In this Article, we will see how we can open a Pluggable Database in different modes and changing the setting of particular pdb.

Pluggable Database Modes :

  1. Open Pluggable Database in Restricted Mode

First what is restricted mode : All user having create session privilege can connect to normally opened database. But when your database is opened in restricted mode you need special privilege called  restricted session .

You need both Create a session and restricted session privilege to connect with the database if it is opened in restricted mode.

Generally only DBA have this permission.

Now to open a database in restricted mode use following steps.

After opening pdb in a restricted mode you can see in shows PDBs you can see YES in the Restricted state.

Open Pluggable Database in Read-Only Mode

Check open_mode of a pluggable database in v$pdbs

To open a pluggable database in fully updatable mode use following command

Above statement will open a pluggable database in read-write mode

*Modifying PDB Settings

We can do the following task with PDBs.

  1. You can make datafile offline or online.

2. Changing the default tablespace

3. Setting the storage limit for a pluggable database

Above are an example we can set in a pluggable database.

Stay tuned for More articles on Oracle Multitenant

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