Logical Standby Improvements
10g introduces many new enhancements to logical standby databases. New features discussed in this chapter include the following:
Zero downtime for instantiation
Support for redo log files
The PREPARE TO SWITCHOVER command
Support for SQL Apply services
Rolling database upgrades using SQL Apply
Enhanced commands and views that support logical standby database management
Zero Outage for Instantiation
In 10g Release 1 RMAN does not support the new logical standby control file.
Prior to Oracle 10g, the major limitation with logical standby was that DBAs had to accept some type of outage in order to complete the build. The creation of the logical standby required the primary database to be shut down completely or required ...