关于Oracle 12C pdb用户无法登录的问题

新装了oracle12c，对新的CDB和PDB用户如何登录一直一头雾水，经过一晚上的查找，终于解决。

1. sqlplus /nolog -> conn /as sysdba 登录到oracle

2. 将session切换到PDB下alter session set container=pdborcl

3. 建立表空间create tablespace tablespace_name datafile ‘/home/oracle/var/data/tablespace_name.dbf‘ size 500m autoextend on;

4. 查看表空间select tablespace_name,file_id,file_name from dba_data_files;

5. 建立用户create user table_name identified by password default tablespace tablespace_name;

6. 对用户授权grant dba to toolbar;

7. 提交commit；

8. conn toolbar/toolbar@pdborcl
   ERROR:
   ORA-01017: invalid username/password; logon denied

   始终无法登录

9. 设置TNS_ADMIN

   export TNS_ADMIN=/home/oracle/app/oracle/product/12.1.0/dbhome_2/network/admin

   依旧没有解决

10. conn toolbar/toolbar@orcl
    ERROR:
    ORA-12514: TNS:listener does not currently know of service requested in connect
    descriptor

    出现TNS错误，应该是TNS脚本的问题

11. 查看services，发现应该是pdborcl的服务名有问题

    select name,pdb from v$services;
    
    NAME                   PDB
    ------------------------------ ------------------------------
    pdborcl.localdomain           PDBORCL
    orclXDB                CDB$ROOT
    orcl.localdomain           CDB$ROOT
    SYS$BACKGROUND               CDB$ROOT
    SYS$USERS               CDB$ROOT

12. 在tnsnames.ora里面加入

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

13. conn toolbar/toolbar@PDBORCL
    Connected.

    OK啦

    ^_^祝玩得愉快