The Oracle Database 12c: Interactive Quick Reference is a multimedia tool for various terms and concepts used in the Oracle Database 12c release. Built as a multimedia web page, this diagram provides descriptions of database architectural components, as well as references to relevant documentation. Use this helpful reference as a cheat sheet for writing custom data dictionary scripts, locating views pertinent to a specific database component or category, understanding the database architecture, and more.
This essential reference includes:
- DBA Views: Key DBA static data dictionary views and dynamic performance views organized by product feature areas
- Performance Views: Dynamic performance views organized by product feature areas. Click on a view and see the details for that view.
- Architecture Views: A single diagram that illustrates the relationships between key database dictionary views. Click on a view and see the definition for that view.
- Database Architecture: A single diagram that illustrates the relationships between key database memory structures, processes, and storage. Click on the diagram to find out detailed information.
- Multitenant Architecture: A single diagram that illustrates the architecture for a multitenant container database. Click on the diagram to find out detailed information.
- Background Processes: A comprehensive list that categorizes the background processes and flags which are new in Oracle Database 12c
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This tutorial covers the steps required to plug an unplugged pluggable database (PDB) from a container database (CDB) into another CDB.
Time to Complete
Approximately 20 minutes
You can disassociate or unplug a PDB from a CDB and reassociate or plug the PDB into the same CDB or into another CDB. This capability is suitable for the following situations:
- You have to upgrade a PDB to the latest Oracle version, but you do not want to apply it on all PDBs. Instead of upgrading a CDB from one release to another, you can unplug a PDB from one Oracle Database release, and then plug it into a newly created CDB from a later release.
- You want to test the performance of the CDB without a particular PDB. You unplug the PDB, test the performance without the PDB and, if necessary, replug the PDB into the CDB.
- You want to maintain a collection of PDB “gold images” as unplugged PDBs.
In this tutorial, you perform a PDB unplugging operation from a CDB. Next, you perform a plugging operation of the same PDB into another CDB by using SQL*Plus.
Different plugging scenarios are allowed:
- Plug the unplugged PDB by using the data files of the unplugged PDB. The unplugged PDB is disassociated from the source CDB.
- The source data files are used with or without any copy.
- The source data files are used after being moved to another location.
- Plug the unplugged PDB as a clone to:
- Allow developers and testers to rapidly and repeatedly provision a well-known starting state
- Support self-paced learning
- Provide a new way to deliver a brand-new application
Before starting this tutorial, you should:
- Install Oracle Database 12c.
- Create two CDBs with two PDBs in the first CDB.
The environment used in the development of this tutorial is as follows:
- ORACLE_HOME: /u01/app/oracle/product/12.1.0
- TNS Listener port: 1521
- Container databases:
- SID: cdb1
- SID: cdb2
- Pluggable databases (in cdb1):
This tutorial covers the steps to perform basic tasks on container databases (CDBs) and pluggable databases (PDBs).
Time to Complete
Approximately 45 minutes
This tutorial shows you how to:
- Connect to a CDB and to a PDB.
- Create a PDB from the seed PDB.
- Manage CDBs and PDBs.
- Start a CDB, understand the different open modes of PDBs, and shut down a CDB.
- Open and close PDBs.
- Change the name of a PDB.
- Manage the storage in a CDB and its PDBs.
- Manage permanent tablespaces.
- Manage temporary tablespaces.
- Manage the security in PDBs.
- Create common and local users.
- Create common and local roles.
- Grant common and local privileges.
- Drop PDBs.
Note: For readability, formatting was applied to some columns shown in the output.