Number Of Virtual Log Files
Nov 8, 2012
We are using sql server 2008 r2 standard with sp2. I have a 12 GB database in production server, log file was set to 150MB with increment of 10 percent, in last 4 years database size has gone from 2gb to 12 gb. I ran following command
DBCC LOGINFO
And found I have 150 plus rows(which means 150 plus virtual log files)
I increased the size of log file to 25 percent of data file which comes to be approx 3gb and also set auto growth to 20 percent ...
Additional info: we have a log shipping environment in production, i am taking log backups every 15 mins.. still number of virtual log files is same , why is that , how to bring them between number of 25-50 as thats the recommended.
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Oct 1, 2004
I am wanting to reduce the amount of Virtual Log Files I have. In reading through the Online Book Documentation, I realize that I have forgotten to move the Transaction Log Files to a different drive. Now that the server is in production, I wanted to get some input about the best way of making this change.
Can I just change the directory the log files are being written to in the DB properties without having any adverse problems occurring?
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May 20, 2015
Is there a better way to deal with the virtual log files?...I see several approaches in dealing/decreasing the virtual log files for a database..want to know what's the best n safest approach, from the masters here?
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Jun 8, 2015
I am getting this massage in error log .
"Database XYZ has more than 1000 virtual log files which is excessive. Too many virtual log files can cause long startup and backup times. Consider shrinking the log and using a different growth increment to reduce the number of virtual log files."
I am using sql server 2008r2.
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Oct 14, 2015
Any good starting point to understand for a specific db, how many max VLFs are good to have so that it does not cause long startup or backup times?
Also, I need some calculation so that I can identify a best growth parameter I will setup for each database ?
I'm seeing the below msg in errorlog and curious to know the changes (right sizing/growth) to be done? As of now 100 MB of log file growth value is set (refer: [URL] ....)
Database BizTalkMsgBoxDb has more than 1000 virtual log files which is excessive. Too many virtual log files can cause long startup and backup times. Consider shrinking the log and using a different growth increment to reduce the number of virtual log files.
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Jul 23, 2005
To all,How to backup a database into a number of smaller files ?For example, can I can fully backup a DB of 10 MB into 10 files (each 1MB)???The problem I've met is that the DB backup file is too large, over 4GB, and even Winzip can't compress it (after compressing, around 80 %of compression rate is possible)Thanks![color=blue]>From Jason (Kusanagihk)[/color]
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Oct 6, 2007
Hi!
I have a bit of a problem with importing (DTS Package) from a text file into an existing DB.
The file has no column names and every file only contain 1 row. This row varies in number of columns.
My first thought was to create a table with the maximum numbers oc columns that can appear in the text file.
An example:
Table with 4 columns; Col001, Col002, Col003 and Col004
The first text file:
123,Peter,Ocean Street,NY
The second text file:
356,John,Park Avenue
My aim is that the second file should append to the table, leaving Col004 as (NULL)
Any ideas how to get this to work?
Expekt
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Aug 24, 2015
My server has two 8 core processor. Should I use 8 or 16 data files for Tempdb?
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Mar 10, 2008
Hello I have some flat files that contain CSV records with different number of fields but the first 4 fields of each record type are the same of each re. eg there would be an entry of one record that has eight fields and another that has 6 fields. Which of the items in the toolbox can i use to filter the records based on the entry in the first 4 fields so i can process the filtered records.
Thank you
Kenalex
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Feb 2, 2012
I am trying to export the data from a number of MSSQL 2000 tables to UTF8 csv files.
Using the bcp that came with MSSQL 2000 didn't work (UTF8 related), so I am now accessing the 2000 database from within MSSQL 2008 R2 Management Studio and use its Import and Export wizard that does make UTF8 exports possible.
But it fails. This is the error I got for one table.
Code:
- Validating (Error)
Messages
Error 0xc00470d4: Data Flow Task 1: The code page on input column "cmsGUID" (74) is 1252 and is required to be 65001. (SQL Server Import and Export Wizard)
Error 0xc00470d4: Data Flow Task 1: The code page on input column "PublicationStatus" (79) is 1252 and is required to be 65001. (SQL Server Import and Export Wizard) ....
What do I have to do?
