This document provides a tutorial on managing pluggable databases in Oracle 12c. It discusses how to check the container name and ID, view pluggable databases, create a new pluggable database called TEST, open and close pluggable databases, and manage tablespaces within pluggable databases. The key steps covered are using SQL commands like SELECT, ALTER, and CREATE to work with the container database, pluggable databases, tablespaces, and data files.

1. Pluggable Database Tutorial Part 1
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[oracle@test12c Desktop]$ sqlplus / as sysdba
SQL*Plus: Release 12.1.0.1.0 Production on Wed Jul 3 19:05:10 2013
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics, Real Application Testing
and Unified Auditing options
SQL>show con_name
CON_NAME
-------------------
CDB$ROOT
Where
CON_NAME:
Displays the name of the Container to which you are connected when connected to a
Consolidated Database. For non-consolidated database, it will return "Non Consolidated".
SQL>show con_id
CON_ID
------------
1
Where
CON_ID: Displays the id of the Container to which you are connected when connected to a
Consolidated Database. If issued when connected to a non-Consolidated Database, this command
returns 0.

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Now I want to check how Name for my my pluggable database , while installation i chosen five
container with prefix db_
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
Db_1 2
Db_2 3
Listener will look like the below:
Example how to connect Container, In my case i didn't create service in tnsnames.ora i am using
easy connect:
SQL>conn sys/sys@localhost:1521/db_1 as sysdba
Connected.
SQL>show con_name
CON_NAME
----------------
DB_1
SQL>show con_id

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CON_ID
------------
3
Work On Pluggable Database:
After create Container and enable pluggable database, we need to add new one since container
empty.
Under /u01/app/oracle/oradata ,create new folder
[oracle@test12c db12c]$ mkdir test
[oracle@test12c db12c]$ chmod -R 775 test
Sqlplus / as sysdba
SQL >create pluggable database TEST admin user admin identified by admin
file_name_convert=
('/u01/app/oracle/oradata/db12c/pdbseed/','/u01/app/oracle/oradata/db12c/test/');
Pluggable database created.
SQL>select pdb_name, status from cdb_pdbs;
PDB_NAME Status
----------------------- ------------
PDB$SEED NORMAL
TEST NEW
SQL>select name, open_mode from v$pdbs;
NAME OPEN_MODE
------------------------------ ----------
PDB$SEED READ ONLY
TEST MOUNTED
SQL>select name, con_id from v$active_services order by 1;
NAME CON_ID
----------------------------------------------
SYS$BACKGROUND 1
SYS$USERS 1
db12c 1
db12cXDB 1
TEST 3

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Now Con_id=3 , Most of Oracle Data Dictionary contains new_column called con_id , to check
datafile related to new pluaggable database :
SQL>select name from v$datafile where con_id=3 ;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/db12c/gls/system01.dbf
/u01/app/oracle/oradata/db12c/gls/sysaux01.dbf
Manage Oracle Container and Pluggable Database :
If you need to shutdown container, it will not be different as before:
SQL>show con_name
CON_NAME
------------------------------
CDB$ROOT
SQL>shutdown ;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL>startup ;
ORACLE instance started.
Total System Global Area 1252663296 bytes
Fixed Size 2287864 bytes
Variable Size 788530952 bytes
Database Buffers 452984832 bytes
Redo Buffers 8859648 bytes
Database mounted.
Database opened.
Check status for PDB :
SQL>select name, open_mode from v$pdbs;
NAME OPEN_MODE
------------------------------ ----------
PDB$SEED READ ONLY
TEST MOUNTED

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If you the above Status for Test Database you will see it as mounted state which mean we cannot
create anything yet on database, Let's Open it
SQL>alter pluggable database TEST open;
Pluggable database altered.
SQL>select name,open_mode from v$pdbs ;
NAME OPEN_MODE
------------------------------ ----------
PDB$SEED READ ONLY
TEST READ WRITE
The same for close Option
SQL>alter pluggable database TEST close immediate;
Pluggable database altered.
SQL>select name,open_mode from v$pdbs ;
NAME OPEN_MODE
------------------------------ ----------
PDB$SEED READ ONLY
TEST MOUNTED
Now you can open/close all pluggable database :
SQL >Alter pluggable database all Open;
SQL >Alter pluggable database all close ;
SQL>select tablespace_name, con_id from cdb_tablespaces where con_id=3 ;
TABLESPACE_NAME CON_ID
------------------------------ ----------
SYSTEM 3
SYSAUX 3
TEMP 3
to get data file
SQL>select file_name, con_id from cdb_data_files where con_id=3 ;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/db12c/gls/system01.dbf
/u01/app/oracle/oradata/db12c/gls/sysaux01.dbf

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SQL>select file_name, con_id from cdb_temp_files where con_id=3;
FILE_NAME CON_ID
------------------------------------------
/u01/app/oracle/oradata/db12c/gls/pdbseed_temp01.dbf 3
If you do the below query to create table space, it will not be created under TEST database,
therefore it will be created on root :
SQL >create tablespace cdata datafile '/u01/app/oracle/oradata/db12c/gls/test.dbf' SIZE
30M;
SQL>select tablespace_name, con_id from cdb_tablespaces order by
con_id;
TABLESPACE_NAME CON_ID
------------------------------ ----------
SYSTEM 1
CDATA 1
SYSAUX 1
TEMP 1
UNDOTBS1 1
USERS 1
SYSTEM 2
TEMP 2
SYSAUX 2
SYSTEM 3
SYSAUX 3
TEMP 3
12 rows selected.
Same for temp tablespace :
SQL>create temporary tablespace root_temp tempfile
'/u01/app/oracle/oradata/db12c/temp_01.dbf' SIZE 30M;
If you need to create Tablespace in pluggable database follow the below, you have to options
 connect to pluggable database in our case test using tnsnames.ora or easy connect
o connect sys/sys@localhost:1521/test
 alter session command line
o alter session set container= <Name>

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SQL>alter session set container=TEST;
Session altered.
SQL>create tablespace pdb_test datafile
'/u01/app/oracle/oradata/db12c/TEST/test_pdb.dbf' SIZE 20M;
Tablespace created.
SQL>select tablespace_name, con_id from cdb_tablespaces order by con_id;
TABLESPACE_NAME CON_ID
------------------------------ ----------
SYSTEM 3
SYSAUX 3
TEMP 3
PDB_TEST 3
Same for temporary table space, next post i will provide another manage for pluggable database.
Reference:
1- oracle Documentation Here
2- Oracle Documentation Here