How does Oracle12c connect to CDB and PDB?

How does Oracle12c connect to CDB and PDB?

1 connect to CDB

Same as a normal instance. After specifying ORACLE_SID, you can use OS authentication or password for connection.

[Oracle @ Ora12c/] $ echo $ ORACLE_SID

Cndba

[Oracle @ Ora12c/] $ sqlplus/as sysdba

SQL * Plus: Release 12.1.0.1.0 Production onMon Apr 28 11:33:43 2014

Copyright (c) 1982,201 3, Oracle. All rights reserved.

Connected:

Oracle Database 12c Enterprise EditionRelease 12.1.0.1.0-64bit Production

With the Partitioning, OLAP, AdvancedAnalytics and Real Application Testing options

SQL> conn system/oracle

Connected.

SQL>

-- View available services in CDB:

SQL> COLUMN name FORMAT A30

SQL> SELECT name, pdb

2 FROM v $ services

3 order by name;

NAME PDB

------------------------------------------------------------

SYS $ background cdb $ ROOT

SYS $ users cdb $ ROOT

Cndba CDB $ ROOT

CndbaXDB CDB $ ROOT

Pcndba2 PCNDBA2

Pdbcndba PDBCNDBA

6 rows selected.

-- Lsnrctl can also be used to determine:

[Oracle @ Ora12c/] $ lsnrctl service

LSNRCTL for Linux: Version 12.1.0.1.0-Production on 28-APR-2014 11:35:31

Copyright (c) 1991,201 3, Oracle. All rights reserved.

Connecting to (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC) (KEY = EXTPROC1521 )))

Services Summary...

Service "cndba" has 1 instance (s ).

Instance "cndba", status READY, has 1 handler (s) for thisservice...

Handler (s ):

"DEDICATED" established: 0 refused: 0 state: ready

LOCAL SERVER

Service "cndbaXDB" has 1 instance (s ).

Instance "cndba", status READY, has 1 handler (s) for thisservice...

Handler (s ):

"D000" established: 0 refused: 0 current: 0 max: 1022 state: ready

DISPATCHER <machine: Ora12c, pid: 10085>

(ADDRESS = (PROTOCOL = tcp) (HOST = Ora12c) (PORT = 14696 ))

Service "pcndba2" has 1 instance (s ).

Instance "cndba", status READY, has 1 handler (s) for thisservice...

Handler (s ):

"DEDICATED" established: 0 refused: 0 state: ready

LOCAL SERVER

Service "pdbcndba" has 1 instance (s ).

Instance "cndba", status READY, has 1 handler (s) for thisservice...

Handler (s ):

"DEDICATED" established: 0 refused: 0 state: ready

LOCAL SERVER

The command completed successfully

[Oracle @ Ora12c/] $

Through these services, you can remotely connect to CDB.

-- EZCONNECT

C: \ Users \ Dave> sqlplussystem/oracle@192.168.1.10: 1521/cndba

SQL * Plus: Release 11.2.0.1.0 Production on Wednesday April 30 11:36:48 2014

Copyright (c) 1982,201 0, Oracle. All rights reserved.

Connect:

Oracle Database 12c Enterprise EditionRelease 12.1.0.1.0-64bit Production

With the Partitioning, OLAP, AdvancedAnalytics and Real Application Testing options

SQL>

-- Connect through TNSNAMES. ORA:

Configure tnsnames. ora as follows:

Cndba =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.1.10) (PORT = 1521 ))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = cndba)

)

)

-- Connection:

C: \ Users \ Dave> sqlplussystem/oracle @ cndba

SQL * Plus: Release 11.2.0.1.0 Production on Wednesday April 30 11:40:01 2014

Copyright (c) 1982,201 0, Oracle. All rights reserved.

Connect:

Oracle Database 12c Enterprise EditionRelease 12.1.0.1.0-64bit Production

With the Partitioning, OLAP, AdvancedAnalytics and Real Application Testing options

SQL>

2. Switch between different iner Databases

In the 12c architecture, because CDB and PDB exist, there are many different iner, so when connecting to different container, you need to switch.

-- View the current iner:

SQL> show con_name

CON_NAME

------------------------------

CDB $ ROOT

SQL> SELECT SYS_CONTEXT ('userenv', 'Con _ name') FROM dual;

SYS_CONTEXT ('userenv', 'Con _ name ')

--------------------------------------------------------------------------------

CDB $ ROOT

SQL & gt; set lin 140

SQL> select con_id, dbid, guid, name, open_mode from v $ pdbs;

CON_ID dbid guid name OPEN_MODE

------------------------------------------------------------------------

2 4088301206 F7C1E3C96BBF0585E0430A01A8C05459 PDB $ SEED READ ONLY

3 listen 143573f7c209eb1dfc0854e0430a01a8c0b787 PDBCNDBA READ WRITE

4 1231796139 F812DE1B6A8F363AE0430A01A8C0C759 PCNDBA2 READ WRITE

-- Switch container:

SQL> alter session setcontainer = pcndba2;

Session altered.

SQL> show con_name

CON_NAME

------------------------------

PCNDBA2

3 connect to PDB

-- EZCONNECT:

C: \ Users \ Dave> sqlplussystem/oracle@192.168.1.10: 1521/pcndba2

SQL * Plus: Release 11.2.0.1.0 Production on Wednesday April 30 11:54:30 2014

Copyright (c) 1982,201 0, Oracle. All rights reserved.

Connect:

Oracle Database 12c Enterprise EditionRelease 12.1.0.1.0-64bit Production

With the Partitioning, OLAP, AdvancedAnalytics and Real Application Testing options

SQL>

-- TNSNAMES. ora

Add the following content to tnsnames. ora:

Pcndba =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.1.10) (PORT = 1521 ))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = pcndba2)

)

)

C: \ Users \ Dave> sqlplussystem/oracle @ pcndba

SQL * Plus: Release 11.2.0.1.0 Production on Wednesday April 30 11:55:50 2014

Copyright (c) 1982,201 0, Oracle. All rights reserved.

Connect:

Oracle Database 12c Enterprise EditionRelease 12.1.0.1.0-64bit Production

With the Partitioning, OLAP, AdvancedAnalytics and Real Application Testing options

SQL>

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Note: The relationship between tablespaces and data files must be specified for grouping. | do not add groups repeatedly.

CNDBA_1: 104207940 (full) CNDBA_2: 62697716 (full) CNDBA_3: 283816689

CNDBA_4: 391125754 CNDBA_5: 62697850 CNDBA_6: 62697977 CNDBA_7: 142216823 (full)