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SQL Server DBA

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Patch: SQL Server 2025 CU11 (build 17.0.5065.9)

November 1, 2026
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SQL Server 2025 CU11 is out: build 17.0.5065.9.

Cumulative update for SQL Server 2025, build 17.0.5065.9, released November 2026.

Download and release notes (Microsoft KB)

All current updates: SQL Server Patches.

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SQL Server DBA Handbook

Setup, backup and high availability (37)
  • Backing Up and Restoring a Database
  • Restoring a Full Database Backup (SSMS)
  • Restoring a Database to a New Location
  • Backup and Restore with T-SQL
  • Disaster Recovery Planning
  • Basic vs Advanced High Availability
  • Adding a Database to an Availability Group
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  • Availability Group Health Troubleshooting
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  • Moving TempDB
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  • Server Build Checklist
  • Encryption
  • TDE: Backing Up the Certificate
  • Data Obfuscation and Masking
  • SQL Server Audit
  • FILESTREAM
  • Orphaned SQL Logins
  • Replicating SQL Server Logins with Their SIDs
  • Login Failures (Error 18456)
  • Random Password Generator
  • Generating the SPNs (Kerberos)
  • SQL Server Replication: Setup, Types and Pitfalls
  • Adding an Article to a Publication
  • Enabling Change Tracking: Good and Bad Points
  • Migrating a Reporting Services Installation (Native Mode)
  • Upgrading SSRS 2005 to 2012 (Quick and Dirty)
  • Azure SQL Options
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  • Building an Availability Group
  • Failover Cluster Instances and Distributed Availability Groups
  • Backup to URL and Backup Encryption
  • PowerShell and dbatools
  • SQL Server Trace Flags
Performance (16)
  • Database Performance Tuning and Index Strategy
  • Data Compression
  • Forwarded Records
  • NUMA
  • Common Memory Issues
  • Average Write Performance
  • Stress Testing the I/O Subsystem with SQLIO
  • When the SQL Server Cache Needs to Be Cleared
  • Parameter Sniffing
  • Table Partitioning
  • Resource Governor
  • What Happens During a Data Change: Buffer Pool, Write-Ahead Log and Durability
  • Measuring Query Performance and Taking a Baseline
  • Reading Execution Plans
  • Plan Caching and Parameterization
  • Statistics Problem or Caching Problem?
Troubleshooting (21)
  • Database Suspect, Recovery Pending or Stuck Recovering
  • Shrinking Databases
  • Transaction Log Full
  • Data File Full and Disk Space (Error 1105)
  • Shrinking Transaction Logs
  • Stopping a Running Job in Job Activity Monitor
  • Failed SQL Agent Job Triage
  • Single-User Mode
  • Tempdb Full or Contention
  • Repairing the WMI Provider (mofcomp)
  • SQL Server Referencing the Wrong Disk Drives
  • Performance Troubleshooting Queries
  • High CPU Troubleshooting
  • SQL Locks
  • SQL Server Error Numbers
  • Monitoring Deadlocks
  • Sleeping Processes
  • DMVs and Session Monitoring
  • Collecting Data with Performance Monitor
  • Collecting a Trace with SQL Profiler
  • Schema Locks and Online Index Maintenance
T-SQL (17)
  • SQL Best Practices
  • T-SQL Coding Conventions and Programming Guidelines
  • Common Table Expressions (CTEs)
  • CROSS APPLY and OUTER APPLY
  • Exporting Data to a File
  • SET IDENTITY_INSERT
  • OPENQUERY with Linked Servers
  • Service Broker in SQL Server
  • Enabling and Resetting Service Broker
  • Change Data Capture (CDC)
  • Extended Events
  • Temporal Tables
  • DDL and DML Audit Triggers
  • Transaction Modes: Autocommit, Explicit and Implicit
  • Error Handling in Transactions: TRY/CATCH, @@TRANCOUNT and XACT_STATE()
  • Read Consistency: Read Committed, RCSI and Snapshot Isolation
  • T-SQL Performance Anti-Patterns

Question of the Day

Setup, backup and high availability (1)
  • Fixed Server Roles in SQL Server
Performance (1)
  • Disabled Indexes in SQL Server
T-SQL (12)
  • The SQL Server bit Data Type
  • ALTER SCHEMA TRANSFER
  • The T-SQL SQUARE Function
  • Using a Column Alias in ORDER BY
  • The T-SQL SIGN Function
  • T-SQL Reserved Keywords
  • Adding a Column with a DEFAULT
  • Trailing Spaces in SQL Server
  • SQL Server Regex Functions
  • Aggregates on Empty Sets in T-SQL
  • The SQL Server Vector Data Type
  • The T-SQL CHOOSE Function

All Question of the Day posts (14)

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