I've been asked to write a script to monitor whether a clustered server is up and alive and if so which node it's actually running on. Apparently there's been some problems of failover to the passive server without anyone knowing that it happened and they want to know. Any suggestions?
View 9 RepliesWhat are the events to be monitored for a Active/Passive Cluster?
View 4 Replies View RelatedI'd like to find out how people handle monitoring the disk space used and available per database across all of their databases and severs. The information returned in sp_spaceused is what I'm looking for, but it is for one databases only. How is everyone managing many databases on many different severs?
Are there scripts or tools available for this? Has anyone written any vb code using SQL-DMO?
Thank you for your help...
Hi all,
I've been digging around the last few days, looking for the best way to monitor all the jobs on all my prod servers. Using EM or SSMS is BS. I've been thinking that perhaps the best strategy is to write or modify a script that gathers information from sysjobs and sysjobhistory on all servers and then inserts it into my main DBA database on my "admin" server. Of course this script would have to be on all servers and be in a scheduled job itself. I'm thinking that I should probably categorize every job in the company and break out my reports that way too. I'll probably throw all the data into a cube so I can do some at a glance checks to see that everything is running ok. I'd like to trend run times with the data too.
Anyway as with most fun projects there are many different way to accomplish this. I've hit on one above and I've seen several others. What are some of the solutions you guys have come up with, what have you tried that didn't work so well and what are some pitfalls that I should avoid in setting this up?
Cat
I am trying to install failover support for my sql server 7.0 database on the in clustere server enviorment
Now We have operating system on two clusterd servers but just one common database disk
Now what will happen if i lose server A ( Active ) the server B will take over and use the same database . But what will
happen if database disk crashes IS it possible for me to replicate the data or use disk mirroring , or have one clustered
database server seperate
How does the database server cluster work ?
What kind of replication do i use for my backup support ?
what should be my recovery process ?
how can i use standby option on the database during recovery ?
Please try to reply as soon as possible
if you can also point to some documetation on the net that will also help
Also look at my current structure ( but this should not affect your answer )
Tables
group 1 --- 20 tables ( being replicated to server c )
group 2 ----60 tables
on cluster 1
Server A-- Holds Group 1 ( Transictional replication to server c )
on cluster 2
server B---(Production server ) Group 2 + Group 1
Hi All,
Just want to know if we can replicate data (Transactional Replication) from a clustered servers (server A and Server B are active-passive clustered running SqlServer 7) to another server C running SqlServer 7.
If yes, how to go about doing this. Any white papers, KB articles or books out there which will walk through the steps to do it.
Appriciate any help.
Thanks,
Sri
According to Microsoft, if you need to change the subnet for the clustered servers, you will need to either edit the registry or reinstall virtual SQL Server.
Does any one know which registry key(s) store the subnet information? I was reviewing the clustered key but was able to find the key for the IP address only.
Thanks ...byyu :D
Is it possible to use registered servers feature in clustered environment and with different versions of Sql server like 2012 & 2014.
View 0 Replies View RelatedHello,Being a bit of a SQL Server novice, need some advice with the followingsituation.Server A and Server B have SQLServer 2000 based databases. The vendorof the application/system has implemented their own replication processto ensure the 2 databases are in sync. However, there is no clusteringwith virtual IP addresses implemented. So to an external client/db, itis 2 identical databases with the same name on 2 distinct servers.We need to develop an application that will reside on a networkedserver C and with SQLServer 2000 as well. While most of the tables inthis database are self contained, around 10 tables will have to bemirror copies of the same tables from either Server A or Server B.Question, how do we implement subscription based replication on top ofa redundant database, when no clustering is implemented? So, inessence, when Server A is alive, the database on Server C willperiodically (or on change) replicate the 10 tables from Server A. WhenServer A is not alive, it needs to do same from server B. (When bothserver A and B are alive, it is acceptable to get data from either,since they are synchronized internally).Any alternate suggestions on achieving this functionality are welcometoo. If SQL Server 2005 has some capabilities that may address thisproblem, that is a consideration as well.Thanks
View 1 Replies View RelatedI've run into a problem attempting to change my service account on the clustered servers from an administrative account to a non-privileged account under SQL Server 2005 Enterprise Edition. When I change the login properties in Configuration Manager I get the following error:
"The user already belongs to this group"
I'm then prevented from making any changes to the service account. I don't know what I'm supposed to do at this point to resolve the problem, so any assistance will be greatly appreciated.
