Changes in This Release for Oracle Database Global Data Services Concepts and Administration Guide

This preface contains:

• Changes in Oracle Database 18c Release 1 (18.1)
  
• Changes in Oracle Database 12c Release 2 (12.2.0.1)
  

Changes in Oracle Database 18c Release 1 (18.1)

The following are changes in Oracle Database Global Data Services Concepts and Administration Guide for Oracle Database 18c Release 1 (18.1)

• New Features
  

New Features

The following features are new in this release:

• ADD SHARD is extended and new commands ADD CDB, MODIFY CDB, CONFIG CDB, and REMOVE CDB are implemented so that Oracle Sharding can support a multitenant architecture.

  See add shard, add cdb, modify cdb, config cdb, and remove cdb.

• With the release of Oracle GoldenGate 18c, the composite sharding method is supported with GoldenGate replication. The add shardgroup and create shardcatalog command documentation is updated accordingly.

  See add shardgroup and create shardcatalog.

Changes in Oracle Database 12c Release 2 (12.2.0.1)

The following are changes in Oracle Database Global Data Services Concepts and Administration Guide for Oracle Database 12c Release 2 (12.2.0.1).

• New Features
  

New Features

The following features are new in this release:

• Oracle Sharding

  Oracle Sharding is a scalability and availability feature that supports distribution and replication of data across a pool of discrete Oracle databases that share no hardware or software. In this release, global service managers are used as shard directors which route connection requests to individual shards, the GDS catalog is extended to support a shard catalog which contains the metadata for the sharded database, and GDSCTL is enhanced with several new commands to facilitate the creation, monitoring, and lifecycle management of a sharded database.

  See GDSCTL Commands Used For Oracle Sharding