Hi there
It is obvious that putting multiple database files on different physical disk is better for performance, but what about splitting the data on different files on the same disk?
I have got a database of about 20GB and only a single data file. will I benefit from splitting this file to multiple files on the same disk?
How to fix this SQL error event logg 17204 and 17207 ?
View 8 Replies View Relatedhello,all
I am new to Sql 2000,I installed sql 2000 database in C disk,but Now I found my C disk space is smaller than before,So I want to move my databse(include data and structure) from C Disk to D Disk(its space is very large) .
is it possible to do it ?
if its can be done ,do I need to change my asp.net program source code (exp: chaneg my crystal report connectstring ) ?
thanks in advanced!
Usually, our in house ERP software has 1 database and 1 database file. After an upgrade from MS SQL 6.5 to MS SQL 7.0 I have a database who's properties show that it is made up of multiple datafiles. What is the easiest and safest method to return this database to only have 1 datafile?
View 11 Replies View Relatedi have a table with rows of file names and paths. what i'm trying to do is process each file and store it in my sql database. i want to store the files as binary files (they are word and excel and pdf files) anyone know a way to do this? it would especially be useful if i could do this with a console application so i can schedule it
View 2 Replies View Related
I have inherited some responsibilities for which I'm not really qualified, so I'll push on through and maybe not totally fall down.
Assume 10 50GB databases, each in a single MDF file. All these MDF files reside on the C drive (the only drive on the system), running SQL 2005 in a 32-bit Windows 2003 or later, 8GB RAM.
The C drive is 6 physical disks in RAID 5, say about 1.0 TB or so. We have 4 dual-core processors on the box.
We have limited simultaneous users, initally about 8 users doing very heavy write on all tables in any one database. Later, we have about 15 users connecting via Web interface, and doing very heavy read and light writing. Each of the 10 or so database has this lifecycle: Heavy write for about 2 weeks (load data) then heavy read for about 1 month (research and search data), then nothing ever again (db is taken offline).
Of course, this is not enough information to go on, but let's just go on it anyway.
My TempDB, Log (simple recovery), Index etc is all on the same RAID 5 drive (C).
I have two basic questions I'd love to hear feedback on:
1. Is there any real advantage to creating 8 Data files for my database (one per processor core)?
2. Given that the hardware people here REALLY don't want to change anything, what should I fight for first:
a. Separate drive for LOG files?
b. Separate drive for TempDB?
c. Something else
Thanks in advance.
Hi
I wanted to ask a question in terms of design (Performance, scalability, maintenance, flexibility etc.) is it better to refernce a document on the actual file system (on a file server) i.e. from a database link to the actual file at a disk location
e.g. in the database have something like \fileserver2006 estewtext.txt or C: estewtext.txt
or is it better to store all the files in a database as blobs?
The Question i would like to ask is more in the context of desigining a document management system?
First of all i do not know whether this is the right form to ask the question Let me describe the scenario iam using Iam generating xml files at a particular place and sending them to a server xml1|--------------------->dataset1------------------------------>adapter1.update(dataset1)xml2|----------------------->dataset2----------------------------->adapter2.update(dataset2)xml3|----------------------->dataset3------------------------------>adapter3.update(dataset3) all the three updates should happen in only one transaction if any one of the update fails then the transaction should rollbackcan anyone tell me a way to do iti am desperately in search of any ways to do it can anybody help please
View 2 Replies View RelatedHi,I am new to SQL express and try to solve the 4GB size limitation.Is there a possibility to create a new database file every time I getto the limit?How can I do that with C#? how can I create new database file everytime it gets full?Can I be connected to two database files at the same time (the full dband the new db)?thanks in advance,oren
View 1 Replies View RelatedI have several databases that have grown to 300 GB and would like to distribute the data into multiple files across multiple drives. Can I create a new database that is spread across the new drives and use a full backup to restore or am I stuck with unloading the data table by table?
View 3 Replies View RelatedHi,
I have a sql server 7 running on a machine with two disk partitions (D: and E:).
