Question

我有一个Windows服务应用程序，每分钟都会连接到数据库。 Somethimes我收到此错误：

ORA-20110：ORA-06508：PL / SQL：找不到正在调用的程序单元

解决方案已关闭，请在plsql中重新连接数据库，但我想在应用程序端执行此操作。

因此，我需要禁用所有连接池并尝试重新连接数据库。我如何使用devart做到这一点？

这是我的联系

this.ConnectMode = OracleConnectMode.Default;
this.Direct = true;
this.Close();
this.Server = ConfigurationManager.AppSettings["db_hostname"];
this.Port = Convert.ToInt32(ConfigurationManager.AppSettings["db_port"]);
if (db_connection_type == "SID")
   this.Sid = ConfigurationManager.AppSettings["db_sid"];
else
   this.ServiceName = ConfigurationManager.AppSettings["db_sid"];
this.UserId = db_username;
this.Password = db_password;
this.Open();

Answer 1

我找到了oracleconnection ownclass的clearPool

// C#
// Sample demonstrating the use of ClearPool API in OracleConnection class

using System;
using Oracle.DataAccess.Client;

class ClearPoolSample
{
  static void Main()
  {
    Console.WriteLine("Running ClearPool sample..." );
    // Set the connection string
    string strConn = "User Id=scott;Password=tiger;Data Source=oracle;" +
                     "Min pool size=5;";
    OracleConnection conn = new OracleConnection(strConn);

    // Open the connection
    conn.Open();

    // Clears the connection pool associated with connection 'conn'
    OracleConnection.ClearPool (conn);

    // This connection will be placed back into the pool
    conn.Close ();

    // Open the connection again to create additional connections in the pool
    conn.Open();

    // Create a new connection object
    OracleConnection connNew = new OracleConnection(strConn);

    // Clears the pool associated with Connection 'connNew'
    // Since the same connection string is set for both the connections,
    // connNew and conn, they will be part of the same connection pool.
    // We need not do an Open() on the connection object before calling
    // ClearPool
    OracleConnection.ClearPool (connNew);

    // cleanup
    conn.Close();
    Console.WriteLine("Done!");
  }
}

清除devart中的连接池吗？

1 个答案: