DBA晨报·第33期|Oracle+Google AI数据库Agent发布、达梦四款新品详解、PG 19内核REPACK解读
Clyde Jin
04-28
DBA
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DBA晨报·第33期|Oracle+Google AI数据库Agent发布、达梦四款新品详解、PG 19内核REPACK解读

为你摘取技术圈值得关注的3件事。今天是2026年4月28日,星期二。

01 战略合作|Oracle与Google Cloud发布AI数据库Agent:自然语言交互,企业数据查询进入对话时代

4月22日,Oracle与Google Cloud宣布扩大合作伙伴关系,联合发布Oracle AI Database Agent for Gemini Enterprise,这是一款支持用自然语言与企业数据进行交互的AI工具。

核心能力

能力维度 说明
自然语言查询 用户可使用日常英语提问,无需编写SQL语句
数据库层AI注入 AI能力直接应用于数据库层,而非外部服务调用
严格数据治理 保持企业级安全管控,敏感信息持续受保护
上下文感知Agent 支持复杂的Agentic工作流

应用场景

  • 收入趋势分析:自然语言提问“上季度各区域收入变化”,自动生成查询
  • 运营指标监控:随时询问关键运营数据
  • 业务流程自动化:结合AI Agent实现端到端自动化

早期采用者

全球领先的组织已开始采用这些能力:

客户 应用方式
Worldline(支付服务商) 在Google Cloud上使用Oracle Exadata服务,支撑全球级高吞吐、低延迟交易处理
AI Shift(日本AI子公司) 利用新Agent帮助企业打通数据与可操作智能的鸿沟,加速营销、客服等场景决策

DBA视角

Oracle与Google Cloud的深度合作标志着数据库巨头与云厂商从竞争走向协同进入新阶段。对于DBA而言:

  • 自然语言查询的普及可能改变数据访问模式——业务用户可直接提问,减少对DBA的SQL编写依赖
  • 但底层优化仍然关键:AI生成的SQL可能存在性能问题,仍需DBA介入调优
  • 多云战略:Oracle数据库在Google Cloud上的原生支持,为企业提供了更多云选择

建议关注该Agent的SQL生成质量,以及与企业现有数据治理体系的集成能力。

02 新品详解|达梦数据发布四款战略新品:DM9领衔,全面拥抱AI原生数据库时代

4月22日,在2026中国数据库技术与产业大会上,达梦数据集中发布了四款战略新品,全面覆盖集中式、分布式、云原生、一体机、图数据库等核心场景。

市场背景

赛迪顾问副总裁宋宇在大会上披露:2025年中国数据库市场规模达430.2亿元,国产厂商市场占有率已领先国外厂商,达梦数据保持国产厂商第一名

北京大学教授梅宏评价称,以达梦为代表的企业已支撑起金融、电力、交通等核心场景的规模化应用,证明中国基础软件产业在关键业务中具备了“稳得住、扛得住”的实力。

四款战略新品一览

产品 定位 核心亮点
达梦数据库管理系统DM9 AI时代旗舰产品 集中式与分布式一体化架构,内置数据库设计智能体和运维智能体;450余项新特性升级;100%核心源代码自主研发
DAMENG PAI V2.0 新一代数据库一体机 IOPS起步1200万,向量数据检索性能提升超10倍,20亿行大表扫描性能提升超50倍,单次I/O时延降至80微秒
达梦启云数据库V4.0 云原生数据库 AI智能运维(参数调优、根因分析、SQL优化、自动扩容)、跨云跨芯混合容灾、异构算力统一调度
图数据库GDMBASE V4.0 图数据库 图原生+向量一体化架构,十亿级点边混合检索<500ms,检索召回率提升30%,幻觉率降低60%,支撑超千亿级别图数据存储

DM9核心技术能力深潜

架构一体化:一套代码根,两种部署模式(集中式/分布式),极大降低企业数字化转型门槛。

高可用增强:达梦自治容灾集群实现自动故障感知与自愈切换。

多租户技术:租户级的数据和负载可整体在线搬迁上云、下云。

AI融合:支持向量与多模,内置数据库设计智能体和运维智能体。

AI战略发布

达梦数据副总经理冯源发布了企业全新AI战略,从OLAP和OLTP两大市场进行展望。经过数十年研发投入,达梦数据已在大规模分布式数据库系统、多模态数据库技术、多租户能力、内存键值数据库、实时同步系统、图数据库等多项技术上有了深厚积累。

