Migrating CLOBS And BLOBS To SQL SERVER From ORACLE 9i
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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Aug 13, 2007
I'm trying to write SSIS packages to import DB2 6000 tables to SQL Server 2005 tables. The package vendor has defined CLOB and BLOB datatypes for columns in the DB2 tables, and going through the Data Flow tasks from OLE DB for DB2 to OLE DB for SQL Server, it tries to map CLOBs to TEXT columns, and BLOBs to IMAGE columns. The vendor has no conversion utility available, so I have to write the SSIS packages. However, the task generates a goodly number of errors just trying to open the OLE DB DB2 dataset. Errors like the following:
Error: 0xC0202009 at Set 5 1 2, DB2 vendor_master [7127]: An OLE DB error has occurred. Error code: 0x80040E21.
An OLE DB record is available. Source: "Microsoft DB2 OLE DB Provider" Hresult: 0x80040E21 Description: "Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done.".
Error: 0xC0208265 at Set 5 1 2, DB2 vendor_master [7127]: Failed to retrieve long data for column "COMPETITOR_COMMENT".
Error: 0xC020901C at Set 5 1 2, DB2 vendor_master [7127]: There was an error with output column "COMPETITOR_COMMENT" (8866) on output "OLE DB Source Output" (7138). The column status returned was: "DBSTATUS_UNAVAILABLE".
Error: 0xC0209029 at Set 5 1 2, DB2 vendor_master [7127]: The "output column "COMPETITOR_COMMENT" (8866)" failed because error code 0xC0209071 occurred, and the error row disposition on "output column "COMPETITOR_COMMENT" (8866)" specifies failure on error. An error occurred on the specified object of the specified component.
Error: 0xC0047038 at Set 5 1 2, DTS.Pipeline: The PrimeOutput method on component "DB2 vendor_master" (7127) returned error code 0xC0209029. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing.
Error: 0xC0047021 at Set 5 1 2, DTS.Pipeline: Thread "SourceThread0" has exited with error code 0xC0047038.
Error: 0xC0047039 at Set 5 1 2, DTS.Pipeline: Thread "WorkThread0" received a shutdown signal and is terminating. The user requested a shutdown, or an error in another thread is causing the pipeline to shutdown.
Error: 0xC0047021 at Set 5 1 2, DTS.Pipeline: Thread "WorkThread0" has exited with error code 0xC0047039.
Information: 0x40043008 at Set 5 1 2, DTS.Pipeline: Post Execute phase is beginning.
In this case, 'COMPTETITOR_COMMENT' is defined as a CLOB(2 M) column format in the DB2 database table, and the output format in the SQL Server 2005 table is defined as a TEXT column.
Any assistance would be appreciated.
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Feb 6, 2003
I have a program that uses ADO to read/write to/from an Oracle back-end database. I'm hoping that given the underlying schema is the same, I can simply change the database driver I'm using and use a SQL Server database instead. Has anyone migrated an application using ADO from Oracle to SQL ? Are there any issues/problems/tips that I should be aware of ?
Thanks in advance..
Scott..
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Sep 17, 2001
i am migrating data and schema from oracle server to sql server., when i try to do the dts it gives me an error saying could not resolve tnsnames.ora. iam not sure what is the problem.
My oracle server host is dbserver.hari.com.edu
and its name is Prod (name of the machine)
i tried both it still gives me the same error., but when i install an oracle client on the machine and configure the same it is working great.
My question is, is it necessary to install oracle client to migrate database from oracle to sql server. If not how do i do the same...what is the process to do it. since this is a prodction machine we don't want more of applications running on the same machine.
Your help is appreciated, thanks in advance.
Kavitha
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Jan 31, 2004
Hi
I am trying to migrate my database in Oracle 8i to Sql Server 2000 but am unsure of how to carry out the migration. How do I do it and what do I have to consider. My OS is Windows 2003. Thanks in advance
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May 30, 2006
I am migrating a database from Oracle to SQL Server 2005. I have a problem when migrating code from PL-SQL (oracle labguage) to T-SQL (sql server language). My problem is: there is pseudo-column in oracle called level that return the level from a register in a tree view of a select (a parent-child relationship). I would want to know how to translate that level column to T-SQL. Thanks!
