SQL Server Admin 2014 :: Log File Size And Log Space Used (Percentage)
Jul 7, 2015
While i execute dbcc sqlperf(logspace); I get following values.
Database NameLog Size (MB)Log Space Used (%)
master 16.17969 13.30275
tempdb 7.429688 61.7245
model 0.7421875 45.78947
msdb 5.554688 25.87904
distribution 2808.93 0.8172179
BANKDB 23438.87 48.20037
WSMIRSDB 109.7422 4.839111
For database BANKDB , Log Space used(%) is 48.83% and Log size is about 23438.87 where as my database size of BANKDB is 60 GB. FULL database and Log back is done every day night one time. My database is performing slow now.
Do we need to take log backup frequently like once a 1 hour so that Log space used will be less. Same query is taking more time to execute than before in same database is it because of log file has increased.
I do index organize and rebuild once a week and stats apply nightly.
Is it correct once log space size is increasing more than 10%. Do we need to take log backup?
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Mar 2, 2015
I have 10 Gb index and disk space only left 5gb .
How can i rebuild index ?
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Nov 21, 2013
We have deleted 120GB of data but space did not released even after 2 days. Is there any reason for this? tell me how exactly it releases the space after truncating a 120GB table?
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Jun 11, 2015
How do i find Total allocated space and used space of a memory optimized filegroup?
use memory_optimized_db
Go
select (SUM(size)*8.0)/1024.0 as Space,
FILEGROUP_NAME ( data_space_id ) , type_desc from sys.database_files
group by data_space_id,type_desc;
above query gives "current used size of the container " of memory optimized file group but doesn't give Total space detail.
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Sep 15, 2015
I'm trying to determine how much space I would need for my data drive and log file drive to do index rebuild. I have a database which is 100gb, it is in simple recovery mode. let me know what to have a look at to determine how much space.
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Sep 13, 2014
I've been fixing some issues lately where weekly maintenance has been causing logs to grow and filling disks.
Is there any rule of thumb for allocating log space for doing reorgs and rebuilds in a worst case scenario? I'm thinking 3x the largest database size?
I've been watching them run on databases in the range of 50GB where the logs are growing well over that for rebuilds or even reorgs. Once you have a few databases like this on a server, you can suddenly eat through a lot of disk space just for holding logs during maintenance.
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Aug 14, 2014
I'm aware of the issues with sizing your logfile growth size too low (causing too many VLFs, etc). But I haven't seen much about the datafile side of it.
Are there any benchmarks specifically on setting datafile growth so low (on databases 1-100Gb in size)? Are there circumstances in well utilized servers where that might be warranted?
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Mar 25, 2014
From BOL, I see these remarks with respect to the MODIFY FILE subcommand (my underline added):
Initializing Files
By default, data and log files are initialized by filling the files with zeros when you perform one of the following operations:
Create a database
Add files to an existing database
Increase the size of an existing file
Restore a database or filegroup
Which leads me to believe that expanding the size of a datafile will also wipe out (my definition of 'initialize') any existing data within that file.
I may be misunderstanding 'initialize', because when I tested it out, I found this wasn't the case - my table data written to the file was still there after a resize.
Need to clarify to what degree I'd be taking a risk by increasing the file size on a datafile which already has data in it.
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Jul 20, 2015
I am having an issue in determining the correct size of a table.
I have a tableA in some DB on transaction server (Enterprise Edition), this table is being replicated in reporting server DB (Standard edition).
When I check the space used by this table in both the databases i see noticeable difference.
I am using EXEC sp_spaceused 'tableA' to determine the space.
Transaction Server
------------------------------------------------------------------------------
name rows reserveddata index_size unused
TableA1439999 695416 KB507048 KB182912 KB 5456 KB
Reporting Server
-------------------------------------------------------------------------------
name rows reserveddata index_size unused
TableA1439999 656904 KB483664 KB172680 KB 560 KB
So I wanted to know what could be the possible reasons for this difference ?
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Feb 28, 2015
what is the maximum size of a DB hosted on SQL 2012 cloud environment?
