Oracle12c多租户如何连接到CDB或PDB、CDB与PDB容器切换

2024-06-15 00:44| 来源: 网络整理| 查看: 265

Oracle 数据库 12 c 多租户选项允许单个容器数据库（CDB）来承载多个单独的可插拔数据库 (PDB)。那么我们如何连接到容器数据库 (CDB) 和可插拔数据库 (PDB)。 1. V$SERVICES视图可以显示数据库中的可用服务。 SQL> col pdb for a40 SQL> col name for a30; SELECT name, pdb FROM v$services ORDER BY name;SQL> NAME PDB ------------------------------ ---------------------------------------- SYS$BACKGROUND CDB$ROOT SYS$USERS CDB$ROOT andycdb CDB$ROOT andycdbXDB CDB$ROOT pdb01 PDB01 -- lsnrctl实用程序显示可用的服务。 [oracle@12c01 ~]$ lsnrctl status Listening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=12c01)(PORT=1521))) Services Summary... Service "4ecf8621e3da38eee0531019640aa598" has 1 instance(s). Instance "andycdb", status READY, has 1 handler(s) for this service... Service "andycdb" has 1 instance(s). Instance "andycdb", status READY, has 1 handler(s) for this service... Service "andycdbXDB" has 1 instance(s). Instance "andycdb", status READY, has 1 handler(s) for this service... Service "pdb01" has 1 instance(s). Instance "andycdb", status READY, has 1 handler(s) for this service... The command completed successfully 2.直接连接到一个容器数据库 (CDB) 连接到数据库的根容器和连接以前版本的单个数据库实例相同。在数据库服务器上，您可以使用操作系统身份验证。

方法一：

[oracle@12c01 ~]$ sqlplus / as sysdba

方法二：

或者 tnsnames.ora 文件配置

ANDYCDB = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 12c01)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = andycdb) ) )

C:\Users\andy>sqlplus sys/[email protected]:1521/andycdb as sysdba

3.直接连接到一个可插拔的数据库 (PDB)

tnsnames.ora 文件配置：

PDB01 = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 10.100.25.16)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = pdb01) ) )

C:\Users\andy>sqlplus sys/[email protected]:1521/pdb01 as sysdba SQL> show con_name CON_NAME ------------------------------ PDB01 说明：PDB 具有 SYSDBA、 SYSOPER、 SYSBACKUP 或 SYSDG 特权的用户可以连接到已关闭的 PDB。 PDB 的所有其他用户（CONNECT SESSION权限的用户）仅可以连接已经打开的PDB。 4. 容器之间切换 SQL> ALTER SESSION SET container=pdb01; Session altered. SQL> show con_name CON_NAME ------------------------------ PDB01 SQL> alter session set container=cdb$root; Session altered. SQL> show con_name CON_NAME ------------------------------ CDB$ROOT

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