Reindexing On A Mirror Environment
Oct 18, 2007
All,
I've got a medium sized database in a mirror configuration with witness. The database size is about 300gb and I would to reindex all of the tables in the database. My process would go something like this:
1) Backup principal
2) Break the mirror
3) Set the principal database to simple recovery mode
4) Perform the reindexing
5) Backup the principal and transfer that backup to the mirror
6) Restore the backup
7) Re-establish the mirror
Does anyone see any issues with the process itself?
Regards,
Ian
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Jun 14, 2015
I am using SQl Server 2012 Database Mirroring with around 40 gb as mdf and 1 gb as ldf. Now my ldf size increased . How to reduce ldf size while mirror enabled with mirror server and witness server. Can shrink the ldf with mirror enables.
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Nov 16, 2005
I have finished a change request from our client. I need to update clients' database with the one in developments.Here is the changes i made to database:Added/Changed some tablesAdded/Changed some stored proceduresAdded data to some dictionary tableThe data in clients' current database MUST be kept. So how can I merge the changed information to clients' database?
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Jan 31, 2008
After adding the Witness Server to the Mirror session, the Witness Connection state between the Mirror and Witness Connection is Disconnected and the state between Principal and Witness Connection is Connected.
The procedures defined in Books Online was used to setup Database Mirroring...when the Witness server was added to the Mirror session, only the alter database T-SQL statement was executed on the Principal server.
ALTER DATABASE <db_name> SET WITNESS = 'TCP://<servername>:<port>'
After executing the above statement, a few seconds later the state between Principal and Witness Connection changed to Connected and the state between Mirror and Witness Connection remains Disconnected.
The Mirror session is not using Certificates, every server is on the same domain, using the same domain login account, and all servers have SP2 installed running Enterprise Edition.
Any idea's why the state between Mirror and Witness Connection remains Disconnected?
Thanks,
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Dec 27, 2006
I was trying to test mirroring and now would like to delete the mirror database but it says I need to remove database mirroring first. I deleted the endpoint and cannot figure out how to remove the mirroring. Can someone please help.
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Apr 15, 2002
Attempt to fetch logical page (1:166354) in database 'pm_pmc_prod' belongs to object '837120', not to object 'ng_visit'.
I got his error while importing data into the error, when i ran dbcc checkdb it gave me Msg 8928,8942,8976 etct witl serverity level 16...
is it possible to fix this curropt tables?
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Jun 22, 1999
We load tables from text files for inquiries.
My procedure is to truncate the table
Use DTS to move the text file into the table
do the command DBCC DBREINDEX (TABLE,'')
Am I wasting my time?
Does SQL 7 rebuild the indicis as it loads the data from the text file?
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Aug 16, 2006
Hello guys,
Two things:
1) Could somebody explain me how to reindex all tables in my db?
2) How do I know when I should reindex my db?
Thank you very much for any help!
Regards,
Fabian
my favorit hoster is ASPnix : www.aspnix.com !
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Sep 17, 2001
I've just recently tried to perform a scheduled reindexing job with the following command:
EXEC sp_MSforeachtable @command1="print '?' DBCC DBREINDEX ('?')"
Unfortunately, this command has only finished once of the five or six times I've tried to run it. The times it has failed, it deadlocks behind what seems to be a succession of other transactions. How can I make sure this command finishes?
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Dec 27, 2002
Hello Everyone,
I need to rebuild all indexes in one table, is there any command that will do automatically instead of deleting and recreating them all?
Any help will be appreciated.
Thanks
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Nov 15, 2007
Hi All,
is it really improve performance that making table reindexing?
what i mean to say is i've one script, which will automatically drops all the indexes in a database, and reconstruct them with the same name.
is it really worth doing that?.....
thankyou very much
Vinod
Even you learn 1%, Learn it with 100% confidence.
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Oct 18, 2007
All,
I've got a medium sized database in a mirror configuration with witness. The database size is about 300gb and I would to reindex all of the tables in the database. My process would go something like this:
1) Backup principal
2) Break the mirror
3) Set the principal database to simple recovery mode
4) Perform the reindexing
5) Backup the principal and transfer that backup to the mirror
6) Restore the backup
7) Re-establish the mirror
Does anyone see any issues with the process itself?
Regards,
Ian
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Dec 27, 2007
Hi experts,
For defragmenation and reindexing they are using the below cursor, and now they have asked me to remove the cursor and schedule the job accordingly to do the same functionality, so what will be the other way we can do without cursor? can you plase let me know the solution?
