SQL 2012 :: Removal Of BLOBs From Database
Apr 29, 2015
I currently have a lot of XML blobs being stored in several of the production databases that I look after. They're there as a application "logging" feature, so that the developers can investigate issues if they ever occur.
I want to get these out of my OLTP databases asap and am currently looking at options. I know Brent Ozar recently posted an article about Content Addressable Storage systems [URL] ....
How do you handle point in time recovery? Any other ways of storing this data?
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Aug 14, 2015
I'm looking to dynamically remove records from tables dynamically using the information schema within SQL Server. Looking to remove records from all the tables within a schema. I have gotten as far as generating the script dynamically then using a while exist clause to execute the delete statements.
DECLARE@TargetSchema varchar(100),
--@LibNameData varchar(100),
@fnameIndex varchar(100),
--@startOFR_SCR_FILENAME_DATE varchar(25),
[code]...
Would like to execute the statements generated by the results from the information schema.
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Jun 25, 2007
Hi geniuses,
I have a core database question in MS Access and SQL Server.
Assume the following table in MS Access or SQL Server:
Employees table:
EmpID, Name, Hiredate, Photo;
and the following query:
"SELECT EmpID, Name, Hiredate FROM Employees;"
The question is, "does the blob object (Photo) affect the performance of the query even when not included in the select statement?"
I mean, will I gain some additional performance when separating the blob fields to another table?
Thanks for the answer.
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Apr 24, 2008
I have a table with embedded files in it and also ftp server/user/pwd fields so that each record has all the data and information required and need to configure an SSIS package to to FTP them to the destination as specified in the record within the databaseAt the moment I have a data flow task which uses a Derived Column and an Export Column transformation which creates the files to a temp folder then it runs a ForEach loop container back on the control flow to FTP each file and to then move each file to an archive folder.
All I think I need to know how to do is to somehow control the FTP connection settings with the fields from the database within this foreach loop, but it is a for each file collection. I also need to update each record saying it has been FTP'd as well
Do I need to have an initial query outside of this foreach loop to populate an array which can be used for the 4 FTP connection fields (server/user/pwd/directory), if so how?
Any ideas as to how to correctly finish this package.
Thanks
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May 24, 2004
I have searched high and low for this answer, but still to no avail...
Does anyone have a reliable way of storing serialized data into a table which does not use direct SQL on the client side? I am using Stored Procedures and simply need to be able to read out of the table the object written in.
Inserting appears fine, but reading only seems to come back with 16 bytes of data and I just can't figure out why. Whats the recommended way of doing this?
Matt.
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Mar 27, 2000
Are there any issues with BLOBs in SQL 7.0 ?
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May 4, 2004
Hello to all,
Please help me to get a right decision:
storing BLOBs 5M in database or using URL. I saw a lot of articles about this matter and really cannot decide.
The database size is about 35 M, not too much DDL operations.
Advises?
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Aug 10, 2007
Hello all,
I've been struggling with an interesting problem. I currently have a solution but it is very slow.
I will be cycling data through a table. Each cycle has 1 million records with 60 fields. One procedure I need to perform on this data is a character cleanse. I have a list of 12 characters that need to be removed.
Right now I have a stored procedure that pulls the characters from a table one at a time. It feeds it to a nested loop that replaces the character with nothing ('') on records that contain the character (something like "update tbl1 set FIELD = replace(FIELD, '&', '') where Field like '%&%'"). This works... but seems rather inefficient. It can take 10 minutes to do a 250,000 record table.
I have tried borrowing regular expressions from VBscript using com objects, it worked and seemed more efficient at first but then I threw a large file at it and it took a half hour to complete.
Im running SQL 2005 on a dual Xeon 3.4 box with 2 gb of ram.
Any advice would be greatly appreciated!!
