get ora 12514 when connecting 12c to sql developer

Question

My procedure: 1. checking container , 2. altering container n unlocking

I made the following addition to tnsnames.ora

PDBORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = pdborcl)
    )
  )

I have unlocked the hr account and I mention pdborcl as service name while making the connection.

my listener.ora

  # listener.ora Network Configuration File:       C:\Users\SURBHI\Documents\product\12.1.0\dbhome_1\network\admin\listener.ora
  # Generated by Oracle configuration tools.

 SID_LIST_LISTENER =
  (SID_LIST =
   (SID_DESC =
     (SID_NAME = CLRExtProc)
    (ORACLE_HOME = C:\Users\SURBHI\Documents\product\12.1.0\dbhome_1)
    (PROGRAM = extproc)
    (ENVS =      "EXTPROC_DLLS=ONLY:C:\Users\SURBHI\Documents\product\12.1.0\dbhome_1\bin\oraclr1     2.dll")
      )
  )

LISTENER =
  (DESCRIPTION_LIST =
         (DESCRIPTION =
     (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
       (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )

I have tried several things like using tnsping pdborcl on command prompt which gives OK result.

But I am not getting positive result till now.