故障数据库集群的相关内容

阿里云文档 2025-11-13

使用MasterNodeShutDownFailOver模拟指定节点故障触发主备切换-云数据库 Tair（兼容 Redis®）-阿里云

模拟云数据库 Tair（兼容 Redis）的指定数据节点或Proxy节点故障，实例将自动进行主备切换，保证高可用。

阿里云文档 2025-11-13

使用SwitchInstanceZoneFailOver模拟可用区级别故障切换-云数据库 Tair（兼容 Redis®）-阿里云

模拟云数据库 Tair（兼容 Redis）集群架构实例发生可用区级别故障，实例将自动切换到备可用区中。

阿里云文档 2025-04-28

独享型数据库代理支持故障切换下的连接保持功能

2024年08月01日起，在RDS MySQL数据库代理的2.9.1版本更新中，新增了对故障切换场景下的连接保持功能。降低了数据库连接中断的风险，提升了数据库连接的可靠性。

阿里云文档 2025-04-23

如何使用逻辑复制槽故障转移功能

PolarDB PostgreSQL版（兼容Oracle）的逻辑复制槽故障转移（Logical Replication Slot Failover）功能可以将所有的逻辑复制槽从主节点同步到Standby节点，从而实现逻辑复制槽的故障转移。

阿里云文档 2025-03-19

数据分片节点故障对请求成功率的影响

假设集群实例的数据分片数量为N，当其中1个数据分片节点发生故障时，该故障节点会启动主备切换，从故障发生至完成切换大约需要几秒到几十秒。在该过程中，访问该数据分片节点的请求均会失败，假设请求分布均匀，理论上该实例会有 1/N 的请求失败率。但存在以下原因，可能导致该过程中实际失败的请求数量高于理论值。...

文章 2025-03-17 来自：开发者社区

【YashanDB知识库】OM仲裁节点故障后手工切换方案和yasom仲裁重新部署后重新纳管数据库集群方案

一主一备数据库集群部署登录OM节点，上传软件包后解压，以/home/shuiwu/install路径为例 cd /home/shuiwu/install tar -zxf yashandb-22.2.2.0-linux-x86_64.tar.gz 安装参数调整 ./bin/yasboot package config gen --cluster yashandb -...

文章 2025-02-20 来自：开发者社区

【YashanDB 知识库】OM 仲裁节点故障后手工切换方案和 yasom 仲裁重新部署后重新纳管数据库集群方案

一主一备数据库集群部署登录 OM 节点，上传软件包后解压，以/home/shuiwu/install 路径为例 cd /home/shuiwu/install tar -zxf yashandb-22.2.2.0-linux-x86_64.tar.gz 安装参数调整 ./bin/yasboot package config gen --cluster yashand...

文章 2022-02-16 来自：开发者社区

Oracle 11g RAC Installer 故障之--数据库软件安装无法发现集群

错误案例： GRID进程启动正常，CRS资源全部online；但在安装Oracle 数据库软件时，不能发现集群环境！解决方法： Applies to: Oracle Database - Enterprise Edition - Version 10.2.0.1 to 11.2.0.2 [Release 10.2 to 11.2] Information in this document ...

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满足等保2.0二级和三级 “安全审计”合规要求的同时，智能解析数据库通信流量，细粒度审计数据库访问行为，通过对数据库全量行为的审计溯源、危险攻击的实时告警、风险语句的智能预警，提供数据库资产最安全的监控保障。

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