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Feb 2, 2015
Database File Placement Layout? We are planning to implement a new SQL Server 2014 OLTP Database with a 1 TB Data file and 1 TB Log File. I am looking at the possible layout of the database files and trying to determine the best possible configuration. My knowledge/research tells me that items which need separate storage due to constant simultaneous access are:
Data files – should go on the fastest reading storage.
Log files – should go on the fastest writing storage.
TempDb – involves a lot of writing at the same time the data files are being read.
Indexes - (including full text indexes) - involves a lot of writing at the same time the data files are being read.
Also, are there any benefit to having multiple OLTP Database Log files? Because SQL Server writes to the log file sequentially, I do not see any advantages to having multiple database log files. In a SQL Server 2012 Class I took last summer, under “Determining File Placement and Number of Files”, it states “Use a single log file in most situations as log files are written sequentially.”
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Apr 23, 2015
SET NOCOUNT ON
Declare @daysOld int,@deletedate nvarchar(19) ,@strDir varchar(250)
declare @cmd11 nvarchar(2000)
declare @mainBackupDir varchar(2000),
@result1 nvarchar(max);
[Code] ....
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Jun 23, 2015
I want to load flat files into a single table. But the flat files can have variable number of columns upto a maximum of 10 columns. The table in my database has 10 columns in it. So in case if I load a flat file having 6 columns then rest of the columns in the table will have nulls. I don't want to use script task for this as I am not good in writing C#code.
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Mar 13, 2015
I've written a custom script to delete backup files from location. But unable to modify now to count the number of files are deleted. How to modify the script...
/* Script to delete older than N days backup from a specific directory */
USE [db_admin]
GO
IF OBJECT_ID('usp_DeleteBackup', 'P') IS NOT NULL
DROP PROC usp_DeleteBackup
GO
[Code] .....
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Nov 5, 2002
Is virtual server the same as creating more than 1 instance of SQL Server?
Thanks!
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Dec 12, 2006
I have a SSIS package that is constantly running out of virtual memory, right now I am on a development server, running only this package. The package is moving data from one table into another on the same server in the same database. The server has 3 Gb of memory and is only running SS2005 and SSIS. I am a local admin on the server and running the package through BIDS, once again for our initial testing. I tried setting the property BufferTempStoragePath to our E drive so it can utilize the 100 Gb of free space we have but that doesn't seem to work either. I have also tried setting the MaxRowSize to many different values to no avail. I am constantly getting an error, see below for exact error, when it gets through roughly half the load. Moreover it reports this error about 500 times in the progress report if I let the package run to completion. Finally, when all is said and done the package has moved the data successfully but the package always shows as failing.
I have googled continuously on this problem but have not found a resolution. I did see on a post here where it was recommended to run the package out of process, however I don't see the benefit at this point when this is the only package I am running. I also don't understand why it would report the error so many times and fail the package when it is completing successfully? Source and Destination have the same number of records at the end of the task. Could someone please try to make sense of this.
Getting Error:
[DTS.Pipeline] Information: The buffer manager detected that the system was low on virtual memory, but was unable to swap out any buffers. 4 buffers were considered and 4 were locked. Either not enough memory is available to the pipeline because not enough is installed, other processes are using it, or too many buffers are locked
Any help would be greatly appreciated.
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Feb 5, 2008
Hi Guys,
Windows XP, IIS 5.1
I have written an installer that creates an MS SQL Database, creates the
necessary data tables and then imports the data into the data tables. All
this works fine.
I now need to copy the web pages to a directory on the users machine and
then make the chosen directory a virtual directory so the user can call the
pages in the usual way (http://localhost/mytestsite/index.html)
Would anyone know how to create a virtual directory using dos command line parameters. I have seen something using "IIsVdir.vbs" but I do not have this script file.
Any help would be really appreciated.
Best Regards,
Steve.
Steve
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Mar 24, 2008
What is a virtual server?In my new job,my boss mentioned about moving the websites from a physical server to a virtual server.Why is this done or needed?
Also he insists that I buy and install SQL server 2000 enterprise edition in my laptop and use the enterprise manager to access their server.Can't I just download the client tools from their SQL package and be able to access their server?Do I need a CAL or is it just enough to have a permission in their network for my laptop?
Can anybody throw some light here please?Thanks!
