Dividing A Large Flat File Into Small Files
Jul 16, 2007Hi ,
Is there any method by which I can divide the large flat file into certain number of small files keeping the header in each of the sub files?
Regards,
Prash
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DTS Large Flat Files
Dec 5, 2000I have some Large flat fiiles that I need to export to my SQL Server database. The file sizes range from 16 MB to 116 MB. I've tried to save the files to an excel sread sheet and then export them in that format, but that didn't work. does anyone have any suggestions?
View 1 Replies View RelatedLoading Large Flat Files Into A SQL Database Using DTS
Dec 7, 2000Here's my delema, I have a file that's 308 bytes wide by 5.7 million records. The record length is fixed and the position and width of the known within the record. When I run DTS I recieve this error Msg MS DTS flat file provide and Err Diesdription: error creating file mapping view: not enough storage is available to process this command. Then when I try to continue with the wizard, it will not allow me to separate the data into the format that I need. Is there any other way to import this file using DTS?
View 1 Replies View RelatedHow To Distribute A Large Single File Database Into Multiple Files?
Aug 29, 2007I 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 RelatedFlat Files Having Only Column Names In One File And The Rows In The Other
Jun 11, 2007Sorry if this question had already been answered previously. I was unable search the forum on this topic. How will I merge these and then configure the first row as Column names (As this helps to map to the destination column names automatically)
Which Is Small And Which Is Large Data
Dec 22, 2014when to use table variable and temp table. i told the interviewer that when rows is less like hundreds or thousand then use table variable else use temp table.After that he asked that what do u mean by less data or thousand rows may be there are multiple columns involved with that less rows and make a huge data set.
View 3 Replies View RelatedOne Large Update Vs. Many Small
Oct 8, 2007
Hello,
the application will add items into a "bag". That is, the items in one table will refer a record in another table. This will be done in timely manner -- with second or minute delays between adding a new item. There will be up to thouthand of items per bag. The option is to wait until a full bag accumulates and set up all the references at once by using
UPDATE items SET container_ref = bag WHERE id IN [...]
The disadvantage of such all-at-once I see is inability to encapsulate the functionality into a SP -- the problem is to pass a set of IDs. The advantage should be efficiency in terms of total SQL Server load. How mush would it be?
One Large Database Or Many Small....
Oct 23, 2006Hi Experts
We are debating what is best:
1. To combine all the company's data in one large database, and use schemas and file groups to create logical and physical distribution on drives and namespaces
or
2. Distribute the data into smaller databases with related data - eg. products and product description in one db, Customers in another and orders and orderlines in a third db.
Just what are the pros and cons?
regards
Jens Chr
How To Create UNIX Format Files Using Flat File Connection Manager?
Dec 17, 2007Hi All,
How to create a text file in UNIX format using Flat File connection manager. By default when we create a connection manager for flat files it is taking "CRLF" as the delimeter.
I beleive the format of the file will be decided based on the control line feed character at the end of each row. There are different control line feeds for different operating systems.
CR - Mac OS (Carraige return)
LF - UNIX (Line Feed)
CRLF - Windows. (Carriage return Line Feed)
Correct me if i am wrong.
Thanks in advance.
System.OverflowException: Value Was Either Too Large Or Too Small For An Int32.
Mar 23, 2008System.OverflowException: Value was either too large or too small for an
Int32. Why does this error originate in the following line?"SqlCommand cmd = new SqlCommand("SELECT Count(*) FROM Contacts", conn)........ ..........DataSetContacts.ContactsRow row = ds.Contacts.NewContactsRow();..................row["ContactNumber"] = Convert.ToInt32(txtContactNo.Text);" ContactNumber field is SqlDbType.Int.
Use Of Large Field Definitions For Small Values
Aug 2, 2007HiThis is a question of "what does it cost me".Lets say I have an integer value which would fit into a smallint fieldbut the field is actually defined as int or even larger as bigint.What would that "cost" me ? How would definitions larger than I need forthe values in the field affect me ?Its obvious that the volume of the database would grow but with the sizeof resources etc that we have nowadays disc space isn't a problem likeit used to be and i/o is much faster and many people would tell me "whocares" , or IS it a problem ?How does it affect performance of data retrieves ? Searches ? Updatesand inserts ? How would it affect all db access if tables are pointingat each other with foreign keys ?Thanks !David Greenberg
View 3 Replies View RelatedRaid 5 Array - Large Or Small Stripe Size ???
