Connect to CDB PDB

[oracle@ol6-121-rac2 ~]

$ sqlplus /nolog
SQL*Plus: Release 12.1.0.2.0 Production on Tue May 26 12:19:06 2020
Copyright (c) 1982, 2014, Oracle. All rights reserved.
SQL> connect sys@cdb as sysdba
Enter password:
Connected.
SQL> alter session set container = pdb01;
Session altered.
SQL> show con_name ;
CON_NAME
PDB01
SQL> select sysdate from dual ;
SYSDATE
26-MAY-20
SQL>