The CData ADO.NET Provider for Oracle Service Cloud enables you to take advantage of the bulk load support in Oracle Service Cloud through OracleServiceCloudDataAdapters. You can use the Batch API to execute related SQL data manipulation statements simultaneously. The provider translates all SQL queries in the batch into a single request.

Using the ADO.NET Batch API

Performing a batch update consists of the following basic steps:

1. Define custom parameterized SQL statements in OracleServiceCloudCommand objects.
2. Set the UpdatedRowSource property of the OracleServiceCloudCommand object to "UpdateRowSource.None".
3. Assign the OracleServiceCloudCommand objects to the OracleServiceCloudDataAdapter.
4. Add the parameters to the command.
5. Call the OracleServiceCloudDataAdapter's Update method. Pass in a DataSet or DataTable containing your changes.

Controlling Batch Size

Depending on factors such as the size of the request, your network resources, and the performance of the server, you may gain performance by executing several smaller batch requests. You can control the size of each batch by setting the OracleServiceCloudDataAdapter's UpdateBatchSize property to a positive integer.

Bulk Delete

The following code prepares a single batch that deletes records in bulk. The primary key for each row is required. The following example executes a batch for all DataRow records with a "Deleted" state:

C#

OracleServiceCloudDataAdapter adapter = new OracleServiceCloudDataAdapter();

using (OracleServiceCloudConnection conn = new OracleServiceCloudConnection("Url=https://abc.rightnowdemo.com;User=user;Password=password;")) {
  conn.Open();
  adapter.DeleteCommand = conn.CreateCommand();
  adapter.DeleteCommand.CommandText = "DELETE FROM Accounts WHERE Id=@Id";
  adapter.DeleteCommand.Parameters.Add("@Id", "Id");
  adapter.DeleteCommand.UpdatedRowSource = UpdateRowSource.None; 
  adapter.UpdateBatchSize = 2;
  adpater.Update(table);
}

VB.NET

Dim adapter As New OracleServiceCloudDataAdapter()

Using conn As New OracleServiceCloudConnection("Url=https://abc.rightnowdemo.com;User=user;Password=password;")
  conn.Open()
  adapter.DeleteCommand = conn.CreateCommand()
  adapter.DeleteCommand.CommandText = "DELETE FROM Accounts WHERE Id=@Id"
  adapter.DeleteCommand.Parameters.Add("@Id", "Id")
  adapter.DeleteCommand.UpdatedRowSource = UpdateRowSource.None 
  adapter.UpdateBatchSize = 2
  adpater.Update(table)
End Using