文档解释
ORA-29706: incorrect value string for parameter ACTIVE_INSTANCE_COUNT
Cause: The ACTIVE_INSTANCE_COUNT parameter must be set to 1 in a two node cluster database configuration or unspecified if a secondary instance is not needed.
Action: Check your initialization parameter files and correct the value of the ACTIVE_INSTANCE_COUNT parameter. If you are configuring a two node primary/secondary cluster database, set this value to 1. Otherwise, do not specify any value for the parameter.
