ARCHIVE_LAG_TARGET


Property Description

Parameter type

Integer

Default value

0 (disabled)

Modifiable

ALTER SYSTEM

Range of values

0 or any integer in [60, 7200]

Basic

No

Oracle RAC

Multiple instances should use the same value


ARCHIVE_LAG_TARGET forces a log switch after the specified amount of time elapses.

A 0 value disables the time-based thread advance feature; otherwise, the value represents the number of seconds. Values larger than 7200 seconds are not of much use in maintaining a reasonable lag in the standby database. The typical, or recommended value is 1800 (30 minutes). Extremely low values can result in frequent log switches, which could degrade performance; such values can also make the archiver process too busy to archive the continuously generated logs.

See Also:

Oracle Database Administrator's Guide for more information about setting this parameter