---
格式版本: 2
标题: "Amazon RDS for SQL Server supports additional SQL trace flags"
原文链接: "https://aws.amazon.com/about-aws/whats-new/2026/09/rds-sqlserver-supports-additional-trace-flags/"
发布日期: "2026-09-02"
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发布时间原页读取状态: "source template page reused from URL open"
发布时间未找到原因: ""
发布时间校准时间: "2026-09-04T16:13:49+08:00"
发布时间仲裁状态: "confirmed"
发布时间仲裁尝试次数: 1
发布时间仲裁耗时毫秒: 100559
发现时间: "2026-09-04T16:09:10+08:00"
入库时间: "2026-09-04T08:15:31.907Z"
来源平台: "固定入口"
搜索渠道: "fixed_url"
搜索词: "https://aws.amazon.com/new"
匹配关键词:
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相关厂家:
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相关专家:
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内容类型: "网页"
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AI优质: "否"
AI打分: 30
AI分档: "非优质"
AI质检状态: "不通过"
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AI新颖性: 5
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采集批次: "2026年9月4日15点53分07秒"
采集批次ID: "20260904-155307-58ad1755"
去重键: "https://aws.amazon.com/about-aws/whats-new/2026/09/rds-sqlserver-supports-additional-trace-flags"
---

[Amazon RDS for SQL Server](https://aws.amazon.com/rds/sqlserver/) supports 18 additional SQL trace flags that you can enable through database parameter groups. Trace flags are configuration switches that modify SQL Server engine behavior — such as query optimizer cardinality estimation, lock escalation, statistics management, and memory handling — to allow database administrators to fine-tune performance and address workload-specific challenges. With this expansion, you have greater flexibility to optimize and stabilize your SQL Server workloads directly within your managed RDS environment.

The newly supported trace flags include: 647, 652, 1448, 3654, 4138, 4139, 7745, 8285, 8780, 9432, 9481, 9492, 9592, 11024, 11042, 12502, 12618, and 12656. These trace flags address scenarios such as query plan optimization, DDL performance improvements, availability group replication, Query Store behavior, automatic plan correction, and known engine bug mitigations. Because trace flags modify core SQL Server engine behavior, you should test them in a non-production environment before applying them to production instances. Some trace flags can impact system performance, increase memory usage, or change query execution plans in unexpected ways.

Trace flags are available in all AWS Regions where Amazon RDS for SQL Server is supported. To get started, update your RDS parameter group to enable the desired trace flags and apply it to your DB instance. To learn more, see [Amazon RDS for SQL Server User Guide](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_SQLServer.html).