Clustered SQL 2000
Dec 15, 2004
I am currently running a SQL 2000 Ent Server sitting on a MSCS running W2K3 Ent Edition.
One of the nodes is giving me problems, and I suspect that it is due to the build.
I want to evict the offending from the cluster and then rebuild the OS from scratch, and then rejoin the cluster.
My question then is how do I install SQL 2000 Server, up to tha same revision as the existing node, on the newly installed node without overwritting any of the existing data?
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Jan 27, 2003
I have read the readme, but just want to be sure. When installing sp3 on a clustered server (1 primary node with 1 secondary node as failover), all you have to do is log into the server that currently has all the resources and run the sp3 setup?
Is there anything else to it? Anything to watch out for?
I only have one instance and there's no replication or analysis services or anything else.
Unfortunately, I don't have another clustered server to test it on (long story - working on it)
Thanks in advance.
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Jul 24, 2002
I have a dedicated SQL server with SQL 7.0. I want to migrate and upgrade it to SQL 2000 instance under clustered environment. On my SQL 2000 upgrade wizard, I could not change the destination server name. By default it is my server name. I want to change it to the virtual Server name. Can somebody help me? Any tips and pitfalls?
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Feb 20, 2001
Hi all ,
I would like to know about third party tools available or sites where I can get some evaluations on this tools to load balance our Clustered SQL 2000 on Windows 2000. Thanks for the help In Advance.
Shaji
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Jun 12, 2007
I would like to upgrade a production active/passive SQL Server 2000 cluster to SQL Server 2005.
I've read all of the documentation I could find, and doing an in-place upgrade seems to be the way to go. (Despite the fact it scares the hell out of me.
But throughout all the documentation, I've yet to see some simple and fairly important questions answered.
How does the process of upgrading SQL Server work when you're dealing with a cluster?
Do you upgrade one machine then the other? If so, do you upgrade the active node first, or the passive node?
What happens if you're forced to failover from one instance to the other before you've had a chance to upgrade both to 2005? In other words, you failover from 2005 to 2000. Would that even work?
What happens if your upgrades fails for some reason? Is it easy to rollback the installation? If not, will reinstalling SQL Server 2000 cause any issues? Will it remember the previous configuration and simply fix the broken install?
Any help/insight would be greatly appreciated.
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Jun 21, 2005
I am using SQL Server Enterprise 2000 and have created a full text search on the pubs database as per the instructions below:-
http://www.databasejournal.com/features/mssql/article.php/3441981
However, when I verify the search :-
SELECT title, notes
FROM titles
WHERE CONTAINS (notes, ' "quick easy" ')
no rows are returned.
In the full text tab under the pubs database, my demo catalog is listed, but the Item count and unique key count are both 1. There are 18 records in my titles table.
The full text files location is on my H drive which is set up as a dependency of SQL Server in cluster admin.
In SQL EM->Support Services->Full Text Search->properties, the location of my temporary files was set to C:winnt empgthrsvc. As nothing in cluster admin can see this directory, I changed it to H: emp but still no data is returned by the query. There is no default error log file listed and I can't work out how to change this.
I have checked the Search service is running under the local system account.
I can't find any error messages which may indicate a problem apart from the fact that the T-SQL query doesn't return any data.
Anyone any ideas? Any help is much appreciated.
Thanks in anticipation.
Claire
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Jul 10, 2006
Hello,
I am running an SAP installation on clustered DELL poweredge 1850's with a shared scsi disk system. I am running Windows 2000 sp4 with sql 2000 sp4. I am trying to restore a database from a .bak file on a clustered disk. When I attempt to access the disk through enterprise manager it is not there. I only get access to the E: drive (which is clustered as well)
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Aug 30, 2005
Hi,I am planning to install sql server 2000 sp4 on my clustered serverrunning in active/passive mode.I plan to stop all sql services using cluster administrator, installthe service pack from the primary node and then reboot all nodes.Are there any missing steps that need to be done or problems thatanyone has come across?ThankLyn
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Aug 1, 2007
We are attempting to restore one of our databases from a backup that went to a local drive on the server.
We see the backupset in the list but receive an error that it is not available when we try to use it. When we try to restore from device and select the files the drive letter is not available. When we attempt to enter the path to the file it can't locate it. We don't have space on our SAN to copy the backup there and we can't add the local drive to the cluster resources.
Is there a way to get this backup done?
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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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Oct 15, 2007
Hi everybody!
I just ran the Database Engine Tuning Advisor on a relative complex query to find out if a new index might help, and in fact it found a combination that should give a performance gain of 94%. Fair enough to try that.
What I wonder about: The index I should create contains 4 columns, the last of them being the Primary Key column of the table, which is also my clustered index for the table. It is an identity integer btw.
I think I remember that ANY index does include the clustered one as lookup into the data, so having it listed to the list of columns will not help. It might at worst add another duplicate 4 bytes to each index entry.
Right? Wrong? Keep the column in the index, or remove it since it is included implicit anyway?
Thanks for suggestions!
Ralf
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Feb 16, 2001
After applying SP3 to to cluster, cluster still displays that it has SP2, is there a way to check for sure which version it has. And what's the appropriate way to install SP3 on cluster.
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May 10, 2004
Many times we see tables with customerID as the PK and clustered but with customerName as null.
So, I try to inforce it by alter table add constraint of AK1_customerName unique for it. However, though the uniqueness is enforced, the display sequence is also 'altered' to be sorted by customerName?
This does not look like right...
-D
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Mar 10, 2004
where can i read more about this things, i can understand what this mean......
thanks
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Jun 12, 2007
Well thank you for answering the last question
Also harsh, i dont know if you remeber me, but i hav got the job at mastek.
Ok now the next question is that.
What is better CLUSTERED or NON CLUSTERED index??.
please also comment on how efficient the combination of clustered and non clustered index works??
thank you
Trust in Technology mate .....'Not in Human Beings'
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