oledbexception 0x80004005

setting for registering another SQL Server through Enterprise Manager is 4 seconds, and the Query Analyzer is 15 seconds (which is why there is a greater likelihood of errors occurring in Enterprise Manager). The specific steps are: 1, in Enterprise Manager, select the "Tools" on the menu, and then select "Options"; 2, in the pop-up SQL Server Enterprise Manager Properties window, click on the "Advanced" tab; 3. Enter a larger number, such as 20, in the box to the right of login timeout (second

; "Options"-> "Connect"; Set the logon timeout to a larger number, and the connection timeout to 0. 　　IV. Application connection Failure All three of the above error messages occur in SQL Server's own client tools, and similar error messages are encountered in the application, such as: Microsoft OLE DB Provider for SQL Server (0x80004005)[DBNETLIB] [ConnectionOpen (Connect ()).] Specified SQL Server not found.Microsoft OLE DB Provider for SQL Server (

:\symbols 0:> sympath symbol search Path is:srv* Expanded Symbol search Path Is:srv*c:\symbols*http://msdl.microsoft.com/download/symbols ************* Symbol Path Validation Summary ************** Response time (ms) location Deferred That's right.Execute the following reload command: 0:>. Reload ... ..... ..... ..... ... .. ..... .......-...., ... and ..... ... and ..... ....., ..., ......... ................................................................ ......

Steps for converting SQL database to access database: 1. Create an access database: Create an access database and table in access. The access field type corresponds to the field type in SQL. 2. When creating a table in Access, pay attention to its reserved keywords. For example, if a field in the Password table uses a keyword, a series of statement errors will occur. For example, update T_Users setUsername = @ Username, Password = @ Password where UserId = @ UserId "indicates" System. data. oleD

C # Use Oledb to connect to Access. Some exceptions may occur in conn. Open (): It's okay to restart the program. What is the problem? Capture System. Data. OleDb. OleDbExceptionMessage unspecified error SourceMicrosoftJETDatabaseEngineErrorCode-2147467259StackTrace: in S C # Use Oledb to connect to Access. Some exceptions may occur in conn. Open (): It's okay to restart the program. What is the problem? Capture System. Data. OleDb. OleDbException Mes

control does not have its own name for this parameter, so you can only use the name sqlperformancestatus-EventArguments. If the exception parameter is null, nothing happens. If the exception parameter has a value, this value is checked. If the parameter is of the OLEDB Exception type, a message is displayed in the text of the warning label on the page. Remind you to pay attention to the use of terms again. If there is an AccessException type, it will be clearer, but unfortunately this type is n

exception again makes debugging more difficult. For example: Try { // Perform some operations, in case of throw an exception... } Catch (Exception E){ // Try to handle the exception with E Throw ;} The recommended method to handle different errors is to implement a series of catch blocks, which seems to be nothing, but can make your exception handling go from special to normal. For example, capturing a file-related exception is much better than c

that public is required here.Protected void page_load (Object sender, eventargs E){String sqlstring = "select * From productclass where productid = 0 ";String connectionstring = configurationmanager. connectionstrings ["connectionstring"]. tostring ();Dataset DS = new dataset ();Using (oledbconnection connection = new oledbconnection (connectionstring )){Try{Connection. open ();Oledbcommand command = new oledbcommand (sqlstring, connection );Oledbdataadapter da = new oledbdataadapter (command )

// All namespaces used in the import program Using system; Using system. Data. oledb; Using system. Windows. forms; Class oledbtest {Public static void main (){// Establish a connection to the databaseString strconnect = "provider = Microsoft. Jet. oledb.4.0; Data Source =" + application. startuppath + "\ My. mdb ";Oledbconnection aconnection = new oledbconnection (strconnect ); // Design the content of the dataset to be returnedOledbcommand acommand = new oledbcommand ("select * from persons",

(RegionID, RegionDescription) VALUES (100, \ 'description \')\";MyCommand. ExecuteNonQuery ();MyCommand. CommandText = \ "Insert into Region (RegionID, RegionDescription) VALUES (101, \ 'description \')\";MyCommand. ExecuteNonQuery ();MyTrans. Commit ();Console. WriteLine (\ "Both records are written to database .\");}Catch (Exception e){Try{MyTrans. Rollback ();}Catch (OleDbException ex){If (myTrans. Connection! = Null){Console. WriteLine (\ "An exc

