-stb
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;

-pri
EXECUTE DBMS_LOGSTDBY.BUILD;

-stb
ALTER DATABASE RECOVER TO LOGICAL STANDBY TERRAN;
ALTER DATABASE OPEN RESETLOGS;
ALTER DATABASE START LOGICAL STANDBY APPLY;
select * from v$managed_standby;
ps -ef | grep lsp
select * from v$logstdby_stats;