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为什么实时灾备任务不支持触发器(TRIGGER)和事件(EVENT) 数据库的触发器(TRIGGER)和事件(EVENT)操作会记录binlog,DRS通过解析binlog同步数据,如果业务侧写入与触发器、事件存在同样对象,就会发生重复执行导致数据不一致或者任务失败,所以在灾备场景下,触发器和事件是不支持的。
增量阶段失败报错,关键词“Failed to read file header from” 场景描述 增量迁移或同步期间DRS任务报错,日志提示信息:service INCREMENT failed, cause by: Failed to read file header from
增量同步失败报错,关键词“remaining connection slots are reserved” 场景描述 增量同步期间DRS任务报错,同步日志界面提示:service INCREMENT failed, cause by: Unable to connect to DBMS:
全量阶段失败报错,关键词“CANNOT UPDATE USER WITH NULL PASSWORD” 场景描述 全量迁移或同步期间DRS任务报错,日志提示信息:service DATAMOVE failed, cause by: retry structures failed events=the
增量同步失败报错,关键词“Failed to construct kafka producer. ” 场景描述 Oracle->Kafka同步任务增量阶段报错,同步日志界面提示:service INCREMENT failed, cause by: Failed to construct
增量同步失败报错,关键词“Topic *** not present in metadata after 300000 ms” 场景描述 Oracle->Kafka同步任务增量阶段报错,同步日志界面提示: service INCREMENT failed, cause by: Topic
增量迁移失败报错,关键词“Command failed with error *** (***):***. The full response is {***}” 场景描述 MongoDB->DDS实时迁移场景,增量迁移报错,日志提示信息:service INCREMENT failed
增量阶段失败报错,关键词“You have an error in your SQL syntax” 场景描述 增量迁移或同步期间DRS任务报错,日志提示信息:service INCREMENT failed, cause by: You have an error in your
全量阶段失败报错,关键词“Access denied for user *** to database ***” 场景描述 全量迁移或同步期间DRS任务报错,日志提示信息:service DATAMOVE failed, cause by: retry structures failed
全量阶段失败报错,关键词“error when split table shard occur!” 场景描述 全量迁移或同步期间DRS任务报错,日志提示信息:service DATAMOVE failed, cause by: error when split table shard
增量阶段失败报错,关键词“Can't find file: *** (errno: 2 - No such file or directory)” 场景描述 增量迁移或同步期间DRS任务报错,日志提示信息:service INCREMENT failed, cause by: Can't
全量迁移失败报错,关键词“Timed out after 60000 ms while waiting to connect” 场景描述 MongoDB->DDS实时迁移场景,全量迁移报错,日志提示信息:service DATAMOVE failed, cause by: [reason]:Failed
全量或增量阶段失败报错,关键词“Access denied for user ***” 场景描述 全量或增量阶段,DRS迁移或同步任务报错,日志提示信息:service %s failed, cause by: Unable to connect to DBMS: url=***
源库参数lower_case_table_names=1时,为什么不允许迁移包含大写字母的库或者表 场景描述 当源库参数lower_case_table_names=1时,无法迁移包含大写字母的库或者表。 问题分析 当源库的lower_case_table_names 参数值为1
对比任务报错,关键词“失败报错:service SDV failed! cause by: the size of records in one shard[ *** ] of target database, exceeds the max size 200000” 操作场景
全量或增量迁移失败报错,关键词“Timed out after 60000 ms while waiting to connect” 场景描述 MongoDB->DDS实时迁移场景,全量或增量迁移报错,日志提示信息:service LOGMANAGER failed, cause
增量同步失败报错,关键词“Source supplemental log level is PK/UI. Missing column data at delete+insert on ***” 场景描述 Oracle->PostgreSQL、GaussDB(DWS)、Gauss
全量或增量阶段失败报错,关键词“service *** failed, cause by: Unable to connect to DBMS: ***” 场景描述 全量或增量阶段,DRS迁移或同步任务报错,日志提示信息:service *** failed, cause by:
全量或增量阶段失败报错,关键词“service *** failed, cause by: Unable to connect to DBMS: ***” 场景描述 全量或增量同步期间DRS任务报错,同步日志界面提示:service *** failed, cause by: Unable
全量或增量阶段失败报错, 关键词“The binlog fetch connection may be interrupted” 场景描述 全量或增量阶段,DRS迁移或同步任务报错,日志界面提示信息:The binlog fetch connection may be interrupted