Jun 14, 2001HI There,
Generally speaking, is it better to use a large or small stripe size for a Raid 5 array (4 drives) ? I would appreciate any specifics also.
Thanks in advance.
Charlie
Table Size Definition - Small/medium/large
Jul 18, 2006Hi,
Please could you tell me how big sql tables are when people refer to them as small, medium and large? Preferably in terms of disk space or rows (each row in my table will contain a standard length job advert and 20 additional columns with an average of 8 characters)
Thanks for your help! :-)
Stu
Unable To Edit Pre-defined Flat File Connection Manager Properties In The Flat File Destination Editor
Aug 24, 2007Hi,
I am testing SSIS and have created a Flat File Destination. I defined the Flat File Connection as New for the first time and it worked fine. Now, I would like to go back and modify the Flat File Connection in the Flat File Destination Editor, but it allows only to create a New connection rather allowing me to edit the existing one. For testing, I can go back and create a new connection, but if my connection had 50-100 columns then it would be an issue to re-create it from scratch.
Did someone else faced this issue?
Thanks,
AQ
Flat File Connection Manager Throws Error When A Column Gets Added To The Flat File
Dec 27, 2006Hi,
I have a situation where a tab limited text file is used to populate a sql server table.
The tab limited text file comes from a third party vendor. There are fixed number of columns we need to export to the sql server table. However the third party may add colums in the text file. Whenenver the text file has an added column (which we dont need to import) the build fails since the flat file connection manager does not create the metadata for it again. The problem goes away where I press the button "Reset Columns" since it builds the metadata then. Since we need to build the tables everyday we cannot automate it using SSIS because the metadata does not change automatically. Is there a way out in SSIS?
Output Column Width Not Refected In The Flat File That Is Created Using A Flat File Destination?
May 11, 2006I am transferring data from an OLEDB source to a Flat File Destination and I want the column width for all of the output columns to 30 (max width amongst the columns selected), but that is not refected in the Fixed Width Flat File that got created. The outputcolumnwidth seems to be the same as the inputcolumnwidth. Is there any other setting that I am possibly missing or is this a possible defect?
Any inputs will be appreciated.
M.Shah
How To Redirect The Error Of A Source Flat File To The Destination Flat File?
Nov 10, 2006Hi all,
I m using SSIS and i am transfering the data from Flat File Source to the OLE DB destination File. The source file contain some corrupt data which i am transfering to the other Flat file destination file.
Debugging is succesful but i am not getting any error output in the Flat file destination file.
i had done exactly which is written in the msdn tutorial of SSIS.
Plz tell me why i am not getting the error output in the destination flat file?
thanx
Flat File Source Error Output Conversion Error With UNICODE Files
May 14, 2008i have a weird situation here, i tried to load a unicode file with a flat file source component, one of file lines has data like any other line but also contains the character "ÿ" which i can't see or find it and replace it with empty string, the source component parses the line correctly but if there is a data type error in this line, the error output for that line gives me this character "ÿ" instead of the original line.
simply, the error output of flat file source component fail to get the original line when the line contains hidden "ÿ".
i hope you can help me with issue.
Thanks in advance.
Storing Small Binary Files In SQL CE 3.5
Dec 11, 2007
Hey everyone,
I'm deploying a desktop application with Sql CE 3.5. I have a collection of files that I would like to be save as a binary format in SQL CE. These files range from 1KB to 5MB. I know I cannot use varbinary(max) , instead I am limited to varbinary(8000), but this obvisously comes short of 5MB. There are articles stating to use the image datatype to get around this. Is this just bad practice, should I keep the files on the file system or take advantage of this work around? Do you have any suggestions?
Thanks in advance,
-- Chris
Converting Flat File To SQL2005 Table (Flat File From H***)
Feb 11, 2008First, a couple of important bits of information. Until last week, I had never touched SISS, and therefore, I know very little about it. I just never had the need to use it...until now. I was able to convert my first 3 flat files to SQL2005 tables by right clicking on "SISS Package" and choosing "SISS Import and Export Wizard". That is the extent of my knowledge! So please, please, please be patient with me and be as descriptive as possible.
I thought I could attach some sample files to this post, but it doesn't look like I can. I'll just paste the information below in two separate code boxes. The first code box is the flat file specifications and the second one is a sample single line flat file similar to what I'm dealing with (the real flat file is over 2 gigs).
