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parallel_degree_limit

更新时间：2026-04-10 11:58:37

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parallel_degree_limit 用于设置在使用 Auto DOP 策略时，优化器选择并行度的上限值。

说明

该变量从 V4.2.0 版本开始引入。

属性	描述
参数类型	uint
默认值	0 说明 0 表示对并行度不进行限制
取值范围	[ 0，9223372036854775807 ] 单位为并行度
生效范围	Global Session

示例

set parallel_degree_limit =256;

set global parallel_degree_limit =256;

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