SQL Server Archives

Winsage

January 15, 2026

Microsoft updates Windows DLL that triggered security alerts

Microsoft has resolved an issue where third-party security applications mistakenly flagged the WinSqlite3.dll component of the Windows operating system as vulnerable. This issue affected various systems, including Windows 10, Windows 11, and Windows Server 2012 through 2025. The flagged vulnerability was linked to a memory corruption issue (CVE-2025-6965). Microsoft released an update to the WinSqlite3.dll component in updates from June 2025 and later, advising users to install the latest updates for their devices. WinSqlite3.dll is a core component of Windows, distinct from sqlite3.dll, which is not part of the operating system. Microsoft had previously addressed other false positive issues affecting its Defender for Endpoint platform.

Winsage

January 14, 2026

U.S. CISA adds a flaw in Microsoft Windows to its Known Exploited Vulnerabilities catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a Microsoft Windows vulnerability, CVE-2026-20805, to its Known Exploited Vulnerabilities (KEV) catalog, with a CVSS score of 8.7. This vulnerability, part of the January 2026 Patch Tuesday updates, affects the Windows Desktop Window Manager and allows attackers to leak memory information, potentially aiding in further exploits. Federal Civilian Executive Branch agencies must address this vulnerability by February 3, 2026, as mandated by Binding Operational Directive 22-01.

Winsage

December 25, 2025

Native NVMe support in Windows Server 2025 promises dramatic speed gains

Microsoft has introduced native NVMe support in Windows Server 2025, enhancing the performance of modern NVMe devices, including PCIe Gen5 SSDs and high-end Host Bus Adapters (HBAs). This feature eliminates the translation layers that previously routed NVMe I/O through SCSI, resulting in reduced processing overhead and latency. Testing shows that Windows Server 2025 can achieve up to 80% higher 4K random read IOPS and approximately 45% fewer CPU cycles per I/O compared to Windows Server 2022. The enhancements benefit enterprise applications such as SQL Server, OLTP workloads, and virtualization environments using Hyper-V, as well as analytics and AI/ML workloads. To utilize native NVMe, system administrators must use the in-box Windows NVMe driver, and the feature requires an opt-in process with the latest cumulative update and registry key or Group Policy configuration. Organizations should validate the implementation to assess its impact on their production environments.

Tech Optimizer

December 12, 2025

Optimize and troubleshoot database performance in Amazon Aurora PostgreSQL by analyzing execution plans using CloudWatch Database Insights

Amazon Web Services (AWS) launched CloudWatch Database Insights in December 2024, a monitoring solution for Aurora (PostgreSQL and MySQL) and Amazon RDS engines, aimed at identifying and resolving database performance issues. The tool includes an Advanced mode for SQL execution plan analysis, which helps users troubleshoot query performance within Aurora PostgreSQL clusters. The PostgreSQL query optimizer generates execution plans to determine the most efficient way to execute SQL queries, which can be analyzed using the EXPLAIN command. Users can compare execution plans to identify performance degradation, such as changes in execution behavior due to dropped indexes or inefficient join strategies. For example, a comparison of execution plans for a SQL statement retrieving order details showed significant differences: one plan used an efficient index scan while another resorted to sequential scans due to missing indexes, leading to increased query costs and execution times. Additionally, analysis of execution plans can reveal performance bottlenecks, such as insufficient memory allocation for sorting operations. Adjusting the work_mem parameter allowed for in-memory sorting, improving performance significantly. CloudWatch Database Insights facilitates the identification of these issues, enabling users to optimize query performance effectively.

Tech Optimizer

December 2, 2025

AWS Transform announces full-stack Windows modernization capabilities

AWS launched AWS Transform for .NET in May, aimed at modernizing .NET applications. In response to user feedback, AWS introduced AWS Transform for full-stack Windows modernization, which streamlines modernization tasks across the Windows application stack. This service enhances modernization efficiency by up to five times and supports migration from .NET Framework to cross-platform .NET and SQL Server to Amazon Aurora PostgreSQL-Compatible Edition. It includes features for validating and testing applications, customizable deployment configurations, and modernizing ASP.NET Web Forms UI to Blazor. AWS Transform connects to source code repositories and database servers to analyze dependencies and create modernization waves. Users can configure database connectors for SQL Server and source code repositories, leading to a wave-based transformation plan. The service generates a SQL Modernization Assessment Report detailing the proposed modernization strategy. The transformation process involves converting SQL Server schema to PostgreSQL, migrating data, transforming .NET application code, and deploying applications for testing. AWS Transform exclusively supports codebases in .NET 6 or later. It also facilitates UI modernization from ASP.NET Web Forms to Blazor, managing the conversion of various project files. Additional features include support for porting to .NET 10 and .NET Standard, an editable transformation report, real-time tracking of transformation progress, and a markdown file outlining remaining tasks post-transformation. AWS Transform for full-stack Windows modernization is available in the US East (N. Virginia) Region, with no additional charges for the features beyond standard resource usage. It supports SQL Server versions from 2008 R2 to 2022 and Entity Framework versions 6.3 to 8.0.

Tech Optimizer

November 20, 2025

Microsoft launches distributed PostgreSQL to rival AWS

Microsoft has launched a new distributed PostgreSQL database service called Azure HorizonDB, which is fully compatible with open source PostgreSQL and designed to enhance performance, scalability, and availability. The service supports autoscaling storage up to 128 TB and compute capabilities of up to 3,072 vCores, with a multi-zone commit latency of less than one millisecond. It features advanced AI capabilities, including DiskANN vector indexes and AI model management, but does not currently offer a serverless model. The launch coincides with a rise in PostgreSQL adoption, with 58 percent of professional developers using it. Competitors in the distributed PostgreSQL market include CockroachDB, YugabyteDB, and Google and AWS's offerings. Microsoft has also introduced two PostgreSQL extensions aimed at enhancing its database services.