The data files xxx.mdf and xxx.ldf are stored in D:, which has very few space available. I want to copy these files to E: but I get an error saying that it is not possible to change the source file of a database. Is it possible to do it or do i have to create another data file in E: and keep the old one in D:?
Thanks in advance,
browser
Hello, I have been having a bit of trouble finding help on the safestway to move data files to a different disk on the same server. Mosthelp is about moving data files to a different sqlserver. I just wantto move the files to a different drive on the same server. Any helpwould be appreciated.Thanks,David
View 6 Replies View RelatedI need to import multiple csv files and load into table and everytime new database has to be created .
I was able to create new databases using stored proc
How do i do a bulk insert for all the files at once to insert into tables .
i want to load all the files at once .
I am testing out a blank database created over two physical files on two separate disks with one table called data which has one column called values nvarchar(max).
I filled the table up with a whole load of data and ran a select * against it. If I run Permon at the same time I can see that the read load has been spread over multiple disks as each of these disks is getting read from in parallel. If I create the same database on a single file and run the same select * again it takes much longer, proving that the read load has been distributed across multiple disks.
Now moving onto writes, this is where the confusion lies. I understand that SQL server fills files evenly until they need growing, after which it will then fill files individually until they are full in a round robin fashion unless you have trace 1117 turned on. What I don't understand is why the writes aren't distributed out whilst it is filling these file groups.
I ran an continual insert into my table with go 1000000 to monitor how the files are being filled up. I monitored where SQL server was physically placing the files as they were being inserted by running the following query:
;WITH CTE AS
(SELECT
sys.fn_PhysLocFormatter (%%physloc%%) col1,
RIGHT(LEFT(sys.fn_PhysLocFormatter (%%physloc%%),2),1) AS [Physical RID],
DATAID
[Code] ....
I could see that it would a thousand or so records into file 1, then a thousand or so into file 2, then a thousand or so into file 1 etc etc. In another words it would hit one disk, then another disk, then back to disk one to fill the file evenly. Is there any way to make SQL Server distribute the writes out in parallel so that both disks are writing in tandem?
By the looks of it, multiple disks only scale reads, as with writes only one disk is ever written to at once which is annoying. Any way to harness the write power of multiple disks?
Hello --
I'm building an app that will allow users to create their own photo galleries. At this point, I'm planning on storing all photos as byte arrays in SQL server image fields.
Besides the organizational benefit, is there a space benefit to doing this? That is, if I have 1MB of .jpg's, will those same images take up less than 1MB of file space within the database?
One of the reasons I ask is that most hosting plans out there seem to offer more "normal" disk space than is allocated for the database, so I'm trying to make a best plan to accommodate what will probably end up being the biggest disk space consumer in my app (the photos, that is).
Any other recommendations re: this scenario (hosting, best practices) are appreciated.
TIA,
Eric
I tried samples of FileTable in SQL Server 2012 to store files in database. I have following questions.
1. When I right click on FileTable, and say Explore File Table Directory, I was taken to a directory. But if I search the same directory in my server/machine, the directory is not available.
2. Can I use some external server/disk as a directory for FileTable?
3. How easy is to use FileTables using .Net web applications?
Hello!
I have 2 harddisk in my computer and I have SQL 2005 Express on 1 of them (let's say C:), however, my C: is going to be full soon! Once it is full, is it possible to create a table on my other harddisk which the server can recognise?
Thanks!
OB
Can multiple instances of SQL 2005 Express attach to the same database files on a network share? I have seen this done before with MSDE where the database files are stored on the server, but instead of having a SQL server running on the network and then connecting to it, only the database files exist on the network share and the users connect through MSDE running on the local machine. Is this possible with SQL2005Express? I do not have the ability to share an SQL instance from one workstation to another nor do I have the ability to install an instance on the corporate server. Is it as simple as creating the database and storing the files on the share then attaching the database to the SQL Instance on each workstation?
View 3 Replies View RelatedIs there a way for multiple SQL 2005 instances in a cluster to share drives for user databases.
Once we install our instances in the cluster using seperate disk resources. Can we then have multiple instances share the same physical disk for user databases only. This is for a test environment.