DECLARE @Database VARCHAR(255)
DECLARE @Table VARCHAR(255)
DECLARE @cmd NVARCHAR(500)
DECLARE @fillfactor INT
SET @fillfactor = 90
DECLARE DatabaseCursor CURSOR FOR
SELECT database_name FROM dbadmin.dbo.tdbstatus WHERE status='y'
AND database_name NOT IN ('master','model','msdb','tempdb')
ORDER BY 1
OPEN DatabaseCursor
FETCH NEXT FROM DatabaseCursor INTO @Database
WHILE @@FETCH_STATUS = 0
BEGIN
SET @cmd = 'DECLARE TableCursor CURSOR FOR SELECT table_catalog + ''.'' + table_schema + ''.'' + table_name as tableName
FROM ' + @Database + '.INFORMATION_SCHEMA.TABLES WHERE table_type = ''BASE TABLE'''
-- create table cursor
EXEC (@cmd)
OPEN TableCursor
FETCH NEXT FROM TableCursor INTO @Table
WHILE @@FETCH_STATUS = 0
BEGIN
SET @cmd = 'ALTER INDEX ALL ON ' + @Table + ' REBUILD WITH (FILLFACTOR = ' + CONVERT(VARCHAR(3),@fillfactor) + ')'
EXEC (@cmd)
FETCH NEXT FROM TableCursor INTO @Table
END
CLOSE TableCursor
DEALLOCATE TableCursor
FETCH NEXT FROM DatabaseCursor INTO @Database
END
CLOSE DatabaseCursor
DEALLOCATE DatabaseCursor
Your help will be appreciated.
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Mar 24, 2005
In the Enterprise Manager of SQL Server 2000 I have set up a maintenance plan which rebuilds my indexes. I've stuided the documentation, and from what I've learned what happens behind the curtain is that several DBCC REINDEX commands are being issued.
Question:
If I have 20 tables and 40 indexes: Will SQL Server do the maintance plan in 1 single transaction, or will it divide the it up to eg. 20 or 40 transactions?
-h
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Nov 22, 2004
Hi
We are upgrading from sql 7 to 2000.During the upgrade process do we have to do a reindexing of all tables or will update statistics take care of that.
Or do we have to do both?
What is the difference between reindexing and update statistics.
Thanks
Madhukar Gole
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Dec 14, 2004
Hi All,
Just after some feedback on a scenario where we have full logging setup on one of the databases, and the transaction logs are backed up every 60min. At 0000-0100 the log jumps from being a few thousand k up to over 1.7gb.
I did some profiling for this time, and it appears that this jump is related to the reindexing of the indexes on the database.
Is this normal for the log file to jump in size so much? Or is this an indication of some other issue (potentially with the indexes)?
Is there any way that the reindexing can be excluded from the log files or is this a necessity?
Thanks in advance for your help.
Cheers
Troy
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May 27, 2008
hi
i have reindex of the tables
is it really improve performance that making table reindexing ?
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Jul 23, 2005
Folks,I work on a system which is growing rapidly, with the number oftransactions we process growing on a daily basis. While this is goodnews or the business, maintenance is starting to become an issue as thedatabase is the backend for a website which cannot be down for alengthy period of time.While I do defrag the indexes, periodically the indexes do need to berebuilt. When this happens, the process locks pages and transactionsstart getting bounced out.Are their any third party utilities which will rebuild an indexwithout this locking occuring? Any help in pointing me in the rightdirection would be appreciated.
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Apr 30, 2007
Does someone know if doing a reindex on a clustered or non-clustered index cause the snapshot file to grow? In other words, is the data that makes up the snapshot copied from the source to the snapshot database? If a normal reindex is done on the underlying database, will it block users from acessing the snapshot? Any help would be appreciated.
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Sep 5, 2006
I need to reindex all tables in my database and would like to do this without using a Cursor. What is the simplest way to achieve this.
Cheers
Nat
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Apr 25, 2008
Hi,
We have scheduled a job for DB Reindexing (Maitinance Plan) for a OLTP database on sunday.
We have used mirroring for automatic failover with a witness server now the DR Reindexing job fails after 30 mins without any error.
Please let me know why Database reindexing gets failed.
Regards
Sufian
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Nov 3, 2005
Hello,
I'm looking for the query command that will go out to all the user Tables and will tell me what Indexes need to be reindexed.
We are having a problem with some of the tables and we don't know when our tables need to be reindexed other than when operations are stopped for our company.
Thanks,
Ron
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Jul 18, 2007
Hello. When reviewing the DBCC SHOWCONTIG immediately after reindexing all indexes on a database, I see the ExtentFragmentation has values like 50 to 70%... These are SQL 2005 tables with clustered PK's, no large varchars/blobs, and at least 100 pages in the index... The numbers related to PAGE fragmentation are ok after reindexing, but not the EXTENT fragmentation numbers.
I noticed the drive is in need of being defragged at the disk level. Is that a reason why reindexing doesn't fix the Extent frag numbers?? ANy other ideas on this? I can try defragging the DISK over the weekend, bringing the database offline then, but any other thougths on why the Extents show these high %'s? Is there any command to reset them and maybe that isn't happening? Like must I do update usage to get valid Extent frag #'s??