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May 29, 2015
I just wanted to know what the easiest way would be to migrate a SQL Server 2012 database to Oracle?
Apart from the tables and views, the database also uses a number of stored procedures and functions which will also need to be migrated over onto Oracle.
I guess the problem with generating scripts for the database (right clicking database > tasks > generate scripts) is that the TSQL scripts will not run in Oracle which uses PSQL? Is this correct?
I have also considered using the import/export wizard. Do I need to install a feature to use this to export to Oracle?
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Mar 7, 2008
Hi
Can anyone help me out in migrating Oracle stored procedures & Functions which contains collection types (user-defined datatypes like VARRAYS) into SQL Server 2005. How to achieve this taks? This is very important for me and it's very urgent. Please someone help me.
Thanks & Regards
K P Kumar
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Jun 2, 2000
How do i migrate Stored Procedures from SQL Server (7.0) to ORACLE (8.0)??
Thanks
Anand
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Jan 26, 2008
If i want to migrate from SQL SERVER 2005 to Oracle, How Oracle will deal with my primary key columns in almost all tables having datatype of UNIQUEIDENTIFIER ???
is there any concept of uniqueidentifier in Oracle same as in SQL SERVER ????
Regards
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May 23, 2008
I am useing SQL Server Migration Tools for Oracle to move some data for archive purposes.
The data is moving great, however the SSMA crashes or just plain stops when it tries to convert a view that has an outer join.
Is ther any sort of fix for this?
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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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Oct 26, 2006
Is there any step by step help sites for setting up SQL 2005 linked (oracle 10) server?
I find MSDN articles but they referance winNT and 2000, I'm not getting very far and I'm not a DBA but need to get this working asap.
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May 8, 2015
we recently got a scenario that we need to get the data from oracle tables which is installed on third party servers. we have sqlserver installed on ourservers. so they have created a DBLINK in oracle server to our sqlserver and published the DBLINK name.
what are the next steps that i need to follow on my sqlserver in order to access the oracle tables ?
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Jan 11, 2007
Hi--
I am running SQL Server 2005 on Win2k3:
Microsoft SQL Server Management Studio 9.00.2047.00
Microsoft Analysis Services Client Tools 2005.090.2047.00
Microsoft Data Access Components (MDAC) 2000.086.1830.00 (srv03_sp1_rtm.050324-1447)
Microsoft MSXML 2.6 3.0 4.0 6.0
Microsoft Internet Explorer 6.0.3790.1830
Microsoft .NET Framework 2.0.50727.42
Operating System 5.2.3790
I have the OraOLEDB.Oracle provider installed to the (C:oraclexe) directory.
I am having problems querying from linked oracle server. When i setup oracle as a linked server and purposely enter an incorrect password the query i run tells me i have an incorrect password. So it at least knows that. when i set the correct password and run a query I get this error:
(i replaced the real server name with "someServer".)
Msg 7399, Level 16, State 1, Line 1
The OLE DB provider "OraOLEDB.Oracle" for linked server "SomeServer" reported an error. The provider did not give any information about the error.
Msg 7303, Level 16, State 1, Line 1
Cannot initialize the data source object of OLE DB provider "OraOLEDB.Oracle" for linked server "SomeServer".
This is how I set up my Linked server:
Provider: "Oracle Provider for OLE DB"
Product Name: SomeServer
Data Source: SomeServer
Provider String: "Provider=OraOLEDB.Oracle;Data Source=SomeServer;User Id=MyLogin;Password=MyPassword"
The query I run is:
Select * from [Someserver].[schema or database]..[tbl_name]
Any help??? What am i missing?
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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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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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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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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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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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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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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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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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Jul 20, 2005
Hi folks,I want to be able to store and retrieve UNSAVED Word documents as BLOBs. Igot all the info for storing them if they're already saved on the filesystem. But what if they're not already saved? I could save them to a tempfile first and then make it a blob, but I'd rather not put them on the filesystem at all. I could use Document.Contents to get the Range object for thewhole doc and then BLOB that, but I'm not sure that would be quite the sameas a .doc file, maybe things like Styles and the like would be missing.TIA!Dave
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May 28, 2008
I got this error yesterday running an SSIS package:
"The buffer manager cannot create a file to spool a long object on the directories named in the BLOBTempStoragePath property. Either an incorrect file name was provided, or there are no permissions."
