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ob_startup_mode

更新时间：2026-07-28 17:02:06

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说明

该配置项从 V4.1.0 版本开始引入。

功能描述

ob_startup_mode 用于设置 OBServer 节点的启动模式，仅支持在第一次启动时修改。

权限要求

查询配置项

sys 租户和所有用户租户均可以使用 SHOW PARAMETERS 语句或视图 GV$OB_PARAMETERS 查询该配置项。
修改配置项

仅支持在集群第一次启动时修改。

属性说明

属性	描述
参数类型	String
默认值	NORMAL
取值范围	`NORMAL`：表示以无共享（Shared-Nothing，SN）模式启动 `ARBITRATION`：表示以仲裁模式启动 `SHARED_STORAGE`：表示以共享存储（Shared-Storage，SS）模式启动，当前暂不支持该模式。说明 `SHARED_STORAGE` 值从 V4.3.4 版本开始引入。
是否可修改	否，不支持通过 `ALTER SYSTEM SET` 语句修改。
是否重启 OBServer 节点生效	否，仅支持只读。

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