QTP, issue connecting to Oracle DB

I am running below mentioned function in QTP ,
I get error "Provider cannot be found. It may not be properly installed.".Though I have installed oracle client on my machine(Oracle Runtime(213MB)).
Can please some one suggest whats missing.

Function Get_Id
      Dim objConn
      Dim objRecordset
      Dim strSQL

      Set objConn = CreateObject("ADODB.Connection")
      Set objRecordset = CreateObject("ADODB.Recordset")

  objConnectOracleReuse.ConnectionString = "Provider=OraOLEDB.Oracle; Data Source=(DESCRIPTION=(CID=GTU_APP)"  & _
               "(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=myHostName)(PORT=port)))" & _
               "(CONNECT_DATA=(SID=sid)(SERVER=DEDICATED))); User Id=userId; Password=pwswrd;"


      objRecordset.Open strSQL,objConn
      Dim obj
      obj =  objRecordset.fields.item("VALUE")

      Msgbox obj

      Set objConn = Nothing
      Set objRecordset = Nothing

End Function
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should be the name of the computer where Oracle Instance reside

should be 1521

should be the name of the Oracle instance

Where are these values assigned?

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Kumaran_1Author Commented:
I already have this information, hostName, sid, port.Didn't add to this post.Some issue exist in oracle client installation.nOT SURE WHAT IT IS.
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