~~~Thanks~~
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Jul 20, 2005
I am looking for some T_SQL code that would help us eliminateduplicate data entry into our mailing db. Finding and removing theexisting dups is not rocket science, but I am looking for a completesolution.We also want to be able to come up with a T-SQL script to beintelligent enough to know if:"Bill Jones" is the same as "Billy Jones" or"Bill Jones" is the same as "William Jones" or"Bill Jones at 123 My street" is the same as "Bill Jones at 123 MySt."Purchasing scripts from a company is not out of the question. Its amatter of script cost versus my hourly rate to create them... Needlessto say, something cheap.We have only heard of one app that is dynamic enough to handle this,and the cost was way, way out of our range, 6 figures is almost 2years salary.Any ideas would be greatly appreciated.
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Jul 11, 2007
We can use rs.exe to publish a report automatically, but how do we do the reverse - remove a report automatically?
Is there a way by using a MS utility?
Is there a way by writing code, using library objects?
Part of the problem we face is having servers with RS all set up with a particular connection string and published reports. We then want to change everything and we want to do it automatically.
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Jun 27, 2007
I have a situation where my client wants to ensure that data which is removed from a SQL Server database is truly removed. That is, if I delete a record, or delete data from a row, can I be sure that the data is truly gone and that it's not just the internal B-Tree pointers that were removed? Can I trust that someone with access to the .mdb file could not perform some binary pattern matching on the file and find the data that I assumed was deleted (regardless of how difficult that task would be)? I'm using SQL Server 2000. Thanks in advance.
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Jan 4, 1999
Howdy,
Any one got any tricks on speeding up storing and retrieving image data? I have a typical 2MB image and I am trying to improve speed... it now takes 8 seconds to store the blob.
thanks
Dick Butler
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Aug 3, 1998
Help! Where building a document mgmt system that will store MSword documents, etc in SQL Server.
When we BCP a table which contains image data to another copy of the table,
the image data seems to get clobbered and is not longer valid. Has anyone had this problem
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Feb 15, 2007
We have a blob in one table that is storing pdf files. I need towrite a select query that will grab that column and write those *.pdffiles out to a location on my hard drive. Does anyone know how thatcan be done? All suggestions would be greatly appreciated....
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Jul 8, 2007
Hi,
VS2005
SQl workgroup 2005
I have a DB where I store alot of Blobs, the blobs are tagged up with alot of id. My concern is deleting them automatically on a regular basis, too keep the DB size down. I will be deleting them based on based on age(date/time) and what category the blob is classed as.
- My concern is how to delete blobs sort of equally dispersed among the categories so no category ends up empty although it may have old pictures in it.
Any tips, links or code is much welcome.
(my app will be acessing the DB though ADO .NET 3.0 c++/cli)
Cheers,
Andreas
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Aug 17, 2006
I want to store message database in SQLEv. Each message contains fixed header and a body. Body is UTF-16 encoded text. Average size of the body is about 700 symbols. Standard deviation about 1000 symbols. Maximum size - 200K symbols. Total count of the messages is up to 2 millions.
The only type I can use for body is text or binary blob. But blob larger than 256 bytes store in separate pages. Because of most message bodies lager than 256 bytes, each message take avg. PageSize / 2 not used for storing data, but occupied space.
For 2M messages this space will be 4096 / 2 * 2M = 4G. But SQLEv has 4G limit for database size!
Is it any way to store such data in SQLEv more efficiently?
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Jan 8, 2004
Hi,
Ive got a server which replicates an awful lot of constantly changing data - the db itself could be around 2gb in size, however with the replication data in it it has ballooned to 6gb. On top of this, there is all the data in the D:MSSQLREPLDATAunc directories which seem to represent another log of some description.
Can I delete this data? I cant see what it would be used for and it totals some 25Gb! Obviously I cannot have this lying around on my server.
