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plan_cache_low_watermark

更新时间：2026-04-15 17:17:00

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说明

由于该配置项对应功能并未生效过，该配置项从 V4.2.0 版本开始删除。

功能描述

plan_cache_low_watermark 用于设置执行计划缓存占用内存的阈值，如果低于该阈值时将停止淘汰。

属性说明

属性	描述
参数类型	Capacity
默认值	1500M，默认单位为 MB，配置时需说明单位。
取值范围	[0, plan_cache_high_watermark)
是否重启 OBServer 节点生效	否

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