I have 4 servers, 2 each for application (Dev & Prod)
DEV 1 & DEV 2 are standalone serversÂ
Prod 1 & Prod 2 are Windows Clustered Servers.
From one application to other we do Distributed transactions. Dev 1 - Dev 2 or Dev 2 - Dev 1 can start DTC and working fine,but issue comes when Prod 1 - Prod 2 or Prod 2 - Prod 1. I get error message OLE DB provider "SQLNCLI" for linked server "xyz" returned message "No transaction is active.".
Msg 7391, Level 16, State 2, Line 3
The operation could not be performed because OLE DB provider "SQLNCLI" for linked server "xyz" was unable to begin a distributed transaction.
I have tested Dev 1 - Prod 1, Dev 1 - Prod 2, Dev 2 - Prod 1, Dev 2 - Prod 2 everything is working fine only Production servers are causing issue.
I enabled all settings needed for DTC on Cluster MSDTC service but no luck.
Hi,
We've had this issue for awhile, but I have not been able to find a resolution for this. We have 2 identical servers (hardware & software) set-up: IBM x3850-(88633RU) running Windows Server 2003 Enterprise x64 (5.2.3790 SP1 Build 3790 R2). Server A was running SP1 (Build 9.0.2047) on a 3-node active-passive-passive failover cluster. Server B was running SP2 + Hotfix KB933097 (Build 9.0.3152) on a 2-node active-passive failover cluster. Both these servers are heavily utilized, and when originally installed with these versions of SQL Server Enterprise 2005 experienced no issues during or post-install. The original install of SQL 2005 Enterprise on both these servers had the Cluster Group Selection "Data files" setting changed to "M:MICROSOFT SQL SERVER" so that all system dbs and binaries would be installed to that location. On Server B where SP2 had already been applied, the update was downloaded on May 1, 2007, well after the GDR issues which had been plaguing SP2 releases was supposed to have been resolved.
Our problems began the night when we tried to apply hotfix KB933097 on Server A, and cumulative update packages 1,2,3 on Servers A & B, as well as catch-up the same SP2 and hotfix packages on other non-clustered servers where default system db locations remained the same. On all servers other than Servers A and B, the installs proceeded smoothly and without issue.
On Server B, which was already running SP2 + Hotfix KB933097, we tried installing Cumulative Update Package 1 (Build 9.0.3161) on the primary node. The install proceeded until the following errors were encountered:
"[Microsoft][SQL Native Client][SQL Server]Cannot find the object 'dm_exec_query_resource_semaphores', because it does not exist or you do not have permission."
"[Microsoft][SQL Native Client][SQL Server]Cannot find the object 'dm_exec_query_memory_grants', because it does not exist or you do not have permission."
After this, the setup finished with the message "Product: Microsoft SQL Server 2005 (64-bit) - Update 'Hotfix 3161 for SQL Server Database Services 2005 (64-bit) ENU (KB935356)' could not be installed. Error code 1603. Additional information is available in the log file C:Program FilesMicrosoft SQL Server90Setup BootstrapLOGHotfixSQL9_Hotfix_KB935356_sqlrun_sql.msp.log."
We rebooted the server and tried several times to reinstall the hotfix as sa and as the database service account with full windows and sa credentials, each time with no success, and rebooting between retries. All other components were installed successfully. We were hesitant to try uninstalling the hotfix, since it was unable to be removed successfully in previous attempts. However, when I connected to Database Engine using Management Studio, I found that the version of SQL being reported was in fact Build 9.0.3161! Everything also appeared to be running properly.
I tried to to Google the answer, but could only find information as applied to SP1 when system dbs master and mssqlsystemresource were located on different locations (http://support.microsoft.com/default.aspx?scid=kb;EN-US;918695 ). I had already verified that all system dbs, including the ones mentioned, were originally and currently located together on M:Microsoft SQL ServerMSSQL.1MSSQLData.