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Dec 11, 2006
I have one package that is constantly running out of virtual memory, right now I am on a development server, running only this package. The package is moving data from one table into another on the same server in the same database. The server has 3 Gb of memory and is only running SS2005 and SSIS. I am a local admin on the server and running the package through BIDS, once again for our initial testing. I tried setting the property BufferTempStoragePath to our E drive so it can utilize the 100 Gb of free space we have but that doesn't seem to work either. I have also tried setting the MaxRowSize to many different values to no avail. I am constantly getting an error, see below for exact error, when it gets through roughly half the load. Moreover it reports this error about 500 times in the progress report if I let the package run to completion. Finally, when all is said and done the package has moved the data successfully but the package always shows as failing.
I have googled continuously on this problem but have not found a resolution. I did see on a post here where it was recommended to run the package out of process, however I don't see the benefit at this point when this is the only package I am running. I also don't understand why it would report the error so many times and fail the package when it is completing successfully? Source and Destination have the same number of records at the end of the task. Could someone please try to make sense of this.
Getting Error:
[DTS.Pipeline]
Information: The buffer manager detected that the system was low on
virtual memory, but was unable to swap out any buffers. 4 buffers were
considered and 4 were locked. Either not enough memory is available to
the pipeline because not enough is installed, other processes are using
it, or too many buffers are locked
Thank you for your assistance!
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Oct 21, 2007
Hello
I design package Merge 2 tables
Table one contains almost 25 million
Table 2 contains almost 30 million
using lookup component to split record if exist start update else insert as new record every time I start execute get error on lookup component low virtual memory
Kindly if anyone have suggest I will be appreciated
Thanks in advance
Note the 2 tables have PK & IX
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Dec 4, 2007
I have a sbs 2003 sp2 server running exchange 2003 sp2 it was running fine until one day I got this low virtual memory error, I checked the memory usage in the task manager and it is using 7 gigs of virtual memory, I increased the max size from 6 gigs to 8 gigs just to see what happens and now it is using 9 gigs of virtual memory. I don't have any clue as to what the problem is! Please Help!!!
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Aug 17, 2007
I really need some help. This is what I'm trying to do: first of all, i have a PC running Vista. Now on that PC, i have a virtual machine using VMWare Workstation 6, which has Win XP with SP2 installed on it. On the virtual machine, i have Visual Studio 2005 and SQL Server 2005 Express Edition with SP2; now, the thing is, i have a program in C#, which is supposed to connect to a network, but since I'm running on just one PC which is not connected to a network, i instead connect to 127.0.0.1 via port 1433. Now here's where my problems start. At first, i could not connect because i kept receiving an error which said "An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provedier: TCP provider, error: 0 - No connection could be made because the target machine actively refused it.)". A friend of my mine helped, so i did the following: i went into SQL Server Surface Area Configuration (configuration for localhost) , changed the remote connections to allow for both local and remote, using both TCP/IP and named pipes, restarted the database engine, started the SQL Server Browser; then i went to administrator tools, Data Sources (ODBC), and from System DSN tried to add an SQL Server. I gave it a name, and on the server textbox i tried typing "localhost", but doing so, i could not get past the next screen, (i did specify the port as 1433) where i have to chose between win nt and sql server authentication, and neither would work (even though i know the sa password and can log on to SQL Management Studio using that password). Then i tried copying the server name from the management studio, as the server when trying to add the system DSN. That seems to have worked, and i finished ading the SQL Server to the System DSN, using the database which i wanted. But after all these steps, i still get the exact same error as before - "An error has occurred while establishing a connection to the server.
When connecting to SQL Server 2005, this failure may be caused by the
fact that under the default settings SQL Server does not allow remote
connections. (provedier: TCP provider, error: 0 - No connection could
be made because the target machine actively refused it.)".If someone can please help - i've tried everything i can think of - i can access the internet from the virtual machine, i even tried disabling the firewall, but no luck. Is it because of the virtual machine? If so, can anyone suggest a solution? I actually doubt it, because i've even tried to install it on my pc, not the virtual machine, so on vista - and also installed SP1 for VS 2005 and SP1 for Vista, but still the same thing. Sorry for making this post so long, but if anyone can help, i'd really appreciate it. Thanks!
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Apr 22, 2006
I am trying to undertstand how does sql 2005 decide how to use the memory.
Does it use RAM first than the virtual memory or does it decide what to use conditionaly?