Does anyone know what it is used for?
thanks
Pete Storey
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Feb 15, 2006
Hi,
is there a way to ensure a merge subscription is synchronised before it is removed from the publisher using SMO? - (it is a push subscription)
I thought I had it as there is a MergeSynchronizationAgent object on the SubscriptionDatabase object, but calling Synchronize() on this throws an exception saying it can't contact the publisher.
Any help would be really appreciated, thanks.
Graham
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Feb 20, 2007
I created a setup package and installed it on my SQL2005 server. I cant seem to find anywhere on the server where they are installed, but I can access them from the Job schedule tool, which work for me.
However, now I have to upgrade the deployed SSIS and I cant seem to install on top of an existing one (gave me no errors but after testing it i realized it is still running the old version.)
My questions are:
1) How can I find and delete these SSIS packages from the server?
2) How can I just upgrade for a new version of a SSIS package?
I need to be able to do both things as at some point I may want to just remove some packages.
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Apr 20, 2007
Hello,
We needed to detach a database that contained a target ServiceBroker service and wanted to do this without impacting the rest of our system. The idea was the ServiceBroker would enqueue message to this service to be pickedup when the database was re-attached. Our sequence to do this was:
1. Disable the queue on the target service forcing ServiceBroker to queue in the initating side transmission queue.
2. Detach the database.
3. Re-attach the database.
4. Re-enable the queue
Messages sent to the service have a specified LIFETIME. What appeared to happen was that messages were being stored in the transmission queue as expected but on hiting the LIFETIME period they were being removed from the transmission queue and were therfore "lost".
Has anyone else experienced this or can anyone suggest what we are doing wrong.
Incidentally, beaware that detaching a database will disable ServiceBroker in that database when it is re-attached - we discovered that one the hard way :-)
Any suggestions gratefully recieved.
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Mar 4, 2004
I'm trying to store files such as pdfs in my SQL Server as blobs for a particular .NET application and I'm noticing a rather large performance hit when compared to if the pdf was simply stored in the web server's file system.
I have a pdf of 7MB. If this is on a web server it takes roughly 9 seconds to download. When I store the same pdf in my database and then write it onto the page using the code below it takes roughly 40 seconds to display. Can anyone help me to improve this performance difference? Should I not be using this method to store large files?
Dim PdfCol As Integer = 0 ' the column # of the BLOB field
Dim dr As SqlDataReader = cmd.ExecuteReader()
If dr.Read() Then
Dim mypdf(dr.GetBytes(PdfCol, 0, Nothing, 0, Integer.MaxValue) - 1) As Byte
dr.GetBytes(PdfCol, 0, mypdf, 0, mypdf.Length)
End If
Response.Clear()
Response.Buffer = True
Response.ClearContent()
Response.ClearHeaders()
Response.ContentType = "application/pdf"
Response.BinaryWrite(mypdf)
Response.Flush()
Response.Close()
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Dec 14, 2006
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?
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Mar 29, 2008
Hi everyone,
I am using this temporary data table which gets cluttered after certain time (table is used for registering data waiting for email confirmation).
Is there a possibility to empty a data table automatically every day (at a certain moment)?
Kind regards,Maxime
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Oct 4, 2005
I need help using the TSQL Command.... I want to display car reviews by authors.... a car may be reviewed by multiple authors.... but the latest entry should be displayed... the older enteries will not be displayed....the following is the query </P><FONT color=#0000ff size=2>
<P><FONT color=#000000>SELECT CarReviews.Date AS Date, CarReviews.Company AS Company, CarReviews.Name AS Reviewer, CarMake.MakeName, CarModel.ModelName, CarModel.YearName, CarMake.KeyName + '/' + CarModel.Image AS Image, CarReviews.Id AS IdFROM CarReviews INNER JOIN CarMake ON CarReviews.MakeId = CarMake.Id INNER JOIN CarModel ON CarReviews.ModelId = CarModel.IdGROUP BY CarMake.MakeName, CarModel.ModelName, CarModel.YearName, CarMake.KeyName + '/' + CarModel.Image, CarReviews.Id, CarReviews.Name, CarReviews.Company, CarReviews.DateORDER BY CarReviews.Date DESC</FONT></FONT></P><FONT color=#0000ff size=2>
<P></P></FONT>
<P>Results of above statement....
