The parameters indicate the dbExpress driver DLL the LibraryName value , the entry function to use GetDriverFunc , the vendor client library, and some more specific parameters that depend on the database. Please try to reinstall your Oracle client or install another Oracle client. Once LibraryName and VendorLib have been set, your application does not need to rely on dbxdrivers. Please provide me the result of executing this code. I have no idea what this is about. When you create a new connection, the system will copy the default parameters from the driver; you can then edit them for the specific connection—for example, providing a proper database name.
|Date Added:||14 December 2009|
|File Size:||70.18 Mb|
|Operating Systems:||Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X|
|Price:||Free* [*Free Regsitration Required]|
The connection component uses the information available in the drivers. The SimpleDataSet component is new in Delphi 7. Please try to reinstall sqlconjection Oracle client or install another Oracle client. You can set the LoadParamsOnConnect property to indicate that you want to refresh the component parameters from the initialization files every time you open the connection.
However, one particular parameter, Databaseis required for all servers. In addition to this issue, the component has other limitations, including difficulty manipulating the dataset fields of the data access dataset which is important for setting key fields and can affect the way updates are generated and unavailability of some provider events.
If FailIfMissing is set to Truethe database connection will fail if the database does not exist. For example, the InterBase section reads as follows: When you add a new SQLConnection component to an application, you can proceed in different ways.
This list resembles the aliases of the BDE, and you can enter multiple connection details for every database driver. You can switch between the two connection descriptions easily by using two versions of the dbxconnections. The dbExpress component’s family provides four different dataset components: I had this in a nice outline, but in Preview mode, all formatting is lost.
Connect dbexpress to Oracle 10g XE – Devart Forums
In fact, when you select a driver or a connection at design time, the values of these files are copied to corresponding properties delpbi the SQLConnection component, as in this example:. In practice, you could set up a SQLConnection component by setting up the driver and then assigning the database name directly in the Params property, forgetting about the predefined connection.
In theory, the files aqlconnection be required if you want to change the DriverName or ConnectionName properties at run time.
Try to use these values. I’m not suggesting this as the best option, but it is certainly a possibility; the predefined connections are handy, but when the data changes, you still have to manually refresh every SQLConnection component.
The requested address is not valid in its contexton API ‘connect’. Each connection relates to the driver for its key attributes, as indicated by the DriverName property. Driver and vendor libraries are listed in properties you can freely change at design time although you’ll rarely want to do thiswhereas the database and other database-specific connection settings are specified in the Params properties.
The dbExpress Dataset Components The dbExpress component’s family provides four different dataset components: You can see the editor in Figure For example, with InterBase, Database is the name of the.
Has anyone ever heard of anyone actually connecting sqlconection Delphi or above to Oracle 10g XE local using dbExpress? It doesn’t affect connection to the to server.
Delphi + MySQL + SQLConnection
I’m not suggesting this as the best option, but it is certainly a possibility; the predefined connections are handy, but when the data changes, you still have to manually refresh every SQLConnection component. Retrieved from ” http: Values property to assign values to individual parameters. Each connection relates to the driver for its key attributes, as indicated by the DriverName property.
The component is meant to be a helper—you need only one component instead of four which must also be connected. Thank you so much for your guiding hand. I’m glad I did not build that cdlcrdbx Once you have defined the connection name, you can identify a database connection by simply setting the ConnectionName property to a valid connection name. In this case, a change in the predefined connections will be reloaded when you open the connection, at either design time or run time.