Anybody have an idea? Like if the table is really big does it put half
of the table to RAM and the other half to virtual memory ?
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Apr 19, 2001
Say I have 2 servers clustered for SQL. xxxP1 and xxxP2.
Can my SQL virtual server name be xxxP1 or does it have to be something other than the names I called the 2 W2K boxes.
Thanks..
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Mar 22, 2000
One of our clients controls data for about 150 companies. Each company has the same schema and is running SQL Server 7. The maintenence task is horrible. He would like to put all the data in one large database, but needs to control the access, so a user at one company selecting data in a table cannot have access to another company's data in the same table. I thought about using views for each company but that is 150 companies times 100 tables. With Oracle8i you can make virtual private databases. Can this be done in SQL Server 7? Thanks in advance
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Jan 19, 1999
We have a Server that is set to use 80mb of a 128mb machine. The machine is also set to use up to 300mb of Virtual memory as needed.
After running for 10 days, we got the message "Low on Virtual memory". We did some looking and found SQLServer was using 300mb between real and virtual memory.
So the question: Is there a manual method to get SQLServer to release extra memory with out stopping and restarting the service?
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Mar 16, 2004
Hi,
I have the following requirement :
I need to have a way to intercept the SQL queries from an application written in VB and using a ODBC driver and modify the SQL queries before it goes through the ODBC driver and then to the database. This I need to do without modifying the original application.
The solution I have in mind is to write a ODBC virtual driver and configure my application to use my virtual ODBC driver. The ODBC virtual driver in turn will use the actual ODBC driver to the database. The virtual driver will basically intercept the SQL queries, modify it and then give it to the real ODBC driver.
My question is
1. Is this a feasible solution?
2. What should I do in order to implement the vitrtual ODBC driver.
3. Any pointer will be appreciated.
Thanks
Jake.
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May 26, 2004
:confused: Please forgive this elementary question. I have database which has a view that produces the desired records and fields from multiple tables. As I understand it a view is a Virtual Table. My problem is I need to export these results periodically to deliver to a customer. I am running this database on SQL Server 2000 if I right click on a table I have the option to dts the data to a text file but when I right click on the view I do not have this option. How can I make this virtual table an actual table. PLEASE Help Thank You, Ed
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Jan 25, 2014
I am using internet through a dongle connection and every time I connect to internet, the ip gets changed.
1. How to create a database when the ip is not constant?
2. Can I use DNS server ip as database engine?
3. Is there any way to get the system ip?
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Jan 25, 2007
Good morning,
I am looking for some first-hand experiences from fellow DBA's where they had SQL Server running on a Win2K3 VM. What sort of issues (or successes) did you find re: resource sharing, swap files, etc? Are there any experiences where using a VM negatively affected your environment?
Thanks so much. What a great forum!
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Jul 23, 2005
I have two instances of SQL Server running on my Development machine.I am having some performance problems and while investigating theproblem I saw with the Process Explorer form Sysinternals that bothinstances consume each 800 Mbytes of memory!I experimented with sp_configure and by giving both instances a fixedmemory size. Both methods do not seem to have any effect.Can anybody explain me why SQL Server is using so much memory?Thanks for any information.Evert WiesenekkerPSBesides the northwind database I only have one simple extra database(70 Mb in size) installed.
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Jul 23, 2005
I've been discussing here a SQL 7 view which scrolls slowly when linked toan Access 2000 MDB. After trying various things, I've distilled it down tothe following: when the linked view has a virtual primary key, it is slow;when there is no virtual primary key, it scrolls quickly.Looking at Profiler, I see that when there is no virtual primary key, Accesssends a simple select command to SQL Server. However, when there is avirtual primary key, Access gets a list of primary key values, and then usesthose values to get records from SQL Server in groups of 10.This may account for why the scrolling is slow when there is a virtualprimary key. However, I wonder if there's any way to improve performance orotherwise work around this apparent bottleneck.The MS literature says that creating a virtual primary key will not affectperformance. However, since different methodologies for obtaining data areused with and without the virtual primary key, it seems that it does affectperformance, and certainly does in this situation.Thanks,Neil
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Jan 17, 2008
I have 2 clusters I am reducing to 1 cluster with 2 instances. In order to save programming time I need to rename the sql instances to use the old names after the old servers are removed from the network. I plan on changing the IP address to match the old servers. Can this be done ?
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