12c archive_lag_targe強制日志切換

12c R1測試環境

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.

建議半個小時到1個小時切換一次，以下為了做實驗測試，設定了60秒。

本文轉自 roidba 51CTO部落格，原文連結：http://blog.51cto.com/roidba/2064983，如需轉載請自行聯系原作者