When performing an operation, you must modify the data in multiple tables at the same time, and each data entry must be successfully operated. To prevent some data operations from being successful, we need to use transactions for data disorder. The transaction is: if all operations are successful, the transaction succeeds. If one data operation fails, the transaction is rolled back. Background write transactions: /// /// Execute multiple SQL statements to implement database transactions./// ///

whether the file exists.{Strconn = "provider = Microsoft. jet. oledb.4.0; Data Source = "+ path +"; extended properties = 'excel 8.0; HDR = yes; IMEX = 1'; "; // IMEX = 1 to convert textOledbconnection conn = new oledbconnection (strconn );Oledbdataadapter mycommand = new oledbdataadapter ("select * from [sheet1 $]", strconn );Dataset mydataset = new dataset ();Mycommand. Fill (mydataset, "[sheet1 $]");Foreach (datarow row in mydataset. Tables [0]. Rows){Count ++;String classid = "";String name

Original article published onWe are doing this todayData-drivenOfUnit TestEncountered a problem during the experiment.I have created an Access database and an Excel table as an experimental data source for data-driven testing.After a long time in the app. config file, I took a sigh of relief and finally began to write and test. Compared with the twoDatabaseAfter the unit test, I opened the test view with confidence to run two tests. As I expected to pass the unit test on Excel, the next one en

When I recently used Asp.net and access for development, the SELECT statement is normal, but it is always unsuccessful during update, which triggers an oledbexception and reports "Update statement syntax error, error code:-2147217900" When tracking, it is found that a separate SQL statement can be executed in access to find the cause and there is no result. Finally, I thought, is it because the keyword is used without being used? Stringbuilder updates

);Return ds;} /// /// Internal method. Determine the unique method for obtaining data inventory from this module,/// Process the data access component to access the database to obtain the data/// /// /// Private DataTable GetDataTable (string sSql){Return Query (sSql). Tables [0];} /// /// Internal method: Execute the query statement and return DataSet/// /// /// Private DataSet Query (string SQLString){Using (OleDbConnection connection = new OleDbConnection (sConnString )){DataSet ds = new Dat

First, add a namespace. CopyCode The Code is as follows: using system. Data. oledb; Protected void page_load (Object sender, eventargs E) { If (! Ispostback) { Strfile = request. querystring ["FILENAME"]; // path of the File Uploaded from other pages Excel (strfile ); } } Private void Excel (string filepath) { Try { Dataset DS = new dataset (); String connstr = "provider = Microsoft. Jet. oledb.4.0; Data Source =" + filepath + "; Extended properties = 'excel 8.0; HDR = yes; IMEX = 1'"; // conne

The following example creates an OleDbConnection and an OleDbTransaction. It also demonstrates how to use the BeginTransaction, Commit, and Rollback methods. Public void RunOleDbTransaction (string myConnString){OleDbConnection myConnection = new OleDbConnection (myConnString );MyConnection. Open ();OleDbCommand myCommand = myConnection. CreateCommand ();OleDbTransaction myTrans; // Start a local transactionMyTrans = myConnection. BeginTransaction (IsolationLevel. ReadCommitted );// Assign trans

Asp tutorial. net dataset, able, and dateviewAtaset is a temporary small warehouse. Through sqldataapert, it can be equivalent to a truck, and data is stored in dataset through the adapter sqldataapert in the database tutorial. Even if the connection is disconnected, it can still deal with the database, the following is an example:Public static dataset query (string sqlstr) {Using (oledbconnection conn = new oledbconnection (connstr )) {Try {Dataset ds = new dataset ()Oledbdataadapter da = new o

= Myconnection.createcommand (); OleDbTransaction Mytrans; //Start a local transaction Mytrans = Myconnection.begintransaction (isolationlevel.readcommitted); Assign transaction object for a pending the local transaction Mycommand.connection = myconnection; Mycommand.transaction = Mytrans; Try { myCommand.CommandText =/"Insert into Region (RegionID, RegionDescription) VALUES (./' description/') )/"; Mycommand.executenonquery (); myCommand.CommandText =/"Insert into Region (RegionID, R

AccessDataSource control does not have its own name for this parameter, so only the name sqldatasourcestatus-eventarguments can be used. If the exception parameter is empty, it means nothing happens. If the exception parameter has a value, the value is checked. If the parameter is an OLE DB exception type, the text of the warning label on the page will be prompted. Remind you again of the use of the term. If there is a accessexception type, it will be clearer, but in practice there is no such t