标杆应用成果

客户 应用效果
中国联通ERP系统 全栈创新升级,性能提升40%-50%,全国31省业务全覆盖
福州市第一总医院 8个院区核心系统改造,CPU占用率仅3%,零重大宕机
香港政务平台 “无体感”替换及AI数据精准管控,推动国产数据库落地香港相关部门

生态建设

会上正式启动国产数据库产学研创新联合体,同时发布网信生态共同体暨达梦数据生态品牌“梦享会”

DBA视角

DM9的正式发布标志着国产数据库头部厂商全面进入“AI原生”竞争阶段。建议DBA关注:

  • 技术路线:DM9的“集中式+分布式一体化”架构理念
  • AI能力:内置智能体和运维智能体的实际效果
  • 生态成熟度:“梦享会”生态品牌发布,达梦正从产品型公司向平台型公司转型

达梦数据董事长冯裕才表示,公司核心源代码实现100%全自主研发,未来将持续深耕AI与数据库深度融合、云原生、分布式、图计算等前沿技术,打造中国的世界级数据库品牌。

03 版本前瞻|PostgreSQL 19内核化REPACK:自治索引填补最后拼图,表膨胀治理进入新时代

PostgreSQL 19开发周期已于2026年4月8日正式功能冻结,预计2026年9月正式发布GA版本。多位PG技术专家近期对PG 19的核心特性进行了解读。

核心亮点:REPACK CONCURRENTLY进入内核

历史痛点:PostgreSQL没有Undo回滚段,所有垃圾都放在数据文件里,需要不断做垃圾回收(VACUUM)。一旦表膨胀,存储成本上升、查询性能下降。此前只能通过第三方pg_repack插件解决。

PG 19方案:将REPACK CONCURRENTLY做到内核里,以后可以很放心地使用,不用担心第三方工具的兼容和维护问题。

其他关键特性

1. 图查询:AI Agent标配能力

AI时代,Agent会积累大量记忆并连接外部知识库,这些数据往往是树状或图结构。此前PG只能提供向量搜索、关键词搜索,企业需要额外搭建图数据库,导致数据重复和同步复杂。

PG 19将图查询功能引入内核,在AI场景存储记忆、存储外部知识库方面提供了原生支持。“将来的AI应用在使用数据库的时候,都可能把这块功能给用起来。”

2. VACUUM性能优化

当一个大表有很多索引时,此前每个索引是顺序地做垃圾回收。PG 19的autovacuum可以并行地对多个索引同时做垃圾回收,大大缩短垃圾回收总时间。

3. STANDBY WAIT FOR:解决读写分离一致性问题

读写分离场景下,只读库不知道回放进度,可能未同步主库的最新写入,导致查询结果不一致。以前只能把压力压到主节点。

PG 19的WAIT FOR特性,可以在做读写分离时预判只读节点是否已同步之前写入的事务,检查回放进度LSN,回放到了再将请求转发给只读节点。

4. 逻辑复制功能完善

支持复制序列(SEQUENCE),此前这一功能是缺失的。

企业升级策略

专家建议遵循“痛点驱动升级”原则:

场景 建议版本 理由
云部署 + 大I/O操作 PG 18 异步I/O带来巨大性能提升
表膨胀困扰 PG 19 内核级REPACK更稳定、更放心
AI Agent + 知识图谱 PG 19 原生图查询能力
传统企业 暂缓升级 等到有明确痛点再升级

DBA视角

PG 19将REPACK能力内核化,是DBA治理表膨胀的“官方解决方案”。结合图查询和VACUUM并行化,PG 19在AI场景和运维效率上都迈出了重要一步。

建议:对于正在构建AI Agent应用的团队,PG 19的图查询能力值得重点关注;对于饱受表膨胀困扰的生产环境,PG 19成熟后可考虑升级。

📌 本期结语:Oracle与Google Cloud联合发布AI数据库Agent,自然语言查询时代加速到来;达梦数据四款新品齐发,国产数据库头部厂商全面拥抱AI原生;PG 19内核化REPACK解决表膨胀痛点,图查询为AI Agent铺路。祝各位DBA今日工作顺利!

DBA晨报·第33期|2026年4月28日

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