一个Oracle Application Container的实例

本例基本涵盖了Oracle Multitenant功能中application container的以下内容：

创建application container/root
创建application PDB
创建application SEED
在application root中安装application
在application root中升级application
同步application

整个过程如下
创建application container/root

create pluggable database app1_root as application container
admin user admin identified by Welcome1
roles=(connect);alter session set container=app1_root;alter pluggable database open;

创建两个application PDB：

create pluggable database app1_pdb1 
admin user admin identified by Welcome1
roles=(connect);alter pluggable database app1_pdb1 open;create pluggable database app1_pdb2 
admin user admin identified by Welcome1
roles=(connect);alter pluggable database app1_pdb2 open;

创建application SEED：

create pluggable database as seed 
admin user admin identified by Welcome1;alter pluggable database app1_root$seed open;
alter pluggable database app1_root$seed close immediate;
alter pluggable database app1_root$seed open read only;

安装application，版本1.0：

alter session set container=app1_root;
alter pluggable database application APP1_USER_APP begin install '1.0';
create user user1 identified by Welcome1 container=all;
alter pluggable database application APP1_USER_APP end install '1.0';

两个application PDB与application root同步应用：

alter session set container=app1_pdb1;
alter pluggable database application APP1_USER_APP sync;
alter session set container=app1_pdb2;
alter pluggable database application APP1_USER_APP sync;

升级应用到2.0：

alter session set container=app1_root;
alter pluggable database application APP1_USER_APP begin upgrade '1.0' to '2.0';
grant create session to user1;
alter pluggable database application APP1_USER_APP end upgrade to '2.0';

其中一个application PDB与application root同步应用：

alter session set container=app1_pdb1;
alter pluggable database application APP1_USER_APP sync;

测试：

SQL> connect user1/Welcome1@//localhost/app1_root
Connected.
SQL> connect user1/Welcome1@//localhost/app1_pdb1
Connected.
SQL> connect user1/Welcome1@//localhost/app1_pdb2
ERROR:
ORA-01045: user USER1 lacks CREATE SESSION privilege; logon denied