This same package was working fine on a different server, so I compared the configurations of the two boxes. It turned out that the service account that runs the package was in the Windows Administrators group on one box but not the other. I added the service account to Administrators on the box that had the problem and the problem went away.
I have looked around and have not found a list of the necessary Windows permissions that an account must have in order to run an SSIS package. This list would include write permissions to the path specified in BLOBTempStoragePath. Has anyone out there configured an account with minimal permissions to run a package that has a Data Flow?
Thanks,
Ron Rice
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Sep 20, 2006
When I try to migrate a database on a SQL Server 2000 server to a SQL Server 2005 server with the Copy Database Wizard of the SQL Server Management Studio, I'm confronted with the following problem;
Performing operation...
- Add log for package (Success)
- Add task for transferring database objects (Success)
- Create package (Success)
- Start SQL Server Agent Job (Success)
- Execute SQL Server Agent Job (Error)
Messages
* The job failed. Check the event log on the destination server for details. (Copy Database Wizard)
When I take a look at 'Event viewer' on the SQL 2005 server, the following error is displayed;
InnerException-->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.
(provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
I already enabled the MSSQLSERVER network configuration protocols (TCP/IP and Named Pipes ).
How do I solve this problem?
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Mar 8, 2008
I've developed a website and it's hosted by a hosting company. Lately i've registered a new domain with a new virtual hosting account. I've transfered my web files succesfully. But migrating the sql server failed for a couple of times now. My database containes many tables with many products. My hosting provides doesn't give me the opportuniy to restore my backup which i've backuped from my old server. First I tried to use the import and export tool of sql server 2005. This was very easy and it succeeded. But this tool only migrates the tables and the views. All the common stored procedures of asp.net membership are not exported. So I can't login at the moment. I've tried to generate a sql script with all the stored procedures with sql server management studio. But If i want to run this script on my new db, it fails with various errors. I tried to use the aspnet_regsql tool to create all the membership tables and stored procedures. If this succeeds, I can import and export my old db to the new one. But i'm getting a error while trying to use the aspnet_regsql tool. The error number is 290 and the error is: How can I fix this? Er is een fout opgetreden bij het uitvoeren van het SQL-bestand InstallMembership.sql. Het SQL-foutnummer is 290 en het SqlException-bericht is: Invalid EXECUTE statement using object "Relation", method "SetUseVarDecimal".----------------------------------------Details van fout----------------------------------------SQL Server: Database: [samet]Geladen SQL-bestand:InstallMembership.sqlOpdrachten mislukt:/*************************************************************//*************************************************************//*************************************************************/DECLARE @ver intDECLARE @version nchar(100)DECLARE @dot intDECLARE @hyphen intDECLARE @SqlToExec nchar(400)SELECT @ver = 8SELECT @version = @@VersionSELECT @hyphen = CHARINDEX(N' - ', @version)IF (NOT(@hyphen IS NULL) AND @hyphen > 0)BEGIN SELECT @hyphen = @hyphen + 3 SELECT @dot = CHARINDEX(N'.', @version, @hyphen) IF (NOT(@dot IS NULL) AND @dot > @hyphen) BEGIN SELECT @version = SUBSTRING(@version, @hyphen, @dot - @hyphen) SELECT @ver = CONVERT(int, @version) ENDEND/*************************************************************/IF (@ver >= 8) EXEC sp_tableoption N'aspnet_Membership', 'text in row', 3000/*************************************************************//*************************************************************/IF (EXISTS (SELECT name FROM sysobjects WHERE (name = N'aspnet_Membership_CreateUser') AND (type = 'P')))DROP PROCEDURE dbo.aspnet_Membership_CreateUserSQL-uitzondering:System.Data.SqlClient.SqlException: Invalid EXECUTE statement using object "Relation", method "SetUseVarDecimal". bij System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) bij System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) bij System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) bij System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) bij System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async) bij System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) bij System.Data.SqlClient.SqlCommand.ExecuteNonQuery() bij System.Web.Management.SqlServices.ExecuteFile(String file, String server, String database, String dbFileName, SqlConnection connection, Boolean sessionState, Boolean isInstall, SessionStateType sessionStatetype)
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