decrease performance?
Or having either one is enough?
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Dec 6, 2005
What does an index add to the performance?
Why do we use Clustered Index and Non-clustered Index?
thanks
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Jun 10, 2008
Dear All,
i've observed one particular table, one column is having clustered and non clustered index. is it ok? or i need to drop the non clustered column?
the table has 16 columns and at present 8 million records are there. per day approxmately 60000 rows will be getting into the table. it has another 3 non clustered indexes.
please suggest me.
Arnav
Even you learn 1%, Learn it with 100% confidence.
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Feb 18, 2006
hi,
how clustered indexes and non-clustered indexes been saved in memory?
non-clustered is a table of a references to the actual table?
and what about clustered indexes?
thanks.
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Jul 22, 2015
I've two instances(Default, Named[dynamicsFINANCE]) running on SQL server 2014. However, when I try to connect to named instance say (dynamicsFINANCE) using SQL authentication from local SSMS, I get below error message:
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1)
I assigned a static port number to the named instance [dynamicsFINANCE] 1450. I also setup the firewall rule to allow access to Port 1450.
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