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Jun 10, 2014
It is possible to find table size and in that table each row size.
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Jul 6, 2015
For a database, we have 4 data files in a particular file group and the file sizes are almost 70 GB each.
Do I come across any performance issues if I create/pre-allocate an additional data file in the same file group so that the existing files don't grow too much?
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Apr 27, 2015
In a server we had File Growth,And then We had to Add New Hard Drive And New File On It.And Now We have New server with a Huge Hard Drive.But all files remaind.Can I Reduce This files to One data file or not ?
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Mar 21, 2014
My sql databases in SQL Server 2014 has the status "suspend" as I saw in SQL Management Studio. I can't restore to serviceable condition sql databases through standard procedures. I need to restore .mdf file.
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Feb 26, 2015
my 4 GB .OST file is corrupted and i am not able to access my mails and contacts.
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Nov 7, 2015
A log file size of a production database has been increase from 4gb to 150 gb initial size.Now i want to find when it will grow & how much it grow & which transaction is responsible for this.
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Jun 25, 2014
I have a database it is 50 gb with hundreds of columns. I would like to choose a certain column and convert the data in it to .csv or excel file. How can I do that I am very new to MSSQL...
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Jul 23, 2014
I had to reinstall my local copy of SQL a few weeks ago, which naturally overwrote the
msdb.dbo.sysmanagement_shared_server_groups_internal and
msdb.dbo.sysmanagement_shared_registered_servers_internal tables.
However I still have the local XML file that SSMS reads so I can still access the groups, I just get weird errors when trying to re-register my install as the new CMS. How to rebuilt those tables from the XML file or know of a way to repopulate?
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Nov 10, 2014
We have one table where we store all documents in one of the column called "Doc" with varbinary(max) data type.
We want to download those documents from sql table to windows explorer and i wrote BCP in sql 2005. And things were fine.
The format file I used there looks like this,
9.0
1
1 SQLBINARY 0 0 "" 1 Doc ""
Now we are in 2014 and when I try the same code with same format file, it hangs in the middle. So I changed the file to 12.0 instead of 9.0 but still not working.
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Oct 19, 2015
is there a way to restore all file groups except one? example: Database A has 10 filegroups, but 1 of them is defunct, so i cant delete it and there's no backup for restore it.Can I create a new DB restoring the 9 good FGs from a database A's backup?
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Apr 8, 2014
What is the use of creating manifest file in SSIS... because I was schedule a job and its not needed and manifest file then why we are creating this.
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Jan 10, 2015
I have a windows 8 pc that I just got and installed sqlexpress 2014. My buddy haw windows 7 and installed sqlexpress on his pc. We create a db on his pc, did a backup, copied the backup to my pc. In ssms I right click on "database" > restore database. click device and the button to find my file. I navigate to the folder where the file shows in file explorer but the .bak file does not show in ssms to restore from. This is probably a windows thing but I have don't know what to look at.
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Jan 21, 2015
I was running an operation to shrink file/emptyfile a data file, and then remove it.
It blocked and caused a huge mess, I suspect on the removal part. But I want to confirm that the emptyfile completed (and that the engine isn't going to try to put more data in there for when I schedule the removal part again a week or more from now).
How does the engine know not to put any more data in there, and how long does that situation last?
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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 30, 2015
I recently installed standalone version of SQL 2014 Standard on my work computer. I used Access before but I want to use a SQL server instead.
We have a shared drive that a file gets deposited every day at midnight. I want to be able to get this file and import it to the server (its basically a list of names).
Here what I have done so far:
I created the database
Created the file and successfully imported data into it using the Import Data feature.
I saved the SSIS package
Scheduled an Agent Job for this package to run at certain time,daily
At first the jobs would fail with a Access is Denied. I added a user under Credentials with my network account ( have admin rights on the work computer).Also added a Proxy for the Credential user I made.
Jobs fail with a “Cannot open data file” error. I tried changing things here and there, but I can’t get it to work.