My questions are below the sample files.
Code Snippet
Record Length 400
Positions Length FieldName
Record Type 01
1,2 L=2 Record Type (Always "01")
3,12 L=10 Site Name
13,19 L=7 Account Number
20,29 L=10 Sub Account
30,35 L=6 Balance
36,37 L=1 Active
37,41 L=5 Filler
Record Type 02
1,2 L=2 Record Type (Always "02")
3,4 L=2 State
5,30 L=26 Address
31,41 L=11 Filler
Record Type 03
1,2 L=2 Record Type (Always "03")
3,6 L=4 Coder
7,20 L=14 Locator ID
21,22 L=2 Age
23,41 L=19 Filler
Record Type 04
1,2 L=2 Record Type (Always "04")
3,9 L=7 Process
10,19 L=10 Client
20,26 L=6 DOB
26,41 L=16 Filler
Record Type 05
1,2 L=2 Record Type (Always "05")
3,16 L=14 Guarantor
17,22 L=6 Guar Account
23,23 L=1 Active Guar
**There can be multiple 05 records, one for each Guarantor on the account**
and the single line flat file...
Code Snippet
01Site1 12345 0000098765 Y 02NY1155 12th Street 03ELL 0522071678 29 04TestingSmith,Paul071678 05Smith, Jane 445978N 05Smith, Julie 445989N 05Smith, Jenny 445915N 01Site2 12346 0000098766 N 02MN615 Woodland Ct 04InfoJones,Chris 012001 01Site3 12347 0000098767 Y 02IN89 Jade Street 03OWB 6429051282 25 04Screen New,Katie 879500
As you can see, each entry could have any number of records and multiples of some of the record types, with one exception, every entry must have a "01" record and can only have one "01" record. Oh, and each record has a length of 400.
I need to get this information into a SQL 2005 database so I can create a front end for accessing the data. Originally, I wanted one line for each account and have null values listed for entries that don't have a specific record. Now that I've looked at the data again, that doesn't look like a good idea. I think a better way to do it would be to create 5 different tables, one for each record type. However, records 2 through 5 don't have anything I can make a primary key. So here are my questions...
Is it possible to make 5 tables from this one file, one table for each of the record types?
If so, can I copy the Account number in record 01, position 13-19 in each of the subsequent record types (that way I could link the tables as needed)?
Can this be done using the SISS Import and Export Wizard to create the package? If not, I'm going to need some very basic step by step instructions on how to create the package.
Is SISS the best way to do this conversion or is there another program that would be better to use?
I know this is a huge question and I appreciate the help of anyone who boldly decides to help me! Thank you in advance and I welcome anyone's suggestions!
Integration Services :: Perform Lookup On Large Dataset Based On A Small Dataset
Oct 1, 2015I have a small number of rows in a dataset, Table 1. There is a CLOB on a large dataset, Table 2. They join on a PK. I would like to retrieve this CLOB and add it to the data flow for Table1. In short I want to emulate the following:
Table 1: Small table without CLOB, 10 rows.
Table 2: Large table with CLOB, 10,000,000 rows
select CLOB
from table2
where pk = (select pk from table1)
I want this to return the CLOBs for the small number of rows in Table 1. The PK is indexed obviously so it should be a fast look up.
Table 1 and Table 2 live on different Oracle databases. How do I perform this operation efficiently in SSIS? It seems the Lookup and Merge Join wont do this.
Large Views Vs Multiple Small Views
Sep 6, 2007Which is more efficient? One large view that joins >=10 tables, or a few smaller views that join only the tables needed for individual pages?
View 1 Replies View RelatedHow Can I Take This Example Flat File And Parse Out Each Section To A New Flat File? Each Section Starts With HD (header Row)
Mar 13, 2006How can I take this example Flat file and parse out each section to a new flat file? Each section starts with HD (header row)
http://www.webfound.net/flat_file_example.txt
e.g. an example output file based on above (cutting out the first section) would be:
http://www.webfound.net/flatfile_output.txt
Also, I'll need to grab a certain value in each header row (certain position in the 100 byte header row) to use that as part of the filename that's outputed. I assume it would be better to insert these rows into a temp table then somehow do a search on a specific position in the row...but that's impossible? The other route is to insert each row into a temp table separated out by fields but that is going to be too combursome because we have several formats to determine separation of fields based on the row type so I'd have to create many temp tables and many components in SSIS when all we want to do is again:
1) output each group (broken by each header row) into it's own txt file
2) use a field in the header row as part of the name of the output txt file (e.g. look at the first row, whcih is a header row in flat_file_example. txt. I want to grab the text 'AR10' and use that as part of the filename that I create
Any suggestions on how to approach this whole process in SSIS...the simplest approach that will work ?