Date Company Reviewer MakeName ModelName YearName Image Id
----------------------- -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- -------- ----------------------------------------------------------- -----------
10/3/2005 5:12:25 PM LATimes.com Dan Neil MINI Cooper S 2005 RAJ-0122/RAJ-0122-82.jpg 8
10/3/2005 5:11:41 PM Star-Telegram.com G. Chambers Williams III MINI Cooper S 2005 RAJ-0122/RAJ-0122-82.jpg 7
10/3/2005 4:51:31 PM MotoFlare.com Joe Wiesenfelder MINI Cooper S 2005 RAJ-0122/RAJ-0122-82.jpg 6
10/3/2005 4:49:22 PM MotoFlare.com Jim Flammang MINI Cooper S 2005 RAJ-0122/RAJ-0122-82.jpg 5
10/1/2005 4:19:25 PM MotoFlare.com Erphan Rajput Audi A4 (2005.5) 2005 RAJ-0089/RAJ-0089-80.jpg 3
10/1/2005 4:19:25 PM MotoFlare.com Jim Flammang Audi A4 (2005.5) 2005 RAJ-0089/RAJ-0089-80.jpg 4 Problem is repeation... In the above statement .... the statement should return only 2 records... but it is displaying 6 records....record one should be of MINI Cooper S 2005 & second should be of Audi A4 (2005.5) 2005Urgent reply will be highy appreciated...Thanks,Erphan Rajput..
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May 21, 2015
I am working with one of the production database around 200 GB. This database has above 350 tables and more than 500 Indexes. I am feeling the database has so many Indexes than the required ones
When I run the below query, it gives me some indexes read value "0". The server was restarted a month ago.Is it ok to remove those indexes?
SELECT OBJECT_NAME(s.[object_id]) AS [Table Name] ,
i.name AS [Index Name] ,
i.index_id ,
user_updates AS [Total Writes] ,
user_seeks + user_scans + user_lookups AS [Total Reads] ,
user_updates - ( user_seeks + user_scans + user_lookups )
AS [Difference]
[code]....
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Jun 13, 2008
We have a N+1 SQL 2005 x65 SP2 + 3159 cluster which was running fine until the service account which runs Windows cluster and the SQL services was removed as a login from SQL. This was a new setup so the only SQL accounts are (SA) as SA, Windows Domain GROUP's which one group is configured as SA and the cluster account is added to this group. I cannot start SQL service on the cluster now. I've tried logging into one node as the service account which is member of a AD group which has SA rights to SQL as well as my personal account. If anyone knows a way ot fix this without reinstalling I'd appreciate your help.
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Mar 21, 2006
Hello...
I am going crazy trying to figure out how to do this. I have a flat file which I am massaging the data and loading into a table here is an example of a line out of the flat file:
"ABC NUTRITIONAL PRODUCTS","550","","","N","FAIR OAKS","","","COLORADO SPRINGS","C0","","","","","","","","A","","",""
My problem is that I have one field which is this address in a concatinated form. The fields that do not apply to this entry are suite#, floor# and other columns which are designated by the "" characters. The final concatinated addres field looks like this:
"550""""N""FAIR OAKS"""
I would like to remove the "" characters in the concatinated string. I just don't know the best way to do this? I was told DTS had a way of removing the "" from the flat file source. Since I have not used DTS extensively I am not sure if this is true. I was wondering how in SSIS I could go about removing the "" marks without removing the "" say if someone is quoted eg. John said "This is only a test". Removing the quotation marks in this instance would be changing the data. I am not sure how to do this and any help or advice is greatly appreciated!
Thank you...
