CDB 实例的启动与关闭

1.1 关闭 cdb 实例

[email protected]> show con_name;
[email protected]> shutdown immediate;

查看后台进程
[[email protected] ~]$ ps -ef | grep ora_ | grep -v grep

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1.2 启动 cdb 实例

[[email protected] ~]$ export ORACLE_SID=cdb1
[[email protected] ~]$ sqlplus / as sysdba

启动数据库实例到 nomount 状态
[email protected]> startup nomount;

查看实例状态
[email protected]> select instance_name,status from v$instance;
查看 v$pdbs 动态性能视图，显示没有结果
[email protected]> select name,con_id,open_mode from v$pdbs;

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1.3 mount 装载 CDB

从 nomount 切换数据库实例到 mount 状态

[email protected]> alter database mount;
[email protected]> select instance_name,status from v$instance;

查看 pdb 情况，显示 pdb 也处于 mounted 状态
[email protected]> col name for a10
[email protected]> select name,con_id,open_mode from v$pdbs;
[email protected]> show pdbs

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1.4 open 打开 CDB

open 打开数据库实例

[email protected]> alter database open;

[email protected]> select name,status from v$instance;
[email protected]> show pdbs

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1.5 打开与关闭 PDB

1.5.1 查看 pdb 状态

[email protected]> show pdbs

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cdb 处于 open 状态时， pdb 默认处于 mounted 状态（种子 pdb PDB$SEED 始终 read only 状态）

1.5.2 pdb 中操作 打开 pdb

切换到 pdb1

[email protected]> conn sys/[email protected] as sysdba
[email protected]> show pdbs
open 打开 pdb1
[email protected]> alter database open;
[email protected]> show pdbs;

SQL>CONNECT [email protected] AS SYSDBA
SQL> ALTER PLUGGGABLE DATABASE ALL OPEN;
SQL> select name,con_id,open_mode from v$pdbs;

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1.5.3 pdb 中操作 关闭 pdb

pdb1 中执行命令

[email protected]> show pdbs;
[email protected]> shutdown immediate;
[email protected]> show pdbs

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1.5.4 cdb 中操作 打开 pdb

[email protected]> conn / as sysdba
[email protected]> show pdbs
在 cdb 中使用 alter pluggable database 语句 open 打开 pdb
[email protected]> alter pluggable database pdb1 open;
[email protected]> show pdbs

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1.5.5 cdb 中操作 关闭 pdb

使用 alter pluggable database 语句关闭 pdb

[email protected]> alter pluggable database pdb1 close immediate;
[email protected]> show pdbs

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1.5.6 cdb 中操作 打开所有非种子 pdb

[email protected]> alter pluggable database all open;
[email protected]> show pdbs;

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1.5.7 自动打开 pdb

1.5.7.1配置 CDB open 后 PDB 打开状态

当前 pdb1 open read write 状态

[email protected]> show pdbs
[email protected]> alter pluggable database pdb1 save state;

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