How To I Enter A Small Square Or A Small Circle In A NVARCHAR Field?
Dec 25, 2006I want to store a small cirle in a text field. Can anyone tell me how I can enter it in ascii code.
Thanks
Massive TRN File, But Small DB
Apr 5, 2006Hi Everyone,
We have a large and active MSSQL 2000 database. Recently, after a rebuild of the server, we had a problem with the SQL service SQLSERVERAGENT. The service could not start as the service account lost local permission to the registry. During this time, all of the data being sent to the database from our application accumulated into the database .ldf file. By the time we were able to get the service restarted, our .ldf file was approx. 28 Gigs. When the service restarded, the .ldf file shrunk down to regular size,about 40 megs, and the .trx tlog file grew up to 28 gigs for that specific period (new file every hour).
The problem is, the database file (database.mdf) stayed about the same as it was before the service was restarted. When the .ldf transfered to the .trn none of the 28 gigs of data got stored in the database. What does this mean? Perhaps with the service stopped the application using the db saw problems and did not commit the data making it all useless? Or is it possible that the data in the .trn log just needs to be forced to commit to the .mdf???
Is there any way to verify the data in the 28 gig .trn file and figure out if we should get it stored to the database? If yes, how would we go about verifying it, and after that how would we force it to commit to the .mdf file? Am I on the right track here or is it not as I see it??
Thanks!
Mike
Log Files Too Large.
Oct 20, 2000Hi,
I have inherited some databases whith extremely large Log files.
I tried the truncate transaction log but did not work.
Can some body please tell me how to truncate these log files.
Thanks in advance.
Attaullah
Large Transaction Log Files
Apr 4, 2007i have a few tables using Sql Server 2005 Express. currently they are holding roughly 30-40k records in them. i have my log files set at restricted growth to 90 megs. while im not close to reaching that, i would like my tables to be able to scale up to possibly millions of records. based on that, i figure the transaction log file will prolly need to have a higher threshold (unrestricted growth). for those with experience, for tables that have millions of records, what are the average size log files i could expect.
is it a bad idea to just shrink the log file every night during off peak hours so that regardless of the amount of records i have, ill always start the day with a minimal log file?
do large log files have any effect on SQL performance?
Extremely Large Log Files?
Aug 16, 2006We have SQL Server running on a Windows 2003 server, only because Backup Exec requires it. AT the location : C:Program FilesMicrosoft SQL ServerMSSQLData
there is this file: SuperVISorNet_log.LDF which is 15 Gb and is accessed daily. I apologize because I don't know what this is!
My question is: can this file be 'pruned' (for want of a better word) because it's taking up a lot of backup space.
Log Files On Large Transactions
Jan 25, 2008I am trying to run a query that deletes duplicates records on a table with 24m records. The problem is each time I run it the log file fills up and I get an error saying the log file is full. For this reason the query never ends.
Is there anyway to turn of logging when running a query?
I think it also has to do with disk drive runng out of space as the log file is growing to over 12gb.
It is running in simple mode already.
Linq To SQL Varbinary For Large Files
Jun 11, 2008Hello,
I have decided to use Linq for my current ASP.NET project and so far it has been good, but now I am implementing a system that will allow users to upload binary content such as pictures and videos. For ease of management and security, I have decided to store this content directly in the database. The performance hit is a minor concern because very few user-uploaded images/videos will be seen on any given page (usually just one).
From the limited tutorials I have seen on the internet, Linq supports the SQL Server varbinary column through its System.Linq.Binary class. This class does not appear to support STREAMS and instead opts to load all of the contents into memory. This content can then be converted to an array of bytes, which can then be output to the browser via the response stream. This is not good. What if I am sending a video that is very large? Varbinary supports up to 2 GB. I can't have a 2 GB video sitting in memory. It makes a lot more sense to stream it via a small buffer.