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Sep 11, 2015
I've done already the schemas for all the tables a you suggested.But when I created a new table the dbo prefix (dbo.ADM.NewTable) appears.I'd like this dbo not to automatically appear whenever i created a new table — as it requires me to alter whenever I created a new table.Is this something that is required to determine the creator of the table?Otherwise, I'd like that to remove.
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Oct 14, 1999
Greetings
I'm clear about the use of a DELETE trigger to "move" your deleted record to a second database as a sort of recycle bin.
But SS7 has the limitation, and it's mentioned in BOL, that it cannot reference your TEXT, NTEXT or IMAGE fields in the DELETED table. It says to join the original table with DELETED to get at those fields.
The only problem is the original table's record has been deleted! Even though the transaction has not yet been COMMITTED.
Here's my Trigger:
CREATE TRIGGER AuditTest ON Activity FOR DELETE AS
INSERT AuditDB.dbo.Activity
SELECT Activity.* FROM Activity INNER JOIN Deleted
ON Activity.ActivityID = Deleted.ActivityID
And for discussion, here's my Table:
ActivityID uniqueidentifier
OrgId uniqueidentifier
Title varchar(600
Active bit
Comments text
LastUpdate datetime
Any suggestions? Has anyone been able to implement a DELETE Audit
Trigger on a table with BLOBs?
Thanks,
-Rich
Richard Hundhausen
Stuttgart, Germany
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Apr 15, 2004
Hey Guys I knwo this may sound impossible but lets say I have a number of fields one of which is a Long blob or long text
is there a way to have MYSQL search the blobs for keywords and then to extract them to other fields?
basically what I am asking is it possible to parse a long text blob for keywords and then grab data before or after those keywords?/
anyone know a way???
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Jul 20, 2005
I've seen plenty of posts regarding the estimation of table size,usually in the processing of planning for server storage needs.Well, I've got a different problem. I need to know how much data eachof our Customers are using in a Database. (1 SQL DB stores multiplecustomers).Basically, I want to be able to say: Customer A: 45.5 MB, Customer B:655 MB.So, how can I ask SQL Server how much data each Row in each table istaking up? I want to be able to calculate nightly the total size, so Iwould take each row in each table that belong to the customer, and addall the sizes together. I want to take into account blobs that arestoring images and PDF files also.Thanks in advance,Jesse Wolgamott
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Nov 15, 2015
I have this table:
id | Name | Age
==================
1 | AAA | 22
1 | AAA | 22
2 | BBB | 33
2 | BBB | 33
2 | BBB | 33
3 | CCC | 44
4 | DDD | 55
I need to delete from this table all the duplicate records and leave only one record. The table will looks like this:
id | Name | Age
==================
1 | AAA | 22
2 | BBB | 33
3 | CCC | 44
4 | DDD | 55
I work with sqlCE for Mobile...
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Feb 5, 2004
I am taking over a Database set up where we have 2 databases. One is a SQL SERVER 2000 db and the other is an Oracle 9i db.
THe previous DBA had/has a problem with transferring CLOB and Blob datatypes From the ORACLE db to SQL SERVER. He says that the OLEDB driver SQL SERVER provides has limitations particularly on the CLOB data because it truncates data over 4000 characters in length.
For the Blob issue:
We basically want to store/move attachments (word documents etc)
into image datatypes (SS) from the blob datatype (9i).
I figured I could do this using DTS or even using the Linked server method. I figured worst case scenario I would just store the documents on the server and then use SQL SERVER's textcopy utility to upload the documents into the image datatype column of the SQL SERVER table.
For the Clob Issue I have no idea what to do, because I cant find anything online that mentions SQL SERVER having issues with importing CLOB data over 4000 charcters in length, afterall the text datatype accomdates more than 4000 characters.
Does anyone have any suggestions for moving the Blob and most importantly the Clob datatypes from 9i to SQL SERVER without any truncation in the data????
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