Thanks
I have a situation where I would like to set up one DB server instance for US and anther one for AUStralia. The Instance should share the same data base/hardsisk. One of the instances will be running in using US time zone and anothe one in Australia time zone.
There will be 2 Application instaces one poinint to each SQL Server instance. This applications does write into the database
So the underlying requirment is to have 2 database server running in differnet time zones but accessing the same disk/set of data
What is the best way to do this? Is it linked servers?Girish
outside of restore manageability, can multiple filegroups enhance performance when only one disk is attached? I guess I should also ask if it can hurt?
I have two use cases and am a bit unclear after reading lots of material on the subject.
My first use case is an OLTP consisting of a very stable set of "configuration" tables and a volatile transaction intake table with RI on the stable tables. I thought about putting the volatile table in it's own filegroup due to it's behavior but am second guessing myself after seeing that every author on the subject seems to hint that filegroups are only relevant when they map to different disks.
My second use case is an archive (readonly) that I will "range" partition due to volume. My first instinct was to create one filegroup for each partition but again I'm wondering what that will buy me in an environment with only a single disk.
I have a requirement where in i have around 15 different flat files , filenames are fixed but folder path can be changed(i think i should use a variable for folder path). These 15 files data should go to their respective tables in the database.
Whether I need to create separate data flow task for each file or separate package? In addition to these, example : while importing product data into product table, if product ID already exists, we need to ignore it and upload only the new records.
I have a couple of hundred flat files to import into database tables using SSIS.
The files can be divided into groups by the format they use. I understand that I could import each group of files that have a common format at the same time using a Foreach Loop Container.
However, the example for the Foreach Loop Container has multiple files all being imported into the same database table. In my case, each file needs to be imported into a different database table.
Is it possible to import each set of files with the same format into different tables in a simple loop? I can't see a way to make a Data Flow Destination item accept its table name dynamically, which seems to prevent me doing this.
I suppose I could make a different Data Flow Destination item for each file, in the Data Flow. Would that be a reasonable solution, or is there a simpler solution, or should I just resign myself to making a separate Data Flow for every single file?
I am trying to restore multiple .bak backup SQL database files onto a new server. However, I have found that it will not allow me to restore multiple databases at once. Is there a way to do this so that I do not have to manually upload one at a time? I tried adding all the .bak files at once to the backup device window but it only did the first one listed. It would be so much easier to restore them all at once so that I do not have to continue this manual process. I am restoring them via device.
View 13 Replies View RelatedI need to be able to bulk insert a bunch of tables from their corresponding flat file. I have created an XML file (see below) which has the file name/table name pair at each node. I then created a ForEachLoop task and used the Node enumeration type and the following OuterXpathString: ReferenceFiles/File. At this point I get lost. How do I pass the 2 inside node values (file name and table name) to variables which I can then use as expressions for the bulk insert task inside the Foreach?
Here is XML file:
Code Snippet
<ReferenceFiles>
<File>
<FileName>Ref_Categories.txt</FileName>
<TableName>Ref_Categories</TableName>
</File>
<File>
<FileName>Ref_Configs.txt</FileName>
<TableName>Ref_Configs</TableName>
</File>
</ReferenceFiles>
Thanks.
I used the data export wizard to export a single table to a single flat file (multiple wasn't allowed). I saved the package as a *.dtsx file which I'm attempting to edit to add the additional tables.
Creating additional sources is fairly easy copy of the first source and change to the table name.
I've tried copying the destination connection and changing to a new text file, but can't get past having to add each column manually to the new destination.
How can I duplicate the mapping that must be taking place in the wizard in the *.dtsx editing environment?
This seems like a simple / common task, but I've been unable to find a solution.
Thanks, Richard
Hi,
I have searched but not found quite the best way to look at this so far..
I have an application that outputs data to several text files (up to 30). These have commonality by an object name, but then contain completely different column data.
In DTS I had each of the source text file connections going to one OLE DB connection and then individual transform data tasks pointing to the one OLE DB connection.
Looking at SSIS, it would appear that I would need to have one source and one destination for each of these and therefore 30 parallel data flows?
