How To Move Transaction Logs On-line?

Jul 4, 2006

Hi all,

I have a database with 20GB transaction log file.
The recovery model of the database is Full.
I need to move the T. log file to a new location with the minimal
downtime.
I know I can do this by dettaching the DB, copying the T. Log and
attaching it at the new location. This will take some time though as
copying the T. log file will take up some time.

I thoght that I could maybe create a secondary T. log file and delete
the primary T. log file.
What does it take so I'm able to delete the primary T. log file? Can
you please explain how to accomplish this?

Also, if you can figure out of a better way, then please let me know.

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How Can I Move Transaction Logs?

May 4, 2000

Currently, my databases and their corresponding transaction logs are all on the same disk array. I finally was able to acquire a seperate disk, specifically to seperate the logs, in case of failure, etc.
Now, I need to figure out how to go about moving the tansaction logs off the current disk array and on to the new disk.
In Enterprise Manager, I brought up "Properties" for the first database, and went to the "Transaction Log" tab. Clicked on the "browse" or "..." button in the location field and got the following message:
"A transaction log file's physical name cannot be changed once the transaction log file has been created". :(

I have been looking through Books On Line, but have been unable to find anything helpful yet.

Can anyone help me figure out how to go about moving a transaction log's location? There has to be some way.
Even if it involves shutting down the server, altering system tables, etc. I need to get these moved.

Your help is appreciated. Thanks.

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Nov 26, 2007

I'm totally new to SQL. I have a SQL 2005 server with 3 sets of mirrors - 1 for the OS, 1 for the logs and 1 for the DB. SQL had already been installed and DB's put into production before I knew the logs and DB's were all on 1 mirrored set. I need to move the logs to their own drive. How do I accomplish this?

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Apr 24, 2002

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Aug 13, 2001

Im having issues truncating my transaction logs. I have logs in excess of 40 gigs. All the info in the BOL is very vague. Any assistance would be apreciated.

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Jun 22, 2000

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Aug 30, 2000

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regards,
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Aug 20, 1998

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I need to move transaction logs to a different drive and am looking for a way to do it without detaching the db.

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Thanks,
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Aug 2, 2004

HELP!!!!

When I look at the Database maintience plan history entry for backup I have a message that reads: "Backup can not be performed on this database. This sub task is ignored".

Have anyone come across this error before?? As part of the Maintenance plan some transaction log are being backup and some aren't instead they receive the message above.

Thanks

Lystra

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Jun 11, 2008

HI All,

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Mar 11, 2007

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Jul 20, 2005

This seems like it'd be a really stupid question, but for the life of me Ihaven't been able to find an answer that works....I have a database that's approximately 400MB when shrunk... and thetransaction logs are at about 4.8GB when shrunk... I can't seem to get thetransaction log any smaller, no what I try. How can I get the log downbelow 1GB and keep it there? I've only got an 18GB hard drive and I need torun 2 copies of this database.-steve

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Jan 8, 2008

Hello,
I am trying to figure out the time a certain store procedure  was executed. I know the SP's name and approximetly the time it was executed. Is this possible to do?
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SQL 7.0 Transaction Logs Won't Shrink!!!

Jun 5, 2002

I have seen quite a few people post this type of problem, but I am finding few solutions. Your advice and/or experiences are greatly appreciated.

Here's my scenario:

Environment: Windows NT 4.0 SP 6, SQL 7.0 (set up for Transactional Replication)

Problem: We have several remote dB machines configured for full recovery. On these machines are several dB's that are capturing aprox. 280 data points per second per unit. (Each dB represents one unit, and we have 21 units) No problem here. The problem is the transaction logs, that obviously grow profusely, will not SHRINK after, backups, dbcc commands and TSQL has been issued in failed attempts to shrink the logs. (in other words we've tried everything)

My questions are:

1. Because we are replicating, is it absolutely necessary to configure dB's for FULL recovery? How do I check in 7.0 if the dB is certainly in FULL vs. SIMPLE recovery mode?

2. I work with SQL 2000 and shrinking files is no problem. How can we shrink these log files in SQL 7.0?

It is rather urgent I find a solution as we are running out of hard drive space on our remote machines. Please help :-(

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Jun 7, 2001

I am having trouble Truncating a Transaction Log. I`ve tried everything in Book Online.
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Jan 19, 2001

Hi all,

I have set up a maintenance plan to backup my databases but when I view the maintenance plan history the transaction log backup steps have a success tick but a message saying :

"Backup can not be performed on this database. This sub task is ignored"

I have looked in my backup directory and only see *.BAK files and no *.TRN.
The transaction logs are supposed to back up at 1AM and the databases at 2AM

All my databases being backed up have the truncate log on checkpoint option set. Is this best practise according to my backup schedule ?

Help !!!!

Regards,

Tim

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Jun 15, 2000

Is it possible to move .ldf's to another drive. For example I would like to move a database transaction log file from C:mssql7data to D:mssql7logs.

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Aug 28, 2000

Hi all,

I am restoring database from Transaction Logs. I followed all the steps
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2. Leave Database Nonoperational But Able to Restore Additional
Transaction Logs.
3. Leave Database Read_Only And Able To Restore Additional Transaction Logs.

Option 2 and 3 aresupposed to set on the NORECOVERY flag.

I tried both options 2, and 3 , But still got messages that I did not
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Can anyone please tell me what I am doing wrong?

