Why in dataguard standby side RFS, LNS, LGWR or ARCn generate large trace file without any errors or issues

Why in dataguard standby side RFS, LNS, LGWR or ARCn generate large trace file without any errors or issues?

My standby database side i observed trace files for rfs process are growing in GBs always.
its due to parameter log_archive_trace value set in instance level in standby side.

if log_archive_trace value set for non zero, the trace files size will grow. resolution is to set it to  zero value.

In my case, i can see the value is 255.

SQL> show parameter log_archive_trace

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
log_archive_trace                    integer     255

i set it to 0, its fixed the proble,.

SQL> alter system set log_archive_trace=0 scope=both;

System altered.

if you are using DB brocker. set this value also to consistent in instance level and DG brocker level.

DGMGRL> show instance 'ORCL' 'LogArchiveTrace';

  LogArchiveTrace = '255'

DGMGRL> edit instance 'ORCL' SET PROPERTY 'LogArchiveTrace'=0;

Property "LogArchiveTrace" updated

DGMGRL> show instance 'ORCL' 'LogArchiveTrace';

  LogArchiveTrace = '0'