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Some of the world’s most critical databases run in places where cloud connectivity cannot be assumed. A remote industrial site, for example, may need production systems to continue operating when ...
文章浏览阅读156次。SQL性能优化不能仅看执行时间,而应关注逻辑读、扫描行数、算子执行次数等核心指标。高逻辑读、低数据访问效率(如返回100行却扫描百万行)表明查询设计低效,即使当前执行快,也易在数据量或并发增加时恶化。应结合实际执行计划,分析Estimated Rows与Actual Rows差异、Rows× ...
MES task ingest Host. One surface, one contract: Oracle MES_TASK_UNION → causal round / PollTrace → the dedicated SQL Server projection → the frozen, read-only /api/v2/* contract. The Host owns one ...
Bounded history cleanup The Host owns one cleanup loop; SQL Server Agent and Windows Task Scheduler do not delete MesIngest business history. Checks use Host TimeProvider on fixed hourly boundaries ...
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