OracleException Class

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The exception that is generated when Oracle returns an error.

Syntax

Visual Basic
C#


'Declaration Public Class OracleException Inherits System.Data.Common.DbException Implements System.Runtime.InteropServices._Exception, System.Runtime.Serialization.ISerializable


public class OracleException : System.Data.Common.DbException, System.Runtime.InteropServices._Exception, System.Runtime.Serialization.ISerializable

Remarks

This class is created whenever dotConnect for Oracle encounters an error generated by the server, or OracleConnection has been closed before attempting to execute an operation on the server.

Example

The following example generates a OracleException due to a non-existing table, and then displays the exception.

csharp


public void ThrowOracleException() { string mySelectQuery = "SELECT * FROM NONEXISTINGTABLE"; OracleConnection myConnection = new OracleConnection( "User Id=Scott;Password=tiger;Data Source=Ora;"); OracleCommand myCommand = new OracleCommand(mySelectQuery,myConnection); try { myCommand.Connection.Open(); } catch (OracleException myException) { MessageBox.Show("Message: " + myException.Message + "\n"); } }

public void ThrowOracleException()
{
  string mySelectQuery = "SELECT * FROM NONEXISTINGTABLE";
  OracleConnection myConnection =
    new OracleConnection(
        "User Id=Scott;Password=tiger;Data Source=Ora;");
  OracleCommand myCommand = new OracleCommand(mySelectQuery,myConnection);
  try
  {
    myCommand.Connection.Open();
  }
  catch (OracleException myException)
  {
    MessageBox.Show("Message: " + myException.Message + "\n");
  }
}

Visual Basic


Public Sub ThrowOracleException() Dim mySelectQuery As String = "SELECT * FROM NONEXISTINGTABLE" Dim myConnection As New OracleConnection( _ "User Id=Scott;Password=tiger;Data Source=Ora;") Dim myCommand As New OracleCommand(mySelectQuery, myConnection) Try myCommand.Connection.Open() Catch myException As OracleException MessageBox.Show("Message: " + myException.Message + ControlChars.Cr) End Try End Sub

Public Sub ThrowOracleException()
  Dim mySelectQuery As String = "SELECT * FROM NONEXISTINGTABLE"
  Dim myConnection As New OracleConnection( _
    "User Id=Scott;Password=tiger;Data Source=Ora;")
  Dim myCommand As New OracleCommand(mySelectQuery, myConnection)
  Try
    myCommand.Connection.Open()
  Catch myException As OracleException
    MessageBox.Show("Message: " + myException.Message + ControlChars.Cr)
  End Try
End Sub

Inheritance Hierarchy

System.Object
   System.Exception
      System.SystemException
         System.Runtime.InteropServices.ExternalException
            System.Data.Common.DbException
               Devart.Data.Oracle.OracleException

Reference

OracleException Members
Devart.Data.Oracle Namespace
OracleConnection Class
OracleCommand Class

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