Obviously, I am going to limit the size of the content that users can upload, but the core problem remains. If I limit content size to 2 MB and I have 2 GB of memory on the server, then I can only serve 1000 users concurrently. In reality, that number would be much less because of other processes running on the server.
Is there no way to stream data from a varbinary column with Linq using a small buffer of bytes?
Do I need to implement some custom logic on my Linq classes? Since these classes are automatically generated, how would I do such a thing?
Thanks.
Insert Large Text Files Into Db
Apr 9, 2008how do i insert a large chunk of text into a table column. my project is to build a news website. where people can go and read news articles. the articles are provided by the author in word format, so how do i insert that news article into the table's column? any help would be appreciated
thanks
DB Design :: Is File Stream Or Blob Best For Small Database With Word And Other Docs
Aug 15, 2015I was putting a database together (its a C# application MSSQL) the application will handle a few hundred customers records and save maybe a couple of thousand word docs/images/other doc files wondered if the way to go was blob or filestream, I see the medium and larger databases seem to go for filestream but just wondered as not much mentioned about smaller dbs.I do not think security/disk space/super fast access will be a big issue.
View 4 Replies View RelatedStoring Large Files In The SQL Server 2005
Feb 9, 2006I have a table that I'm inserting a file into and using the Image data type to store the binary object. Now the code below works fine for files around 1.5 MB, but anything larger and it's like the code won't even execute and I get a Page Not found error.
I'm in the process of running some traces to find out what's going on in the backend, but I'm assuming there's something amiss with my code. The Image data type should handle files that size with no problem but for some reason it isn't.
Does anyone see anything wrong?
Thanks
Dim iLength As Integer = CType(File1.PostedFile.InputStream.Length, Integer)
If iLength = 0 Then Exit Sub 'not a valid file
Dim sContentType As String = File1.PostedFile.ContentType
Dim sFileName As String, i As Integer
Dim bytContent As Byte()
ReDim bytContent(iLength) 'byte array, set to file size
'strip the path off the filename
i = InStrRev(File1.PostedFile.FileName.Trim, "")
If i = 0 Then
sFileName = File1.PostedFile.FileName.Trim
Else
sFileName = Right(File1.PostedFile.FileName.Trim, Len(File1.PostedFile.FileName.Trim) - i)
End If
conn = New SqlConnection(eco)
conn.Open()
cmd = New SqlCommand("INSERT INTO ECO_Attachments (ECOID, FromType, DocName,OldRev,NewRev,NtLogin,DisplayName, FileName, FileSize, FileData, ContentType) VALUES (@ECOID, @FromType,@DocName,@OldRev,@NewRev,@NtLogin,@DisplayName, @FileName, @FileSize, @FileData, @ContentType) ")
cmd.Connection = conn
Try
File1.PostedFile.InputStream.Read(bytContent, 0, iLength)
With cmd
.Parameters.Add("@ECOID", SqlDbType.Int)
.Parameters.Add("@FromType", SqlDbType.NVarChar, 50)
.Parameters.Add("@DocName", SqlDbType.NVarChar, 250)
.Parameters.Add("@OldRev", SqlDbType.NVarChar, 50)
.Parameters.Add("@NewRev", SqlDbType.NVarChar, 50)
.Parameters.Add("@NTLogin", SqlDbType.NVarChar, 100)
.Parameters.Add("@DisplayName", SqlDbType.NVarChar, 200)
.Parameters.Add("@FileName", SqlDbType.NVarChar, 255)
.Parameters.Add("@FileSize", SqlDbType.Real)
.Parameters.Add("@FileData", SqlDbType.Image)
.Parameters.Add("@ContentType", SqlDbType.NVarChar, 50)
.Parameters("@ECOID").Value = ECOID
.Parameters("@FromType").Value = From
.Parameters("@DocName").Value = DocName
.Parameters("@OldRev").Value = OldRev
.Parameters("@NewRev").Value = NewRev
.Parameters("@NTLogin").Value = NTLogon
.Parameters("@DisplayName").Value = DisplayName
.Parameters("@FileName").Value = sFileName
.Parameters("@FileSize").Value = iLength
.Parameters("@FileData").Value = bytContent
.Parameters("@ContentType").Value = sContentType
.ExecuteNonQuery()
'.ExecuteScalar()
End With
Catch ex As Exception
Response.Write(ex)
'Handle your database error here
conn.Close()
End Try