Oracle and Visual Basic using ADO. This VB6 tutorial explains how you can access an Oracle database from within Visual Basic. It is a bit short as it was thrown together from a post on the vbforums. However if you check out the Sample VB6 and Oracle Source Code that goes along with it. You should be able to easily understand what is going on. Read on and enjoy as you develop your Visual Basic Oracle application. Oracle databases have been around for years, and although they are not as popular as their Microsoft counterpart, many business rely on Oracle backends for all their needs. Because of this, we must know how to interface with an Oracle database from within our VB6 application. This VB6 tutorial will walk us through exactly how to do this. To access an Oracle database it is very similar to how you access any other database. We can simply use an ADO Connection object. We set the provider to be our Oracle provider and setup our connection string and password. Set db. Conn New ADODB. Connection. Provider Ora. OLEDB. Oracle. PropertiesData Source Database. Name. PropertiesUser Id someuser. PropertiesPassword somepassword. After we setup the connection all we do next is setup an ADO Command object that will be used with our oracle database. This is the same things we do for any Visual Basic database application. Set Cmd New ADODB. Command. Set Cmd. Active. Connection db. Conn. Parameters. Append. Create. Parameter, ad. Var. Char, ad. Param. I have inheritted several old VB6 applications that currently cannot be rewritten in. NET. These old applications all use ADO, and compile fine on my XP machine. High quality, individual, hand made traditional vases and bowl designs, glass sets, pastry trays, napkin holders, jewelry boxes and ashtrays from high quality crystal. Vb6 Ado Sql Server Update Stats TsqlUsing SQL Server 2005 and VB6 When I executing for yearly data or more than 3 months data, it is showing Timeout Expired error. It is not executing completely. Стоматолог Киев Добро пожаловать всем, кто проявляет заботу о здоровье своих зубов и кому. After surfing around the net, Ive found very little information regarding installation of VB6 on Windows 7. Most of the information out there is for Vista, and most. Search the worlds information, including webpages, images, videos and more. Google has many special features to help you find exactly what youre looking for. Output, 5. 0. Parameters. Append. Create. Parameter, ad. Numeric, ad. Param. Output. Now is where things start being specific to our Oracle database. Getting a result set back from an Oracle SP is not as simple as it is in SQL Server. The results must come back to the calling program in something called a reference cursor ref cursor. This will discuss what a ref cursor is and how to implement them and get data back. Oracle creates an implicit cursor for every select query I think that is the same for any database system. The cursor is simple the recordset results. If you are not going to use that result set for anything else ie to generate another query to execute then you do not need to declare a cursor. But to get the result set out of Oracle you need something that is called a ref cursor. This ref cursor is more or less the same as and ADO recordset. You declare the ref cursor in code some where on the Oracle database, that ref cursor sort of a structure in. Net is then listed as an In and Out parameter of the SP. Vb6 Ado Sql Server Update Stats On A TableYou generate the select statement you want to run then open the ref cursor you created as follows. Open c. Ref. Cur For. Select columns form whatever tables. From table names. Where conditions and Joins. Standard SQL here with one big exception since if using Oracle 8i or earlier, Oracle at that release level did not support the Inner and Outer Join statements. You must use the Oracle version of them. Inners are just and equal sign as in Sales. Product. ID Prodcuts. Product. ID. The Outer join is a lot messier, outer joins use the same equals sign and also a plus sign on the deficient side of the equal sign. This is the way to create the cursor First we create a package that will hold all the different return types. CREATE OR REPLACE PACKAGE cvtypes AS. TYPE Well. Data IS RECORD. Well. NameVarchar. Results. CountNumber. TYPE CVWEll. Data IS REF CURSOR RETURN Well. Data. Next we create a stored procedure that will use that ref cursor declared above. This procedure does not have any inputs, only output paramters. Create Or Replace Procedure Well. Counting. p. Well. Name OUTVARCHAR2. CountOUTNUMBER. Well. DataIN OUT cvtypes. CVWEll. Data. Open rs. Well. Data For. Wells. WELLNAME,CountRESULTS. WELLID. Wells, Results. Wells. Well. ID Results. Well. ID. WHEN OTHERS THEN. ROLLBACK WORK. End Well. Counting. We can then call the stored procedure from VB as shown in the included VB Projects. An example of a stored procedure with input parameters is here Create Or Replace Procedure One. Well. Count. p. Well. IDIN Number. Well. Name OUTVARCHAR2. CountOUTNUMBER. Well. DataIN OUT cvtypes. CVWEll. Data. Open rs. Well. Data For. Wells. WELLNAME,CountRESULTS. WELLID. Wells, Results. Wells. Well. ID p. Well. ID And. Wells. Well. ID Results. Well. ID. WHEN OTHERS THEN. ROLLBACK WORK. End One. Well. Count. We can also test these procedures and ref cursors from the SQLPlus prompt by doing the following. Enter the command SET SERVEROUTPUT ON Now we set up variables to hold data going into and out of the SP Assuming we are using the first SP displayed, the we will need 3 variables VARIABLE P1  VARCHAR25. This is because the field we are returning is 5. VARIABLE P2  Number           This is a number coming back from the SP VARIABLE P3   REFCURSOR     This will hold the result set that is coming back. From the SQL prompt enter EXECUTE Well. Counting P1, P2, P3 If the procedures completes successfully we can now display the output. The variable P1 and P2 will hold the last Well Name and number of results for that well name. The variable P3 will hold the complete recordset that is being returned. To display that result in SQLlus enter Print P3. Download the Oracle Example VB6 Code.