If there were MANY autogrows on the files, is that a different level of fragmentation? and how could all those small pieces of files be pulled back together? Thanks, Bruce
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Mar 15, 2006
We have a new server that is 64-bit and I have been approached about using the old 32-bit SQL Server (after a complete format and reinstall) for a mirrored server.
Either that, or buy a new Server with less power that would be used in times of need.
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Dec 7, 2007
I have two sql 2005 servers. I want to do mirroring. My question is does mirroring supports store procedures, ssis packages, user log in ids also? I know mirroring supports database level. In this case, mirroring should supports sp and indexes also. Am I right?
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Jun 21, 2007
My client wants to provide a redundant server at a remote location. They want to have db access in a worst case "building burns down" scenario. Can I use mirroring to a remote location? Do I want to use mirroring to a remote location? What happens to my mirror set when some knucklehead with a backhoe digs up my high speed cable?
Am I better off, in this case, sticking with log shipping and manually bringing up the stand by server?
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Dec 19, 2006
Hi all,
I feel happy to post my first thread at dbforums.com, and I think it's the community of DB professionals.
my question is:
I have two servers in my organization, one of them is running an SQL server database. Is there any way to make the second server a mirror of the first one and to make it runs automatically as the main server when the first server is down?
Thanks for replying soon.
Haytham
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Aug 6, 2007
Hi folks,
I am creating an external database for a legacy application and one of the requirements is that every table has to be declared twice in the database:
TABLE_READ and TABLE_WRITE.
Now the idea is that as soon as a change is made to TABLE_WRITE, these
changes should be reflected in TABLE_READ.
Now there are dozens of these tables, and I dont want to have to go
through and write AFTER UPDATE/INSTERT/DELETE triggers for all of
them. Is there an easier way?
- can you use replication within the same database instance (ie, replicating tables instead of instances)
- some kind of table mirroring within a single database?
- is there a good solution using tsql/stored procedures?
Thanks in advance,
Alex
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Feb 20, 2007
Hello All!
I have a very simple question.
Im studying for 40-431 and just finished reading about Log Shipping.
It says in the book that when using Log Shipping you cannot run any other log backups because that would affect the LSNs. Can one do log backups with mirroring - principle and mirror?
Because mirroring uses log to keep the mirror up-to-date and synchs on LSN.
Thank you
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Jun 21, 2007
Hi,
I've got a problem with the DB mirroring in SQL 2005.
Configuration:
Server 1 Name: ABC001 NIC#1: IP 10.1.1.1 no DNS Server, no Gateway NIC#2: IP 192.1.1.11
Server 2 Name: ABC002 NIC#1: IP 10.1.1.2 no DNS Server, no Gateway NIC#2: IP 192.1.1.12
NIC#1 is an cross-over between the 2 server, NIC#2 is related to the local network.
I cannot setup the mirror with the built-in tool nor by hand.
With the tool I receive the message:
"
One or more of the server network addresses lacks a fully qualified domain name (FQDN). Specify the FQDN for each server, and click Start Mirroring again.
The syntax for a fully-qualified TCP address is:
TCP://<computer_name>.<domain_segment>[.<domain_segment>]:<port>
"
By hand with (Endpoints are ready, added by the tool):
-- Specify the partner from the principal server
ALTER DATABASE [MyDB] SET PARTNER =
N'TCP://ABC002:5022';
also
ALTER DATABASE [MyDB] SET PARTNER =
N'TCP://10.1.1.1:5022';
makes a problem like "other server cannot be reached"
I can ping the other server and use windows sharing. I have create an host entry for ABC002 to use the NIC#1 alltime.
Has anyone an idea how to resolve this?
Thanks!
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Feb 21, 2007
Hi,
Trying to build an replication and subscription beteween db in SQL 2000. The db holds our business system (Dynamics NAV, earlier Navision) and several of the tables include $, spaces and even :
We can take some of this away when creating a new db or make scripts for some actions but I wonder if the mirroring in 2005 could handle this?
Thanks,
Mikael
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Jan 26, 2007
Im pretty new to DBA world
We have a SQL2005 Standard setup with mirror and witness
I create a Database in the Principle, create a SQLLogon account and give it permission to the database. All works.
I then fail the databse over to SQL2 and the database is there, it has the SQLAccount I create at the database level, but a logon does not work. I notice there is not login account at the database level and If I attempt to create one, I am told there is one already. I try to assign permission to that account for the database and it again replys that there is already on.
Is this refered to as an orphaned logon?
I was a post on Moving logins from on server to another, is that what I must do?
THank you
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May 30, 2007
I have a question and excuse me if I look dumb ... but I can't MIRROR MASTER or other dBs. If I lose the server then (primary) ... will the db still be open? do I not require some of these non-mirrorable database to run?
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