How do I duplicate a CDB?

How do I duplicate a CDB?

Duplicate the Source CDB to a New Encrypted CDB

1. Launch rman to create a connection to the auxiliary CDB instance that will be the new duplicated CDBENC CDB and to the source (RMAN target) ORCL that will be duplicated.
2. Before you start the duplication process, set the decryption on.
3. Start the duplication process.

How do you clone a PDB in 18c?

Cloning a 12.1 PDB into Oracle 18c In the source CDB1 I create a fresh PDB first, then open it and create a cloning user with the necessary privileges. In the destination CDB2 I create a database link to the source PDB using the user’s context – and then I clone without setting the source into read-only mode.

How do I drop a PDB database?

DROP PLUGGABLE DATABASE

1. Semantics.
2. pdb_name. Specify the name of the PDB you want to drop.
3. KEEP DATAFILES.
4. INCLUDING DATAFILES.
5. Restriction on Dropping SNAPSHOT COPY PDBs If a PDB was created with the SNAPSHOT COPY clause, then you must specify INCLUDING DATAFILES when you drop the PDB.

What is Refreshable PDB?

Refreshable PDB is a new feature introduced in Oracle database from 12.2 onwards i.e 12.2/18c/19c . That is, a database from which individual developers take clones – typically, and most efficiently snapshot clones (which can be created in seconds or minutes even for very large databases).

How do I clone an Oracle database using RMAN on another server?

Steps to clone a database using RMAN:

1. Create a password file on the destination server.
2. Establish connectivity between the target and destination server (tnsnames.ora, sqlnet.ora)
3. Create the directories for the database files.
4. Take the RMAN backup from the target server and copy it to the destination server.

How do I restore a dropped pluggable database?

MOS Note: 2034953.1 How to Restore Dropped PDB in Multitenant

1. Create an auxiliary container database.
2. Recover the backup (yes, you will have to have a backup of your container database) including this particular PDB.
3. Unplug the PDB after recovery has been finished and plug it back into the original CDB.

How do I drop PDB from CDB?

Drop Pluggable Database using DBCA

1. Connect to container root and check current pluggable databases.
2. Execute DBCA.
3. Select Delete a Pluggable Database click Next.
4. Select the container database from where you will drop the pluggable database and click Next.

How do you refresh a pluggable database?

The refresh mode can be altered after the refreshable PDB is created, as shown below. — Alter the refresh interval. ALTER PLUGGABLE DATABASE pdb5_ro REFRESH MODE EVERY 60 MINUTES; ALTER PLUGGABLE DATABASE pdb5_ro REFRESH MODE EVERY 120 MINUTES; — Set an automatically refreshed PDB to manual mode.

How do I refresh PDB?

After creating the Clone PDB, you can refresh the PDB with updates that occurred in the source database, by applying the redo that accumulated since the last redo log apply. This is called a Refreshable Clone PDB. This feature was introduced in 12.2 and it has been improved since.

How to clone a PDB to a CDB?

Create one CDB with one PDB in it. In this section, you prepare the source PDB to be cloned and the target new PDB to be created. Use SQL*Plus to close the PDB that you want to clone. Open the PDB that you want to clone in READ ONLY mode. Navigate to /stage or wherever you can find enough available space to store the data files for pdb1_clone .

Is it possible to clone a remote PDB in Oracle?

It is possible to initiate and complete a clone without putting the source database into read-only mode, but this sometimes results in an ORA-00600. Since it is not documented, you should not do this in a real system. Connect to the remote CDB and prepare the remote PDB for cloning.

Can a PDB be relocated to an application container?

You can relocate a PDB into an application container as an application PDB. The target PDB can be in the same CDB or a different CDB. You can relocate an application PDB from one application root to another. The target PDB can be in the same CDB or a different CDB.

How does a snapshot copy of a PDB work?

A snapshot copy PDB does not include a complete copy of the source data files. Rather, Oracle Database creates a storage-level snapshot of the underlying file system, and then creates the clone PDB from the snapshot. Unlike a standard clone PDB, the snapshot copy PDB is dependent on the storage snapshot.