DBT-16088
Data Guard transport mode 'string' can not be updated on database 'string'.
Cause
The Data Guard protection mode is configured as '%s'. It is required to have minimum one standby database in synchronous transport mode (SYNC or FASTSYNC) in order to have Data Guard protection mode as MAX_AVAILABILITY.
Action
Either update the standby database transport mode to SYNC or FASTSYNC, or update the Data Guard protection mode.