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Data Guard

Donald K. Burleson

Oracle Data GuardChapter 3 - Implementing Standby Databases

log_archive_trace

log_archive_trace values
16	Detailed archivelog destination activity
32	Archivelog destination parameter modifications
64	ARCn process state activity
128	FAL (fetch archived log) server related activities
256	Reserved for future releases
512	Asynchronous Log Writer activities
1024	Tracks RFS physical client
2048	Tracks the ARCn or RFS heartbeat

Table 3-1: log_archive_trace parameter values

The default behavior value is 0 or no archivelog tracing. A value of 7 represents tracing up to level 4. The log file will show the archival state of redo log files, the status of each archivelog destination, and the operational phases.

These parameters play an important role in the creation and working of standby databases. The standby control file created on the primary site should be copied to the directory pointed by the contol_files parameter. The Oracle instance MRP builds the filename from the log_archive_format parameter and checks the existence of this file in the standby_archive_dest directory.

The above text is an excerpt from the book: Oracle Data Guard Handbook

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