New Features in Oracle Multitenant 19c
- Enhancements to database-managed PDB snapshots
When the initialization parameter CLONEDB is TRUE, database-managed snapshots create sparse copies of the data files of the source PDB. Starting in Oracle Database 19c, you can create database-managed snapshot clone PDBs from a source PDB that is open read/write. In previous releases, the source PDB needed to remain read-only and unchanging for the lifetime of any snapshot clone PDB.
- Workload capture and replay in a PDB
A local user can capture, replay, and report on a workload at the PDB level.
- ADDM analysis for PDBs
You can use ADDM to analyze AWR data stored inside the PDB through an AWR snapshot taken inside the PDB. You can also analyze AWR data of a non-CDB, CDB root, or PDB imported into the AWR storage of a PDB. Automatic ADDM of a PDB is disabled by default. You can enable it for a PDB by enabling automatic AWR snapshots.
- Support for multiple PDB shards in the same CDB
A single CDB can contain multiple PDBs as shard catalog databases. Also, a CDB can contain shard PDBs from different sharded databases (SDBs), each managed by its own separate catalog database.
- Fine-grained single-instance PDB patching
In Oracle Grid Infrastructure, you can use Rapid Home Provisioning to automate relocation of a PDB from one CDB to another.
- Cloning a remote PDB using DBCA
You can clone a remote PDB using DBCA in silent mode.
- Remote PDB relocation
You can use Database Configuration Assistant (DBCA) to relocate a PDB from a remote CDB to a local CDB.
- Cloud object store support for Data Pump Import
The credential parameter of impdb specifies the name of a credential object that contains the user name and password required to access an object store bucket. You can also specify a default credential using the database property DEFAULT_CREDENTIAL.
- Database Vault Operations Control for infrastructure database administrators
You can use Oracle Database Vault to block common users (for example, infrastructure DBAs) from accessing local data in PDBs. Thus, common users are blocked from accessing local data. It enables you to store sensitive data for your business applications and allow operations to manage the database infrastructure without having to access sensitive customer data.
출처 : http://oracle-help.com/articles/new-features-in-oracle-multitenant-19c/