ORA-12154: TNS:could not resolve the connect identifier specifiedVec 10 dana pokusavam povezati VB 2005 sa Oracle 11g bez uspjeha. Na formi sam kreirao dva commeandButton-a sa sljedecim kodom:
Code:
Imports System.Data
Imports Oracle.DataAccess.Client ' ODP.NET Oracle managed provider
Imports Oracle.DataAccess.Types
Public Class Form1
Dim conn As New OracleConnection
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
Private Sub cmdConnect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Connect.Click
conn.ConnectionString = "User Id=" + userID.Text & _
";Password=" + password.Text & _
";Data Source=" + dataSource.Text
Try
conn.Open()
Connect.Enabled = False
Catch ex As OracleException ' catches only Oracle errors
Select Case ex.Number
Case 1
MessageBox.Show("Error attempting to insert duplicate data.")
Case 12560
MessageBox.Show("The database is unavailable.")
Case Else
MessageBox.Show("Database error: " + ex.Message.ToString())
End Select
Catch ex As Exception
MessageBox.Show(ex.Message.ToString())
Finally
conn.Dispose()
End Try
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim oradb As String = "Data Source=orcl;User Id=hr;Password=test;"
Dim conn As New OracleConnection(oradb)
conn.Open()
Dim cmd As New OracleCommand
cmd.Connection = conn
cmd.CommandText = "select department_name from departments where department_id = 10"
cmd.CommandType = CommandType.Text
Dim dr As OracleDataReader = cmd.ExecuteReader()
dr.Read()
Label1.Text = dr.Item("department_name")
conn.Dispose()
End Sub
End Class
Imports System.Data
Imports Oracle.DataAccess.Client ' ODP.NET Oracle managed provider
Imports Oracle.DataAccess.Types
Public Class Form1
Dim conn As New OracleConnection
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
Private Sub cmdConnect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Connect.Click
conn.ConnectionString = "User Id=" + userID.Text & _
";Password=" + password.Text & _
";Data Source=" + dataSource.Text
Try
conn.Open()
Connect.Enabled = False
Catch ex As OracleException ' catches only Oracle errors
Select Case ex.Number
Case 1
MessageBox.Show("Error attempting to insert duplicate data.")
Case 12560
MessageBox.Show("The database is unavailable.")
Case Else
MessageBox.Show("Database error: " + ex.Message.ToString())
End Select
Catch ex As Exception
MessageBox.Show(ex.Message.ToString())
Finally
conn.Dispose()
End Try
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim oradb As String = "Data Source=orcl;User Id=hr;Password=test;"
Dim conn As New OracleConnection(oradb)
conn.Open()
Dim cmd As New OracleCommand
cmd.Connection = conn
cmd.CommandText = "select department_name from departments where department_id = 10"
cmd.CommandType = CommandType.Text
Dim dr As OracleDataReader = cmd.ExecuteReader()
dr.Read()
Label1.Text = dr.Item("department_name")
conn.Dispose()
End Sub
End Class
U oba slucaja dobijam sljedecu gresku: ORA-12154: TNS:could not resolve the connect identifier specified
Sa SQLPlusom i SQL Developerom se uredno spajam i pravim SQL upite
Nemam ideju sta ovdje nije dobro. Molim za pomoc!
steve585