Thanks in Advance.

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Jul 11, 2000

I am currently having a problem with a transaction log not emptying even when backed up and truncated. I have done a full database backup and then a transaction log backup expecting this to flush the log however the log is not emptied and it is growing larger and larger. Even when I truncate the log it still doesn't free any space up. Can anybody out there spot the fundemental error in my working??? most grateful. Andy (SQL allegedly)

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May 24, 2003

I am new to sql2k
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pavan

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Aug 20, 1999

I have a transaction log with 22mb of used space and 2,632.50MB of free space. I tried using the following statement to shrink the log and it did not do anything:
USE DB
GO
DBCC SHRINKFILE (DB_log, 50)
GO
CHECKPOINT

Can anybody help me understand what is going on here?

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Aug 11, 1999

I have a MS SQL Server 6.5/SP5A database running on NT 4.0/SP4 Enterprise Edition with MS Cluster Server. On my Production box, I dump the transaction logs every 30 minutes. I need to recreate a point in time on a separate TEST box with the same hardware/software. I created a "DBA database" from a previous night of Production - no problem. However, when I start applying the transaction logs, it complains about being out of sequence. The timestamps that it is reporting are accurate for the transaction logs, but it is basically using the database load time to compare it with. (Granted I am moving from one box to another, but I didn't think this would be a problem). I created a "DBA database" on Production, went through the same steps, and it takes the database load and the transaction logs. I am assuming that the sequence numbers on the transaction logs are identified internally on the file, not per server? Ideas as to why it would complain on an out of sequence condition (Error 4305) when I move to a different box?

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Transaction Logs Full

Aug 31, 2001

when i try to delete the records it gives the errror
suggest me how to deal with this problem
=====
Msg 1105, Level 17, State 2
Can't allocate space for object 'Syslogs' in database
'armaster' because the 'logsegment' segment is full. If you ran out of
space in Syslogs, dump the transaction log. Otherwise, use ALTER DATABASE
or sp_extendsegment to increase the size of the segment.

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Multiple Transaction Logs

Nov 1, 2004

I have just come from an Oracle background and am trying to equate SQL server methodologies to Oracle. I have a couple of questions based on the same principle which is the usage of multiple transaction logs. This is what I have been able to find out from the docs and other posts:

If you have multiple transaction logs they will all be used in a sequential manner before being wrapped around. That is, they will all be filled before they are reused.

My first question is will they be used sequentially or concurrently. SQL Server seems to stripe everything so I am inclined to believe the latter. This question has been asked before but from other posts/docs there seems to be a difference of opinion. I am of course equating transaction logs to redo/archived logs so I want to know categorically (links would be greatly appreciated) as it will have a huge impact on any disaster and recovery plans that I implement.

The second question is a spin off and may or may not be relevant dependant on the answer of the first. If the transaction logs are written to concurrently, that is, entries are striped, why bother with multiple logs? I don't see any benefits. In fact, in a recovery scenario recovering transactions from mutliple striped logs would appear to adversely affect MTTR.

Feel free to point out the errors of my ways as I am all ears and eager to learn.

Thanks in advance.

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Transaction Logs Failing

Nov 5, 2004

All,

I am new-ish to SQL servers, and I am having a real issue with my tansaction logs. I am running a SQL 7.0 server, on a NT 4 platform, with SQL SP4 and NT SP 6a.

I recieve error 4213, which according to the Microsoft website means that a non-logged operation has occured. So, first question, what is a non-logged operation?

I understand that essentially the error is saying that by performing the transaction log it will not be able to restore the DB to a point in time (i.e. the point of a TRN backup), but I am at a loss as to what could have caused this. Any Ideas?

I have scripted the job (which can be seen at the end of this thread), and I don't think that I have done anything wrong, but if you can check it would be most helpful. I have also ensured that the 'Truncate on checkpoint' is not selected.

Please can someone start pointing me in a direction that can help.

Thanks in advance.

Stewart

Script:

set nocount on
declare @dbname varchar(40)
declare @dumplogname char(80)
declare @dumppath varchar (30)

select @dumppath = 'D:MSSQL7BACKUP'

declare dblist_cursor cursor
for select name
from master..sysdatabases
where name not in ('model', 'Northwind', 'pubs', 'tempdb', 'msdb', 'master', 'distribution')

open dblist_cursor

fetch next from dblist_cursor into @dbname

while @@fetch_status = 0
begin
select @dumplogname = @dumppath + @dbname + '_tlog_'
+ cast(datepart(year, getdate()) as varchar(10))
+ replace(str(cast(datepart(month, getdate()) as varchar(10)), 2, 0), ' ', '0')
+ replace(str(cast(datepart(day, getdate()) as varchar(10)), 2, 0), ' ', '0')
+ replace(str(cast(datepart(hour, getdate()) as varchar(10)), 2, 0), ' ', '0')
+ replace(str(cast(datepart(minute, getdate()) as varchar(10)), 2, 0), ' ', '0')
+ '.TRN'

BACKUP LOG @dbname
TO DISK = @dumplogname
WITH INIT, NOUNLOAD, NOSKIP, STATS = 10, NOFORMAT

RESTORE VERIFYONLY FROM DISK = @dumplogname
WITH FILE = 1, NOUNLOAD

fetch next from dblist_cursor into @dbname
end

deallocate dblist_cursor

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Reindexing And Transaction Logs

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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