ORA-16631: operation requires shutdown of database or instance

On short, after upgrading one of my databases from 11203 to 11204, I’ve noticed that the standby database was in a DISABLED state: DGMGRL> show configuration Configuration – DG_CONFIG Protection Mode: MaxPerformance Databases: DB_PRI- Primary database DB_STANDBY – Physical standby database (disabled) Fast-Start Failover: DISABLED Configuration Status: SUCCESS I tried to set it…