oracle provider for ole db

Some time ago, I saw some. NET connection database in the encyclopedia, found not very full, especially Sybase and CSV two data usage, now put my connection way for everyone's reference. Sybase (OLE DB) First you need to install 12.5 of the OLE clients and add data source in the configuration program. Then you can use it in. Net.

provider are COM objects and can communicate with each other through a set of COM interfaces. This COM based communication can be summarized as an operation performed on abstract objects such as DataSource, Session, Command, and Rowset. In OLE DB, the concept of C + + is designed with the concept of the drive API (C language) of the ODBC system replaced by the c

does not contain a caption, you can specify Hdr=no in the extended properties of the connection string.If you specify Hdr=no,jet in the connection string, the OLE DB provider will automatically name the field for you (F1 represents the first field, F2 represents the second field, and so on);2) Imex=1 all read-in dataAs characters, other values (0, 2) Please refe

Label:A few concepts need to be clear first: Database Engine: Some of the components that are pre-stored in the data base; Microsoft Jet (Joint engine technology): Microsoft Jet data Engine, released in 1992, primarily for data connections to Microsoft Accesss, the jet engine, with access only to office97-2003; Microsoft ACE (Office Access Connectivity engine ): As Access 2007 was released, the Microsoft Jet data Engine ushered in a special change, with the name becoming an access Database engin

Recently, when locating a problem, I found that using OLE DB to open a large Excel file, even if nothing is colse out, memory frees up some, but not back to the level before opening. In Excel 150M, after the decompression of the 900M scene, opened directly close, the memory is more than before opening nearly 90M. If turned off again, the memory will no longer increase. However, if you open many different la

Label:The Dameng database itself provides a variety of drivers, such as JDBC ODBC OLE DB, which can be checked when installed.If the driver does not install the database, the connection to the dream database cannot be established.Dameng database is very similar to Oracle in database composition or structure, and can also see a trace of MSSQLServer and MySQL shado

Tags: c # Excel OLE DB1,oledbconnection Connection string: 0ffice 97-2003: strconnection = string. Format ("Provider=Microsoft.Jet.OLEDB.4.0;Data source={0}; Extended properties=\ "Excel 8.0; Hdr={1};imex={2:d}\ ";", Excelfilepath, HDR, IMEX);Hdr=no indicates that ADO will not use the first line of your Excel file as the field name (this is the default field name: F1,F2). )imex= 0 Write mode, 1 read mode, 2

ODBCOdbcConnection con=NewOdbcConnection (constring); stringsql ="SELECT * from TEST";//stuinfo A table in a database that is bound to a user data sourcecon. Open (); OdbcCommand com=Newodbccommand (sql, con); using(OdbcDataReader reader =com. ExecuteReader ()) {Console.WriteLine ("number of fields: \t{0}", reader. FieldCount); Console.WriteLine ("============== data Content ==========="); while(reader. Read ()) {Console.WriteLine ("ID: {0}\ttitle: {1}", reader. GetIn

something, I was wrong because of the data source this, less a space, written datasource, looking for a long time. If you're sure it's true, check if the computer has Excel, reinstall ISAM. Specific steps: In the Run dialog box, enter the following: Regsvr32 C:\WINDOWS\system32\msexcl40.dll and then enter.After that, there's no problem, it's connected. Just look at the action statement 12345678910111213141516 public boolSearchIndexSheet(stringk){stringstrIndex ="select * from [

When you access the ole db database in MSDTC, an exception is thrown. The exception information is: "Microsoft. Jet. oledb.4.0 ".ProgramThe itransactionlocal interface is not supported. Local transactions cannot be used by the current provider or fail to communicate with the basic transaction. Originally, when creating an ol