※ Query Execution Error..

Error Souce	.Net SqlClient Data Provider
Error Message	SQL Server에 연결을 설정하는 중에 네트워크 관련 또는 인스턴스 관련 오류가 발생했습니다. 서버를 찾을 수 없거나 액세스할 수 없습니다. 인스턴스 이름이 올바르고 SQL Server가 원격 연결을 허용하도록 구성되어 있는지 확인하십시오. (provider: TCP 공급자, error: 0 - 연결된 구성원으로부터 응답이 없어 연결하지 못했거나, 호스트로부터 응답이 없어 연결이 끊어졌습니다.)
Stack	위치: System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) 위치: System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) 위치: System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject, Boolean withFailover) 위치: System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject, Boolean withFailover) 위치: System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) 위치: System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) 위치: System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) 위치: System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) 위치: System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) 위치: System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) 위치: System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) 위치: System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) 위치: System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) 위치: System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) 위치: System.Data.SqlClient.SqlConnection.Open() 위치: www.common.module.DataBase.DBOpen() 파일 D:\DataFile\KSTUDY\web\www.2009\common\module\DataBase.cs:줄 157