Tech Optimizer

November 19, 2025

Microsoft updates database portfolio and adds open-source offerings

Microsoft has announced updates to its database offerings, including the general availability of Azure DocumentDB and SQL Server 2025, and a private preview of Azure HorizonDB. Azure DocumentDB is a managed service based on the open-source DocumentDB project, compatible with MongoDB, featuring vector and hybrid search, autoscaling, and enhanced security. SQL Server 2025 introduces AI capabilities, native JSON support, and improved query optimization. Azure HorizonDB, currently in private preview, is a cloud database service based on PostgreSQL, designed for enterprise applications, supporting transactions and vector search, and integrating with Microsoft’s development platforms. Additionally, Microsoft Fabric databases, which combine SQL and Azure Cosmos DB functionalities, are now available.

Winsage

November 12, 2025

Microsoft Releases November 2025 Patch Tuesday Updates

Microsoft has rolled out its November 2025 Patch Tuesday updates for Windows 11, addressing 63 vulnerabilities across various platforms, including Windows, Office, Microsoft Edge, Azure Monitor Agent, Dynamics 365, Hyper-V, and SQL Server. The update includes four critical and 59 important vulnerabilities, with one currently being exploited. Key vulnerabilities fixed include: - CVE-2025-62215: A privilege escalation vulnerability in the Windows Kernel. - CVE-2025-60724: A critical heap-based buffer overflow in the Microsoft Graphics Component (GDI+) enabling remote code execution, rated CVSS 9.8. - CVE-2025-60704: A high-severity vulnerability in Windows Kerberos, rated CVSS 7.5. - CVE-2025-62220: A heap-based buffer overflow in the Windows Subsystem for Linux GUI (WSLg), rated CVSS 8.8. - CVE-2025-60719: An untrusted pointer dereference in the Windows Ancillary Function Driver for WinSock. The update enhances features for Windows 11 versions 25H2 and 24H2, improving Click to Do, File Explorer, Voice Access, and Windows Search for Copilot+ devices. The taskbar has been updated with a new battery icon, and the Start Menu has been redesigned to include a scrollable All section. A preview of the Administrator Protection feature has been introduced to prevent unauthorized changes. Additionally, Microsoft released KB5068781 for Windows 10 Extended Security Updates, fixing an incorrect “end of support” message and addressing the same 63 vulnerabilities. Organizations are advised to conduct thorough testing before deploying the patches and to back up systems to mitigate potential issues.

Winsage

November 12, 2025

Microsoft November 2025 Patch Tuesday fixes 1 zero-day, 63 flaws

Microsoft's November 2025 Patch Tuesday addresses a total of 63 vulnerabilities, including one actively exploited zero-day flaw (CVE-2025-62215) related to Windows Kernel Elevation of Privilege. The updates include four vulnerabilities classified as "Critical," with two for remote code execution, one for elevation of privileges, and one for information disclosure. The breakdown of vulnerabilities is as follows: - 29 Elevation of Privilege Vulnerabilities - 2 Security Feature Bypass Vulnerabilities - 16 Remote Code Execution Vulnerabilities - 11 Information Disclosure Vulnerabilities - 3 Denial of Service Vulnerabilities - 2 Spoofing Vulnerabilities This Patch Tuesday marks the first extended security update (ESU) for Windows 10, and users are encouraged to upgrade to Windows 11 or enroll in the ESU program. Microsoft has also released an out-of-band update to assist with enrollment issues. Other companies, including Adobe, Cisco, and Google, have also issued security updates in November 2025.

Tech Optimizer

October 28, 2025

Optimize and troubleshoot database performance in Amazon Aurora PostgreSQL by analyzing execution plans using CloudWatch Database Insights

Amazon Web Services (AWS) offers monitoring tools for Amazon Relational Database Service (RDS) and Amazon Aurora databases, including Amazon CloudWatch Database Insights, which helps analyze SQL execution plans for troubleshooting and optimizing SQL query performance in Aurora PostgreSQL clusters. The PostgreSQL query optimizer generates multiple execution strategies for SQL queries and selects the most efficient based on cost estimation. A query access plan details the execution strategy, which can be analyzed using the EXPLAIN command. In December 2024, AWS launched CloudWatch Database Insights, supporting Aurora and RDS engines, aimed at helping DevOps engineers, developers, and DBAs identify and resolve database performance issues. The tool has Advanced and Standard modes, with SQL execution plan analysis available in Advanced mode. To analyze SQL execution plans, users can access CloudWatch Database Insights, review performance metrics, and compare execution plans side-by-side. For example, one execution plan may use a sequential scan while another uses an index scan, revealing differences in query performance. When troubleshooting performance degradation, DBAs can compare execution plans over time to identify changes affecting performance. For instance, dropping indexes can lead to suboptimal execution plans and increased query costs. Analyzing execution plans can uncover inefficiencies, such as missing indexes or outdated statistics. For example, a query summarizing customer spending revealed that the work_mem parameter was set too low, causing disk-based sorting instead of in-memory sorting, which degraded performance. Increasing the work_mem parameter improved query execution efficiency. CloudWatch Database Insights simplifies the process of identifying performance bottlenecks and optimizing query performance through visualizations and execution plan comparisons.