Add File To Clob Column Goes With Transaction Much Longer Then Without (Oracle)?
May 5, 2009
I want to add from vb.net a file into a clob column in oracle 9.6.1 (8 mb). When i add the file within a transaction then it goes much longer (10x longer) then when i add it whitout transaction. Why i have to wait so long with transaction object?
Here i have prepared an example code. the first code is without transaction and the second code with transaction. The first code is much faster then the second.
I have the problem only when i want to add the file in a clob column. When i want to add it in a blob column, then i don't have any problem.[code]...
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Oct 31, 2011
I want to know that do you still need to rollback your transaction if you haven't commit the transaction that was created earlier.
[Code]...
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May 31, 2011
i am developing a vb.net 2008 application. I use oledb to connect to oracle is there any way to insert a clob field in oracle from vb.net 2008 ?
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May 9, 2011
I get this error at the Commit of a transaction in a desktop application:
This OleDbTransaction has completed; it is no longer usable.
Other posts I have seen with similar error suggests this can occur if it takes a long time, or contains large amounts of data. This is not the case here.Logging tells me it takes 140 ms from Begin to Commit and about 10 commands executed inside the transaction.It is using an Oracle database.This class is a simplified version of my database class:
Class MyDatabase
Private mConnection AS OleDbConnection
Private mTransaction AS OleDbTransaction
[code]....
Is it not allowed to run a select inside a transaction like this? Or can it be done by running the transaction in a specific isolation level (I see that the BeginTransaction method has an optional parameter for doing this) ? ..Or some other sollution..? In my case, it was not a problem to move the select to run before the transaction started, but what if you need to run selects that must run inside the transaction?
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Apr 29, 2009
I've seen plenty of examples of transactions in the actual store procedure's SQL. But I'm wanting to do the transaction and keep track of it in code. I tried this but it says that my insertcommand's transaction object is null. How can I fix this?
vb Dim conn As SqlConnection = DBConnections.SQLServerConnection
conn.Open()
Dim params(1) As SqlParameter
[CODE]....
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Mar 5, 2009
What is this kind of exception?
Error : Execute requires the command to have a transaction object when the connection assigned to the command is in a pending local transaction. The transaction property of the command has not been initialized..
This one causes the error: Dim oOperation As COperationOutputTypeBS
oOperation = COperationOutputTypeBS.GetOperationOutputType(txtOperationCode.Text)
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Oct 8, 2011
I'm writing a tool the retrieves data from an Oracle database. The majority of the fields are VARCHAR2, but there's one particular field I want to retrieve that is a CLOB. I'm trying to convert the text in this CLOB to a string that I can then run a regex against it to isolate a certain bit of information and then display that information in the program's console. Unfortunately, I can't seem to figure out how to convert this CLOB into a usable string. I've tried a lot of different things, but what I've got at the moment is:
[Code]...
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Jan 21, 2010
I use a richtextbox control on a windows form for users enter formatted text into it and store it in an oracle table clob field. I use clob because data can be longer than a varchar2 field could store. There is no problem when I write it down to database (I write its rtf value using bind variables and OracleClient.OracleParameter) but when I want to read it back to the richtextbox there is nothing in the richtextbox control.
I checked database turns the data as I wrote it down. But the control displays nothing.
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Jun 6, 2011
Below is my code for DELETE button. What i want is if the user select the transaction from the listview and press the DELETE button it must be able to delete the transaction from listview and text file(temporary log file) which i keep all the transaction record. At the same time the list view must able show the total current balance from the deleted trnsaction.
[Code]...
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Jun 4, 2011
I am working with existing VB.NET code for a Windows Application that uses StreamWriter and Serializer to output an XML document of transaction data. Code below. Private TransactionFile As ProjectSchema.TransactionFile
Dim Serializer As New Xml.Serialization.XmlSerializer(GetType(ProjectSchema.TransactionFile))
Dim Writer As TextWriter
[code].....
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Sep 23, 2011
How to Implement transaction in function for an XML file?
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May 23, 2012
I have two text files, the first text file has two columns separated by a space (" ") and the second text file only has one column.
The column 1 in text file 1 and text file 2 match albeit in different order, what I'm trying to achieve is for every field in column 1 text file 2 I want to search for column 1 in text file 1 and display the matching column 2 field in column 2 text file 2.
Dim*OpenTextFile*As*String*= IO.Path.Combine("C:Test1.txt")
Dim*OpenTextFile2*As*String*= IO.Path.Combine("C:Test2.txt")
Dim*SaveTextFile*As*String*= IO.Path.Combine("C:Test2.txt")
[code]....
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May 10, 2009
I am explaining an issue that I have faced in my SSIS Package today. A script task reads a string from particular position in a feed file which is basically Transaction amount. I am providing the psuedo code below to explain the issue
[Code]...
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Mar 4, 2010
I am reading a csv file in to a datatable in vb.net and making a few checks and appending an extra column. I then want to perform a bulk insert using microsofts Oracle.DataAccess (no choice in this) to an Oracle database. what would be the best way to perform this as there is no bulkImport like in SQLserver.
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Dec 29, 2009
can you tell me,how can i add a provider for oracle(Microsoft Provider oledb for oracle).Actually i had Microsoft ODBC for oracle but i want to add a provider above mention.
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Feb 24, 2011
Trying to update an oracle 10g table using asp.net and the oracleclient connector Here is the sql syntax:
[Code]...
everything works fine. The column PURPOSE does exist and I am able to INSERT information into the PURPOSE column.