Finally I contacted a fellow DBA who advised me to continue installing all the other hotfixes, and then compare all SQL files against other servers where the install succeeded to ensure all system files were updated correctly (matching file sizes and datetime stamps). Since we were depending on a fix in Cumulative Update Package 3 to fix a critical log-shipping security issue, I went ahead with the rest of the installs, getting the same error with each package, rebooting between each install.
We found after the final install that the mssqlsystemresource files in the M:Microsoft SQL ServerMSSQL.1MSSQLData
directory were in fact updated after each install with a new timestamp, and that all files in C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBinn matched on both file size and timestamp. The log-shipping security issue we were looking to fix also appeared to be resolved by the last update.
On Server A, which was running SP1 (Build 9.0.2047), we installed the same SP2 package as we had on Server B with no issue. We rebooted and then tried to apply the same Hotfix KB933097 (Build 9.0.3152) that had been applied successfully on Server B and found to our surprise that the same errors were being generated here as well. We continued to apply the rest of the hotfixes so that both servers matched software updates. Comparing the above directories showed that files seemed to have been updated, even though database services appeared to be not installed.
It looks like we now need Cumulative Update 5 hotfix package in order to deal with WMI alerting issues, but I'm afraid to apply it until we have a known resolution for the past errors.
Since this issue was supposed to be resolved by SP2, I'm not sure why these post-SP2 hotfixes should fail. It seems to me to be an issue of the directory location of the system files which is in question.
I can post the hotfix log files as well, if anyone is interested in seeing them.
Any help would be greatly appreciated. As well, does anyone have any idea when SP3 is scheduled to come out? I really don't like applying hotfixes which are usually untested for general purposes, and it seems Microsoft is delaying this in favour of releasing SQL 2008.
So is there something I'm supposed to configure to allow activation to fire after a cluster failover. We have had three where I have noticed that activation does not automatically fire back up. i have to alter the queue to get it going. None of the values on sys.service_queues imply that is disabled, but messages just keep stacking up into the queue and are not being dealt with. Once I alter the queue to turn activation on; everything takes off and starts working normaly.
Obviously, this is less than desireable for an environment that requires High availability.
Regards
We have a number of databases in our company and we recently had to buy a second SQL server. What I would like to do is have both SQL Servers act as failovers for each other. They both are the exact same hardware configuration (dell blades poweredge 1855) and we have a RAID array with Melio clustered file system for our web servers. I haven€™t found any documentation on if this is even possible. Am I completely wrong in thinking this can be done or is there a better solution to spread the load but provide failover support with out buying 2 new machines?
View 1 Replies View RelatedI'm thinking of setting up clustering and have a basic failover question that I can't seem to find and an answer.
I want to setup two sql 2005 std ed servers and have them clustered. When the servers are running are they both taking requests (load balanced) or is only one server taking requests and the other being updated, waiting for the first server to fail. If this is true, if/when the first server fails does the second one step up automatically?
I couldn't find any resources that answered these seemingly beginner questions. I'm more than happy to read so if you know of any articles/books I'd appreciate that as well.
thanks in advance,
Scott
We are in plan to build a Monitoring tool using PowerShell and Performance Monitor which could monitor 10 to 20 servers. Do you have any reference of any existing tool using Performance Monitor to monitor the SQL Server and available for free? I didn't want to put some effort, if something is available already.
View 2 Replies View RelatedWe 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.
View 4 Replies View RelatedI 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]....
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?
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
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.
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
What is the easiest way to remember the definitions of clustered and non clustered indexes.
View 9 Replies View RelatedI 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".
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
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...
View 3 Replies View RelatedI 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>?
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?
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?
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?
View 2 Replies View RelatedI have a report that was designed using SQL Reporting Services that sits on a SQL reporting server. It's nothing too exciting, it is essentially a three page application with legal jumbo on pages 2 and 3 and applicant data in fields on page 1.
We use rectangles to force page breaks to page 2 and to page 3.
When running the report on the report server, it shows and prints fine.
When running the report from the QA website internally, it shows and prints just fine.
When running the report from the production website from a machine internally, it shows and prints just fine.
When running the report from outside of the company network, the report is jacked. It obliterates large chunks of text, crams text together, and creates blank pages.
I need help in determining where I even begin with trouble shooting this!
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] ....
Does creating both a Clustered and Non-Clustered on the same field increase performace or decrease performance?
Or having either one is enough?