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May 14, 2015
I have installed SQL 2014 (Evaluation Version) on testing machine. We want to import some excel files on database. I manually created one Test Database and now trying to import excel file. Import completed successfully but I am not able to see any table created as result of Import. I tried it 3-4 times and even restarted sql services but no luck.
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Oct 29, 2015
usual way to check if file exists
DECLARE @File_Exists INT
EXEC Master.dbo.xp_fileexist 'serverBSQL_Backupfile.bak', @File_Exists OUT
print @File_Exists
1
And if check folder, can use "nul", but it doesn't work for UNC path
DECLARE @File_Exists INT
EXEC Master.dbo.xp_fileexist 'serverBSQL_Backupul', @File_Exists OUT
print @File_Exists
0
If use xp_subdirs like:
EXEC master.dbo.xp_subdirs 'serverBSQL_Backups'
If the folder doesn't exists, Msg 22006, Level 16, State 1, Line 3 xp_subdirs could not access 'ServerBSQL_Backups*.*': FindFirstFile() returned error 67, 'The network name cannot be found.'
how to check if UNC folder exists in Backup? in my code I want to check if the unc folder exists before doing backup, the unc path is retrieved from other table or backup history.
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Dec 18, 2014
I want to setuo AlwaysON that requires Node and FileShare Majority Quorum settings..
I want to know how to configure File share for windows clustering ????
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Jun 29, 2015
I have question about tempdb needs to be configured 100GB 64kb block size.its fresh installation.
how to allocate the file sizes.still im not sure how many log files needs to be created with 100GB equals to 64KB block size.
what is 64KB block size and how to divide the logfiles 64KB into the 100gb or 50GB?
what is 64 KB cluster has 128 sectors?
tempdb drives should be formatted with a 64K allocation? how many files needs to created for good performance with 50GB or 100GB? ot 1TB
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May 7, 2014
A little background on what I am trying to achieve first. We are moving to Azure virtual machines and we will have 8 disks on the SQL Server box. I am adding more files to the primary file group and each file will go on its own drive. I am then rebalancing data across these files by rebuilding all of the indexes on the tables which is working fine. No problems so far all is good.
I now have an additional problem. If there is a lob or blob column on the table, rebuilding the clustered index and all the non clustered indexes doesn't rebalance the blob or lob data across the disks such as it does with in row data.
I cannot find any articles on rebalancing lob or blob data because all the articles say to move to a new file group. I do not want a new file group, I just want to use the primary file group where the data already resides, and just redistribute it evenly in the same way that I can in row data which is working fine.
One solution I thought about was to BCP data out of the table, truncate the table and then BCP back into the table which I imagine would have the desired effect of distributing the data evenly over the files.
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Nov 26, 2015
I am using the below script to get space alerts and now i am interested in sending alerts if for any drive space available is Less than 10% or 15%.. how to convert beelow code to find in %
Declare @Drives Varchar(20)
DECLARE @Spaces Varchar(50)
DECLARE @availableSpace FLOAT
DECLARE @alertMessage Varchar(4000)
DECLARE @RecipientsList VARCHAR(4000);
CREATE TABLE #tbldiskSpace
[Code] ....
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Aug 27, 2015
I want to set up a database role so that users can use sp_readerrorlog through SSMS. It does a check on membership in the securityadmin role.
I have tested it and can see you can grant execute on xp_readerrorlog but the SSMS GUI uses sp_readerrorlog.
I thought I could create a user/certificate and add the signature to sp_readerrorlog but it's not permitted (likely because it's not a normal database object).
So the other solution is to add the users to the securityadmin role but then explicitly deny alter any login (best done with a custom server role in 2012+ but otherwise just manually in 2008). I tested this out and it works, I'm not able to alter any logins or increase my own permissions, I also did a check of what's reported from fn_my_permissions(null, null) and it shows minimal permissions like I'd expect.
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Jun 10, 2015
I have Full database backup upto previous day and transaction logfile of Today transaction. my database has crashed. I have restored previous day's Full backup. I have faced difficulty to restore today's transaction from today's transaction log. What are the steps to restore full database back and one day's transaction log file. Note: there is no differential database backup and transaction backup.
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