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Sep 19, 2011
I am having a strange problem since installing the latest version of ODAC, 11.2.0.2.1. I installed both the 32-bit and 64-bit versions because I develop applications for both architectures. My computer is Win 7 64-bit.
Since installing ODAC and referencing the new 64-bit version of ODP.NET, one of my web application projects in Visual Studio 2010 gives the following warning for all aspx pages and masterpages when I view them in Markup View.
ASP.NET runtime error: Could not load file or assembly 'Oracle.DataAccess' or one of its dependencies. An attempt was made to load a program with an incorrect format.
The warning is limited to Markup View. The web application builds and runs fine. I tried cleaning the VS Temporary ASP.NET Files, but that did not fix the issue. I removed all references to Oracle.DataAccess throughout my application, and then readded them to be sure that all the references were correct. The web app is compiled to 'Any CPU' but it uses the 64-bit Oracle.DataAccess. I created a new project, and referenced the same projects and dlls, and I do not get the warning, so it appears to be specific to this project file.
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Jan 28, 2011
I've written several loading programs in the past, but never with VB.NET, always VB 6.0.I need to load a text file (actually, there are 24 per day), into our Oracle database. I have the file open and I can read it no problem, the question is, what's the best way to load it?
In the past, I've always read a record into an array and then passed the array as a variable into the Oracle statement in my code - basically loading one record at a time. I'm wondering if there's a better way to do this, specifically in the new world of VB.NET. Is there a way to load everything at once, rather than running an INSERT statement for every record individually?
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Apr 8, 2010
Is there a proper code to export oracle query result to csv file? I want to save more than 3 million of records
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Jan 25, 2009
Reading binary file from hard drive in VB and writing to database.
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Dec 29, 2011
How do I update records in a dataset with records in a transaction file?
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Aug 14, 2011
How replace comment column with value column in resource file via programming?
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Apr 14, 2010
I haven't touched a project in about 8 months. It's ongoing for work, but hasn't really been published fully so it gets worked on in my spare time. I went to recompile and the build failed. It had previously worked. I can't figure out why. Part seems to be due to AxOWC11 being recognized, but it shows up in the namespaces. I'm looking for the .dll that shows up as AxOWC11.dll, but I'm not seeing any. I do have one that shows up as AxInterop.OWC11.dll and I do have just a OWC11.dll in my list. I've posted some of the errors below.
Warning 1 There are updated custom wrappers available for the following referenced components: Graph ,MSComctlLib.
Warning 2 Interface 'IOleCommandTargetArgument' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface. PE Files
Warning 3 Interface 'IAddinClient' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface. PE Files
Warning 4 Interface 'TextFormat' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface. PE Files
Warning 5 Interface 'ViewSurface' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface. PE Files
Warning 6 Interface 'IPivotCopy' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface. PE Files
Warning 7 Namespace or type specified in the project-level Imports 'AxOWC11' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases. PE Files
I'm on a machine with Windows XP using Visual Basic 2008 Express Edition
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Aug 10, 2010
I have an application with several forms. The form Main.vb has always been editable in the designer. However, this has changed. The icon in front of the name has changed to a module icon, and the designer and code are no longer found. When I run the application, it still functions as expected.
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Sep 18, 2009
I am trying to add records from an Access Database into another Access Database using DAO recordset.The VB.NET program would add the records until it hits random stop and error says "Object invalid or no longer set". what would cause this? The recordset contains 7 million records, but it only added approx 6000. Next time i run the program, it would add different number of records again.
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Aug 19, 2011
I think I have accidentally changed something in the properties of a form, but I am receiving this error now, and none of the 4 forms will load.
System.InvalidOperationException was unhandled
Message="An error occurred creating the form. See Exception.InnerException for details. The error is: InvalidArgument=Value of '52' is not valid for 'index'.\r\nParameter name: index"
Source="WindowsApplication1"
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Apr 28, 2012
I have run into a small little annoyance while writing a program. I have a bunch of controls on the form and while trying to figure something else out they all got parented to another control, using undo I unparented them from that control however now when the control is clicked the code that is in the sub for them does not run at all. If I double click the control it generated an entirely new sub with a number i.e. what was "Private Sub NumericUpDown1_Value Changed" becomes "Private Sub NumericUpDown1_ValueChanged_1".Near as I can figure the subs with the code are no longer associated with the controls.Is there a quick way of fixing this or am I stuck copy and pasting the code from each sub into a newly generated one?
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Jan 26, 2010
I know .NET no longer supports DDE however unfortunately most "Finance" related programs (ie, charting and data vendors) use DDE to tie into their data. (Ie, esignal, Marktfeed etc). I've been toying around with NDDE however I'm having a hard time implementing it...unless I'm just making 1 request then it's fine. My question is would it be possible to take VB6 Label Control since it has the "Linkmode, LinkTopic, LinkItem, Label_Change" Properties/Methods and events in it....and create something like DDELabel.dll via Activex control project then use that as part of VB.net?
I tried doing it via the Control Wizard then using it in .NET however I know for a fact I'm not doing it right. Perhaps if someone much more competent could attempt it see if it does give the DDE functionality when used in .NET they can point me in the right direction...
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Aug 16, 2010
I wrote a DLL a year or two ago on my old computer that worked well for a long time. I moved on to other things, then came back to it recently and discovered that the code doesn't run on my new computer. The problem seems to be with this line: [code]
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Feb 4, 2007
add as a separate annoucement at the top of each forum area.]>> You might like to get the FREE Add-Ins VSIP DVD, i've just got mine.[URL]
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