OracleException 类

定义

当 Oracle 数据库或用于 Oracle 的 .NET Framework 数据提供程序返回警告或错误时生成的异常。The exception that is generated when a warning or error is returned by an Oracle database or the .NET Framework Data Provider for Oracle. 此类不能被继承。This class cannot be inherited.

public ref class OracleException sealed : System::Data::Common::DbException
[System.Serializable]
public sealed class OracleException : System.Data.Common.DbException
type OracleException = class
    inherit DbException
Public NotInheritable Class OracleException
Inherits DbException
继承
OracleException
属性

示例

下面的示例生成OracleException一个, 原因是缺少数据库, 然后显示该异常。The following example generates an OracleException due to a missing database, and then displays the exception.

public void ShowOracleException() 
{
   OracleConnection myConnection =
      new OracleConnection("Data Source=Oracle8i;Integrated Security=yes");

   try 
   {
      myConnection.Open();
   }
   catch (OracleException e) 
   {
     string errorMessage = "Code: " + e.Code + "\n" +
                           "Message: " + e.Message;

     System.Diagnostics.EventLog log = new System.Diagnostics.EventLog();
     log.Source = "My Application";
     log.WriteEntry(errorMessage);
     Console.WriteLine("An exception occurred. Please contact your system administrator.");
   }
}
Public Sub ShowOracleException() 

   Dim myConnection As OracleConnection = _
      New OracleConnection("Data Source=Oracle8i;Integrated Security=yes")

   Try 

      myConnection.Open()

   Catch e As OracleException

     Dim errorMessage As String = "Code: " & e.Code & vbCrLf & _
                                  "Message: " & e.Message

     Dim log As New System.Diagnostics.EventLog()
     log.Source = "My Application"
     log.WriteEntry(errorMessage)
     Console.WriteLine("An exception occurred. Please contact your system administrator.")

   End Try
End Sub

注解

只要OracleDataAdapter遇到它无法处理的情况, 就会创建此类。This class is created whenever the OracleDataAdapter encounters a situation that it cannot handle.

如果错误的严重程度太高,服务器可能会关闭 OracleConnectionIf the severity of the error is too great, the server may close the OracleConnection. 但是,用户可以重新打开连接并继续操作。However, the user can reopen the connection and continue.

属性

Code

获取错误的整数形式的代码部分。Gets the code portion of the error as an integer.

Data

获取提供有关异常的其他用户定义信息的键/值对集合。Gets a collection of key/value pairs that provide additional user-defined information about the exception.

(继承自 Exception)
HelpLink

获取或设置指向与此异常关联的帮助文件链接。Gets or sets a link to the help file associated with this exception.

(继承自 Exception)
HResult

获取或设置 HRESULT(一个分配给特定异常的编码数字值)。Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.

(继承自 Exception)
InnerException

获取导致当前异常的 Exception 实例。Gets the Exception instance that caused the current exception.

(继承自 Exception)
Message

获取描述当前异常的消息。Gets a message that describes the current exception.

(继承自 Exception)
Source

获取或设置导致错误的应用程序或对象的名称。Gets or sets the name of the application or the object that causes the error.

(继承自 Exception)
StackTrace

获取调用堆栈上的即时框架字符串表示形式。Gets a string representation of the immediate frames on the call stack.

(继承自 Exception)
TargetSite

获取引发当前异常的方法。Gets the method that throws the current exception.

(继承自 Exception)

方法

Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(继承自 Object)
GetBaseException()

当在派生类中重写时,返回 Exception,它是一个或多个并发的异常的根源。When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.

(继承自 Exception)
GetHashCode()

用作默认哈希函数。Serves as the default hash function.

(继承自 Object)
GetObjectData(SerializationInfo, StreamingContext)

使用关于异常的信息设置 SerializationInfoSets the SerializationInfo with information about the exception.

GetType()

获取当前实例的运行时类型。Gets the runtime type of the current instance.

(继承自 Exception)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
ToString()

创建并返回当前异常的字符串表示形式。Creates and returns a string representation of the current exception.

(继承自 Exception)

事件

SerializeObjectState

当异常被序列化用来创建包含有关该异常的徐列出数据的异常状态对象时会出现该问题。Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.

(继承自 Exception)

适用于