Oracle Dataguard || How to fix archive lag time span from primary to standby in oracle database 12c

Опубликовано: 01 Январь 1970
на канале: Oracle Database Solutions
1,909
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How to fix archive lag time span from primary to standby in oracle database 12c.
Oracle dataguard standby system.

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Will fix archive lag in standby using parameter ARCHIVE_LAG_TARGET

Solution: - youtube

set archive_lag_target parameter -Dynamic

to disable time based log switching - set to 0 - default
enable set to greater than 0
set to low - value, can be negative impact on performance.
by frequent log switches.
Not applicable in PDB
In RAC,must use same value in every instance.
range 0 or [60-7200]

eg: 30mins = 1800 secs

alter system switch archive_lag_target=600 scope=both;

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Note:
The current log was created prior to n seconds ago, and the estimated archival time for the current log is m seconds (proportional to the number of redo blocks used in the current log), where n + m exceeds the value of the ARCHIVE_LAG_TARGET initialization parameter.


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