Just wondering if there is a neater way of doing this??
It is a regular data import that happens a few times a day - the text files are named the same as the SQL tables - ie app_userdata.txt goes to app_userdata table.
Hope that explains ok and thanks in advance.
Mike
Hi, My server went dead(problems with the hard disk), but I have a copy of the whole sql server directory including the database in a external hard disk. I have a new server now and I would like to copy this database (with the reports from reporting services too) from the external hard disk to my new server. can anybody help me please? Thanks.
Note : I have a plain copy of all the sql server directory with all the files including the database not a SQLServer backup done with the wizards.
If I return the Average, Minimum, and Maximum values for the counter Physical Disk: Avg. Disk Queue Length, and those values are 10, 0, 87 respectively, which value do I use to compute the Avg. Disk Queue Length for a 4 disk array(RAID 10): Average, Minimum, or Maximum? The disk(lun) is on a SAN.
-- Initialize Control Mechanism
DECLARE@Drive TINYINT,
@SQL VARCHAR(100)
SET@Drive = 97
-- Setup Staging Area
DECLARE@Drives TABLE
(
Drive CHAR(1),
Info VARCHAR(80)
)
WHILE @Drive <= 122
BEGIN
SET@SQL = 'EXEC XP_CMDSHELL ''fsutil volume diskfree ' + CHAR(@Drive) + ':'''
INSERT@Drives
(
Info
)
EXEC(@SQL)
UPDATE@Drives
SETDrive = CHAR(@Drive)
WHEREDrive IS NULL
SET@Drive = @Drive + 1
END
-- Show the expected output
SELECTDrive,
SUM(CASE WHEN Info LIKE 'Total # of bytes : %' THEN CAST(REPLACE(SUBSTRING(Info, 32, 48), CHAR(13), '') AS BIGINT) ELSE CAST(0 AS BIGINT) END) AS TotalBytes,
SUM(CASE WHEN Info LIKE 'Total # of free bytes : %' THEN CAST(REPLACE(SUBSTRING(Info, 32, 48), CHAR(13), '') AS BIGINT) ELSE CAST(0 AS BIGINT) END) AS FreeBytes,
SUM(CASE WHEN Info LIKE 'Total # of avail free bytes : %' THEN CAST(REPLACE(SUBSTRING(Info, 32, 48), CHAR(13), '') AS BIGINT) ELSE CAST(0 AS BIGINT) END) AS AvailFreeBytes
FROM(
SELECTDrive,
Info
FROM@Drives
WHEREInfo LIKE 'Total # of %'
) AS d
GROUP BYDrive
ORDER BYDrive
E 12°55'05.25"
N 56°04'39.16"
Hello,
I am trying to setup a test cluster and am having an issue. When I try to create the resource of a physical disk it takes both the drive e: and drive q: and doesn't seperate them into two physical disks as resources. This means when I try to associate the quorum disk it links the to physcial disk resource of drive e and q. Then when I try to install SQL2k5 I get the warning about installing SQL on the quorum disk. Am I missing something? Is there a way to seperate e and q onto two physical disk resources so I can specifically associate the quorum to q and the sql to e or should I be setting the quorum disk to a majority node set? Thanks in advance.
John
I am trying to write (my first, unfortunatly) DTS, and am having some problems.
I need to be able to import multiple flatfiles (all in the same format, just with different schema), each one going into a different table. I have written an application to call my DTS, sending it variables for the tablename and the filename. This works fine when I test it on a single flatfile.
My problem is, the Tranformation object does not reset after each DTS call, so I get "Column does not exist" errors after the first successful import. I can go into the DTS Manager and reset the Transformation options, but that would defeat the purpose of automation. Is there anyway to reset, or another technique, the Transformation object so that it will continuosly work on files that use different schema?
I am very new at DTS, so please consider me "ignorant" when replying.
Thanks in advance.
- Jordan
Hello,
this is my configuration :
1) 3 disks in RAID5 that hold the SQL data
2) 1 disk in RAID0 that holds the only paging file.
What will happen to the SQL data (DB) when the disk that holds the paging file crashes?
Kindest regards,
Luc.