如何将CDB仅表空间分配给CDB用户？

Question

• 我可以创建如下所示的CDB表空间：(全部使用：sqlplus / as sysdba)

-- create unique table space for admin
CREATE TABLESPACE admints DATAFILE '/path/to/admints.dbf' SIZE 20M AUTOEXTEND ON;

• 我可以创建一个具有默认表空间"system“的CDB用户，因为所有PDB都有一个"system”表空间：

-- create admin user on CDB (the defaut tablespace is "system")
CREATE USER C##admin IDENTIFIED BY P@ssw0rd DEFAULT TABLESPACE system QUOTA UNLIMITED ON system ACCOUNT UNLOCK;

• 我无法使用默认表空间“admints”创建用户：

CREATE USER C##admin IDENTIFIED BY P@ssw0rd DEFAULT TABLESPACE admints QUOTA UNLIMITED ON admints ACCOUNT UNLOCK
*
ERROR at line1:
ORA-65048: error encountered when processing the current DDL statement in
pluggable database ORCLPDB
ORA-00959: tablespace 'ADMINTS' does not exist

• 而且我不能在我创建的表空间上给我创建的用户分配配额，因为它只在CDB上，而不是为每个PDB创建的。是这样吗？

ALTER USER  C##admin quota unlimited on admints unlimited
*
ERROR at line1:
ORA-65048: error encountered when processing the current DDL statement in
pluggable database ORCLPDB
ORA-00959: tablespace 'ADMINTS' does not exist

• “承认”表空间只为CDB创建一次，而不是为每个PDB创建一次。
• 我想在国开行上的“接纳”表空间上创建C##admin用户的表，并且有一个无限的配额。
• 我希望C#admin至少有对所有PDB的读取访问权限，所以我不能卸载它们。
• 有可能吗？

Answer 1

所有容器都有一个默认的表空间：

SQL> select p1.name, p2.property_name, p2.property_value
from v$containers p1 join cdb_properties p2 on (p1.con_id = p2.con_id)
where property_name = 'DEFAULT_PERMANENT_TABLESPACE' order by 1;

NAME       PROPERTY_NAME                  PROPERTY_VALUE
---------- ------------------------------ --------------------
CDB$ROOT   DEFAULT_PERMANENT_TABLESPACE   USERS
PDB1       DEFAULT_PERMANENT_TABLESPACE   USERS
PDB2       DEFAULT_PERMANENT_TABLESPACE   SALES

创建用户而不指定任何内容：

SQL> create user c##myadmin identified by password;

User created.

SQL> select p1.name, u.default_tablespace
from v$containers p1 join cdb_users u on (p1.con_id = u.con_id)
where username = 'C##MYADMIN' order by 1;

NAME       DEFAULT_TABLESPACE
---------- ------------------------------
CDB$ROOT   USERS
PDB1       USERS
PDB2       SALES

然后在根容器中更改用户：

SQL> show con_name

CON_NAME
------------------------------
CDB$ROOT
SQL> alter user c##myadmin default tablespace admints quota unlimited on admints container=current;

User altered.

SQL> select p1.name, u.default_tablespace
from v$containers p1 join cdb_users u on (p1.con_id = u.con_id)
where username = 'C##MYADMIN' order by 1;

NAME       DEFAULT_TABLESPACE
---------- ------------------------------
CDB$ROOT   ADMINTS
PDB1       USERS
PDB2       SALES

SQL> select c.name, q.tablespace_name, q.max_bytes
from v$containers c join cdb_ts_quotas q on (c.con_id = q.con_id)
where q.username = 'C##MYADMIN';

NAME       TABLESPACE_NAME                 MAX_BYTES
---------- ------------------------------ ----------
CDB$ROOT   ADMINTS                                -1