Synchronized Database Service Functionality

This section, describing SDS functionality, contains the following topics.

• Database Roles in a Synchronized Database Environment

  • Primary Database Role

  • Secondary Database Role

  • Subroles

• Synchronizing with a Primary

• Delayed Replay

• Deferring SDS Transactions

• Version Information

• Security and Authentication

• SDS Takeover Operations

  • Negotiated Takeovers

  • Hostile Takeovers

  • Considerations before Performing a Takeover

  • Preparing for a Takeover Operation

  • Performing a Negotiated Takeover

  • Performing a Hostile Takeover

• Backing Up and Restoring Secondary Databases

  • Quiesced Database Backup

  • Online Database Backup

  • Offline Database Backup

• Creating a Secondary Database from an Online Backup of a Primary Database

• Reorganizing an SDS Database

For details, see the following subsections.