This document is a tutorial on managing pluggable databases in Oracle 12c. It discusses how to rename, manage, and drop pluggable databases. It also covers security topics like common vs local users and roles, and how privileges are handled between the CDB root and pluggable databases. The tutorial demonstrates renaming a pluggable database called "TEST" to "new", managing tablespaces and datafiles between the root and pluggable databases, and creating both common and local users and roles.

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In my Part 1 Tutorial for how to deal with Pluggable database 12c I mentioned how to use
pluggable database, How to create pluggable database, how to create table space, and how to
open/close pluggable database.
Please checks the Part (1) before continue reading this article here.
Welcome to Pluggable database Part 2
 Rename Pluggable Database
 Manage Pluggable database
 Drop Pluggable database
 Security In Pluggable database
SQL> select name, con_id from v$active_services order by 1;
NAME CON_ID
----------------------------- ----------
TEST 3
As you see in the above query, I already created pluggable database called test. and it's in Read
write Mode.
Rename Pluggable database
SQL> alter pluggable database TEST close immediate ;
Pluggable database altered.
SQL> alter pluggable database TEST open restricted ;
Pluggable database altered.
SQL> select name, open_mode from v$pdbs;
NAME OPEN_MODE
------------------------------ ----------
TEST READ WRITE
SQL> alter pluggable database TEST rename global_name to new ;
Pluggable database altered.

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SQL> select name, con_id from v$active_services order by 1;
NAME CON_ID
--------------------------------------- ----------
new 3
if you are not connected to pluggable database or set session container then you will receive error
message
ORA-65046: operation not allowed from outside a pluggable
SQL> alter pluggable database new close immediate;
Pluggable database altered.
SQL> alter pluggable database new open ;
Pluggable database altered.
Manage Pluggable Database
Back to root container using / as sysdba like below:
SQL> conn / as sysdba
Connected.
SQL> select name, con_id from v$active_services order by 1;
NAME CON_ID
--------------------------------------------------- ----------
SYS$BACKGROUND 1
SYS$USERS 1
db12c 1
db12cXDB 1
new 3
We Control which list for for tablespace & datafiles by using con_id.
 List tablespace in root container

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SQL> select tablespace_name, con_id from cdb_tablespaces where con_id=1;
TABLESPACE_NAME CON_ID
------------------------------ ----------
SYSTEM 1
SYSAUX 1
UNDOTBS1 1
TEMP 1
USERS 1
CDATA 1
 List Database In root Container
SQL> select file_name, con_id from cdb_data_files where con_id=1;
FILE_NAME CON_ID
--------------------------------------------------------------------- ----------
/u01/app/oracle/oradata/db12c/users01.dbf 1
/u01/app/oracle/oradata/db12c/undotbs01.dbf 1
/u01/app/oracle/oradata/db12c/sysaux01.dbf 1
/u01/app/oracle/oradata/db12c/system01.dbf 1
/u01/app/oracle/oradata/db12c/gls/test.dbf 1
 Temp Tablespace in root container
SQL> select file_name, con_id from cdb_temp_files where con_id=1;
FILE_NAME CON_ID
----------------------------------------------------------------------------- ----------
/u01/app/oracle/oradata/db12c/temp01.dbf 1
 Create Tablespace ( already mentioned in Part (1))
SQL> create tablespace test datafile '/u01/app/oracle/oradata/db12c/gls/test03.dbf' size 20M;
Tablespace created.

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SQL> select tablespace_name, con_id from cdb_tablespaces order by con_id;
TABLESPACE_NAME CON_ID
------------------------------ ----------
SYSTEM 1
TEST 1
CDATA 1
SYSAUX 1
TEMP 1
UNDOTBS1 1
USERS 1
SYSAUX 2
TEMP 2
SYSTEM 2
TEMP 3
SYSAUX 3
PDB_TEST 3
SYSTEM 3
14 rows selected.
 Create temp tablespace
SQL> create temporary tablespace temp_test tempfile
'/u01/app/oracle/oradata/db12c/gls/temp_test.dbf' size 20M ;
Tablespace created.
SQL> select file_name, con_id from cdb_temp_files where con_id=1;
FILE_NAME CON_ID
--------------------------------------------------------------------------- ----------
/u01/app/oracle/oradata/db12c/temp01.dbf 1
/u01/app/oracle/oradata/db12c/gls/temp_test.dbf 1
The Same Steps in root container for create tablespace and temp tablespace for pluggable
database.

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Security In Pluggable Database
In This Section we will discuss how to manage Users, roles and privileges.
before Demonstration you need to know what is the difference between two users type :
 Common: when you create this kind of users in root it's automatically replicated
in all Pluggable database.
 Local: this kind of users only created on pluggable database that you are
connected to it now. and dose not effect on others pluggable database.
To Create Common Users you need to be connected to root container.
SQL> conn / as sysdba
Connected.
SQL> create user c##osama identified by osama ;
User created.
SQL> select username, common, con_id from cdb_users where username like 'C##%';
USERNAME COM CON_ID
------------------------------------ --- ----------
C##TEST YES 1
C##OSAMA YES 1
C##TEST YES 3
C##OSAMA YES 3
SQL> grant create session to c##osama ;
Grant succeeded.
SQL> conn c##osama/osama@test12c:1521/db12c ;
Connected.

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Let's connect to pluggable database :
The user i will created it here will not appear in root container.
SQL> conn sys/sys@test12c:1521/new as sysdba
Connected.
SQL> create user test identified by test ;
User created.
SQL> grant create session to test ;
Grant succeeded.
SQL> select username, common, con_id from cdb_users where username ='TEST';
USERNAME COM CON_ID
------------------ ----------
TEST NO 3
SQL> conn test/test@test12c:1521/new ;
Connected.
Same rules and conditions applied on Roles if you created in Root Container it will be replicated
to pluggable database, on other hand if you created in Pluggable database it will be local without
effecting Container.
Let's connect to Root Container
SQL> conn / as sysdba
Connected.
SQL> create role c##root_role ;
Role created.

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SQL> select role, common, con_id from cdb_roles where role='C##ROOT_ROLE';
ROLE COM CON_ID
--------------------- --- ----------
C##ROOT_ROLE YES 1
C##ROOT_ROLE YES 3
SQL> conn sys/sys@test12c:1521/new as sysdba
Connected.
SQL> create role test2;
Role created.
SQL> select role, common, con_id from cdb_roles where role='TEST2';
ROLE COM CON_ID
---------------- --- ----------
TEST2 NO 3
SQL> create role hr container=all ;
create role hr container=all
*
ERROR at line 1:
ORA-65050: Common DDLs only allowed in CDB$ROOT
SQL> create user hr identified by hr container=all ;
create user hr identified by hr container=all
*
ERROR at line 1:
ORA-65050: Common DDLs only allowed in CDB$ROOT
---> you cannot create a common role inside a PDB.

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Check user privileges:
SQL> select grantee, privilege, common, con_id from cdb_sys_privs
where privilege='CREATE SESSION' and grantee='TEST';
GRANTEE PRIVILEGE COM CON_ID
-------------- ---------------------------------------
TEST CREATE SESSION NO 3
Drop Pluggable Database
SQL > drop pluggable database new including datafiles;
Pluugable database dropped.