Oracle12监听配置问题，始终连接不上pdb数据库

老陈73

环境变量：
$ echo $ORACLE_HOME
/home/oracle/12/db1

$ echo $ORACLE_SID
orcl12c


数据库状态 ：
SQL> select instance_name from v$instance;

INSTANCE_NAME
----------------
orcl12c

SQL> show pdbs

    CON_ID CON_NAME                          OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED                          READ ONLY  NO
         3 PDBORCL                          READ WRITE NO

监听配置文件：
listener.ora

LISTENER =
(DESCRIPTION =
  (ADDRESS = (PROTOCOL = TCP)(HOST = 128.128.10.9(PORT = 1521))
)

SID_LIST_LISTENER =
(SID_LIST =
  (SID_DESC = (GLOBAL_DBNAME = orcl12c)(SID_NAME = orcl12c))
  (SID_DESC = (GLOBAL_DBNAME = pdborcl)(SID_NAME = orcl12c))
)


tnsnames.ora

ORCL12C =
(DESCRIPTION =
  (ADDRESS_LIST =
   (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
  )
  (CONNECT_DATA =
    (SERVICE_NAME = orcl12c)
  )
)

pdborcl =
(DESCRIPTION =
  (ADDRESS_LIST =
   (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
  )
  (CONNECT_DATA =
   (SERVICE_NAME = pdborcl)
  )
)

老陈73

数据库重装之后，连上了。