Creating a logical standby database
As mentioned, a physical standby database is needed to create a logical standby database. It is assumed that we have a Data Guard configuration with a primary and one or more physical standby databases, which are synchronized with the primary. In order to create a logical standby database, we should first check the primary and the physical standby databases and make them ready for a logical standby conversion. These configurations are as follows:
Stopping the media recovery on the standby
Configuring primary database initialization parameters to be ready for a logical standby role transition
Building the LogMiner dictionary on the primary
If standby is RAC, converting it to a single instance temporarily
After completing these tasks, we continue the process of converting the physical standby into a logical standby with the following tasks:
Recovering the standby to the SCN that the LogMiner dictionary was built with
Re-enabling RAC on the standby if it exists
Modifying...
