How to Plug non-CDB database to CDB database?
How to Plug non-CDB database oracle11g to CDB database?
This article is in continuation of my previous article i.e. Upgrade Oracle Database 11g to 12c .One can use below listing without referring to previous notes. Just make sure here I have used my non-CDB database name as ORCL11G because it was migrated from 11g to 12c without changing SID of the database.
NOTE: ORCL11G instance is now our new 12c upgraded database. We haven't change SID while upgrading our database.
There are several methods to migrate non-CDB database to PDB database.
1) Clone a Remote Non-CDB
2) Using DBMS_PDB
3) Using Data Pump (expdb, impdp)
4) Using Replication
Here I will use DBMS_PDB to migrate non-CDB to PDB.
Setp 1) Generate .xml file.
In this step, we will generate Plugabledbl11g.xml file, which we will used further to create PDB database.
- Connect to your non-CDB database. [In our case it is ORCL11G.]
- Shutdown the database
- Startup in read only mode
- Run DBMS_PDB.DESCRIBE to generate Plugabledbl11g.xml
Below is the listing for the same.
SQL> shu immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL>
SQL> startup open read only;
ORACLE instance started.
Total System Global Area 1610612736 bytes
Fixed Size 2924928 bytes
Variable Size 520097408 bytes
Database Buffers 1073741824 bytes
Redo Buffers 13848576 bytes
Database mounted.
Database opened.
SQL>
SQL> BEGIN
2 DBMS_PDB.DESCRIBE(pdb_descr_file => '/var/Plugabledbl11g.xml');
3 END;
4 /
PL/SQL procedure successfully completed.
SQL>
Step 2) Connect to an existing CDB and create a new PDB
Connect to an existing CDB and create a new PDB using the file describing the non-CDB database. Must use the FILE_NAME_CONVERT parameter to convert the existing files to the new location.
As you see in below screenshot, we are connected to “orcl” CDB container. “orcl” CDB container is already having PDBORCL as one PDB. We will add our recently upgraded database “orcl11g” in this CDB container as “Plugabledbl11g”.
Your can refer my previous article how to upgrade 11g to 12c. Click Here
Step 3) Create pluggable database PDBORCL11g
Create directory Plugabledbl11g under “/u01/aps/Oracle/oradata/orcl/” path, where all PDB’s data files be located in.
Now, run below command to create new PDB named as Plugabledbl11g
CREATE PLUGGABLE DATABASE Plugabledbl11g USING '/var/Plugabledbl11g.xml' COPY FILE_NAME_CONVERT = ('/u01/aps/Oracle/oradata/orcl11g/ORCL11G/','/u01/aps/Oracle/oradata/orcl/Plugabledbl11g/');
As you can see in above screenshot newly created PDB i.e. PDBORCL11G is on mounted state.
Step 4) Run script noncdb_to_pdb.sql
Now, Switch to the PDB container and run the "$ORACLE_HOME/rdbms/admin/noncdb_to_pdb.sql" script to clean up the new PDB, removing any items that should not be present in a PDB.
1) ALTER SESSION SET CONTAINER=Plugabledbl11g;
2) @$ORACLE_HOME/rdbms/admin/noncdb_to_pdb.sql
Above script output is attached here.
Step 5) Startup the PDB and check the open mode.
Now, Start the PDB and check the open mode.
1) ALTER SESSION SET CONTAINER=Plugabledbl11g;
2) ALTER PLUGGABLE DATABASE OPEN;
Here, we are done with migration from non-CDB to PDB of Oracle Database 12c.
Step 6) Check all PDBs and PMON Process.
Now check all PDB status from the root container
Check the Database processes
![]()
Our new Plugabledbl11g is now in read write mode. Now you can connect to your new PDB for your regular operations.
SQL> alter session set container=cdb$root;
Session altered.
SQL>
SQL> select con_id,dbid, name, open_mode from v$containers;
CON_ID DBID NAME OPEN_MODE
---------- ---------- ------------------------------ ----------
1 1441782042 CDB$ROOT READ WRITE
2 2980200325 PDB$SEED READ ONLY
3 85573530 PDBORCL READ WRITE
4 1021306567 Plugabledbl11g READ WRITE
4 rows selected.
SQL>
Check the Database processes
-bash-4.1$ ps -ef | grep pmon
db1212 10033 8449 0 12:46 pts/3 00:00:00 grep pmon
db1212 12145 1 0 Jun08 ? 00:00:37 ora_pmon_orcl
-bash-4.1$
