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19C New features for oracle database admins


19C New features:

1)
Ability to Create a Duplicate of an Oracle Database Using DBCA in Silent Mode
You can now create a duplicate of an Oracle Database by using the createDuplicateDB command of Database Configuration Assistant (DBCA) in silent mode.

2)
Ability to Relocate a PDB to Another CDB Using DBCA in Silent Mode
You can now relocate a pluggable database (PDB) to another multitenant container database (CDB) by using the relocatePDB command of Database Configuration Assistant (DBCA) in silent mode.

This feature enables automating the PDB life cycle operation of relocating a PDB using DBCA in silent mode.


3)
Ability to Create a PDB by Cloning a Remote PDB Using DBCA in Silent Mode
You can now create a pluggable database (PDB) by cloning a remote PDB using the createFromRemotePDB parameter of the createPluggableDatabase command of Database Configuration Assistant (DBCA) in silent mode.

This feature enables automating the PDB life cycle operation of cloning a PDB using DBCA in silent mode.

4)
Simplified Image-Based Oracle Database Client Installation
Starting with Oracle Database 19c, the Oracle Database client software is available as an image file for download and installation. You must extract the image software into a directory where you want your Oracle home to be located, and then run the runInstaller script to start the Oracle Database client installation. Oracle Database client installation binaries continue to be available in the traditional format as non-image zip files.

As with Oracle Database and Oracle Grid Infrastructure image file installations, Oracle Database client image installations simplify Oracle Database client installations and ensure best practice deployments.

5)
Root Scripts Automation Support for Oracle Database Installation
Starting with Oracle Database 19c, the database installer, or setup wizard, provides options to set up permissions to run the root configuration scripts automatically, as required, during a database installation. You continue to have the option to run the root configuration scripts manually.

Setting up permissions for root configuration scripts to run without user intervention can simplify database installation and help avoid inadvertent permission errors.

6)
Support for Dry-Run Validation of Oracle Clusterware Upgrade
Starting with Oracle Grid Infrastructure 19c, the Oracle Grid Infrastructure installation wizard (gridSetup.sh) enables you to perform a dry-run mode upgrade to check your system’s upgrade readiness.

In dry-run upgrade mode, the installation wizard performs all of the system readiness checks that it would perform in an actual upgrade and enables you to verify whether your system is ready for upgrade before you start the upgrade. This mode does not perform an actual upgrade. It helps anticipate potential problems with the system setup and avoid upgrade failures.


7) Automatic Indexing  - Automatic indexing automatically creates, rebuilds, and drops indexes in a database based on the changes in application workload Runs the automatic indexing process in the background periodically at a predefined time interval.

8) Real-Time Statistics - Oracle Database automatically gathers online statistics during conventional DML operations.

9) Active Data Guard DML Redirection => ACTIVE DATA GUARD DML REDIRECTION is new feature in Oracle 19c which is enable Data Manipulation Language (DML) operations on the standby server to be redirect and run on the production (Primary) database. The updated data will be streamed back to the standby to maintain redundancy.

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