Clone a pluggable database from another container and release

Below are the steps how to clone a pluggable database from another container. The steps are used during a migration from 12.1 to 12.2, but will also work for later releases.

  1. Create a Database link in the target container

Create a database link in the ROOT container and validate the link.

Perform the action in the target container.

SQL> select owner,db_link,host from dba_db_links;
SQL> create public database link tcdb01_LNK connect to system identified by yourpassword using 'tcdb01';

SQL> select db_unique_name from v$database@tcdb01_LNK;

  1. Clone pluggable database using database link

SQL> create pluggable database tpdb from tpdb@tcdb01_LNK standbys=NONE;

Pluggable database created.

In case of a standby we define the standbys=NONE clause, as in that case we want to update the standby in a later case.

Above is an example without any file name convertion.

In case you required to use file_name_convert the statement will look like this:

$ mkdir /u01/app/oracle/oradata/TPDB
SQL> create pluggable database TPDB from TPDB@tcdb01_LNK standbys=none
SQL> show pdbs
CON_ID     CON_NAME                       OPEN MODE  RESTRICTED

---------- ------------------------------ ---------- ----------
2          PDB$SEED                       READ ONLY  NO
4          TPDB                           MOUNTED

In case the pluggable is coming from an other release a upgrade is required.


  1. Open the pluggable database migrate
SQL> alter pluggable database tpdb open upgrade;

Pluggable database altered.

SQL> show pdbs

------- ------------------------ ---------- ----------
2       PDB$SEED                 READ ONLY  NO
4       TPDB                     MIGRATE    YES


  1. Upgrade the pluggable database

From the new ORACLE_HOME execute catctl using catupgrd.sql

$ORACLE_HOME/perl/bin/perl $ORACLE_HOME/rdbms/admin/ –c "TPDB" $ORACLE_HOME/rdbms/admin/catupgrd.sql


  1. Start pluggable database
SQL> alter session set container=tpdb;

Session altered.

SQL> startup

Pluggable Database opened.

SQL> show pdbs


------- ------------------------ ---------- ----------
4       TPDB                     READ WRITE NO

  1. Check options for the pluggable
SQL> select name,status,action,message from PDB_PLUG_IN_VIOLATIONS where cause='OPTION';

PENDING Fix the database option in the PDB or the CDB Database option RAC mismatch: PDB installed version CDB installed version NULL.
SQL> alter session set container=pluggable_name;

SQL> exec dbms_registry.OPTION_OFF('RAC');

SQL> shutdown immediate

SQL> startup
SQL> col name for a15

SQL> col status for a10

SQL> select name,status,action,message from PDB_PLUG_IN_VIOLATIONS where cause='OPTION' and status <> 'RESOLVED' and name <> 'PDB$SEED';

3 januari 2019|12c, Multitenancy, rdbms|

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