Tracing Oracle Data Guard

 Tracing can also be enabled in dataguard using the parameter "Log_Archive_Trace"

The values can be set using DG-Broker (if configured) or at SQL prompt as below.

     // Tracing primary site 

DGMGRL> edit database 'primary_db_name' set property LogArchiveTrace='1';

    // Tracing standby site

DGMGRL> edit database 'standby_db_name' set property LogArchiveTrace='1';

Also this parameter can be set by issuing a SQL statement :

SQL> ALTER SYSTEM SET LOG_ARCHIVE_TRACE=1;

dgmgrl  -debug / shutdown command  will shutdown instance, generate trace file and then exit. Tracefiles will be generated in the specific dump location.

Values for LOG_ARCHIVE_TRACE are described in table bellow:

Level	Meaning
0	Disables archived redo log tracing (default setting)
1	Tracks archiving of log files
2	Tracks archive status by archive log file destination
4	Tracks archive operational phase
8	Tracks archive log destination activity
16	Tracks detailed archive log destination activity
32	Tracks archive log destination parameter modifications
64	Tracks ARCn process state activity
128	Tracks FAL server process activity
256	Tracks RFS Logical Client
512	Tracks LGWR redo shipping network activity
1024	Tracks RFS physical client
2048	Tracks RFS/ARCn ping heartbeat
4096	Tracks real-time apply activity
8192	Tracks Redo Apply activity (media recovery or physical standby)