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Zero Downtime Monitoring in OEM 24ai: Patching Your OMS Without Going Blind

EM 24ai's Zero Downtime Monitoring keeps alerts and notifications live during OMS patching. Here's how it works and what your topology needs to get it.

8 min readrajeshravi.com

Rakesh KishoreJul 2

UNION vs. UNION ALL: How Hidden Sort Operators Slow Down Your Combined Datasets

Unmasking the duplicate check penalty: Why combining queries can trigger unexpected disk grinding, how to trace performance plan warnings, and when to drop the distinct filter safely.

7 min readtunedinstance.com

Rakesh KishoreJun 21

SQL Server Linked Servers: How to Fix Slow Cross-Server Queries and Stop Performance Lag

Unclogging the cross-server pipeline: Why linking databases makes queries run slow, how to stop SQL Server from pulling millions of rows over the network, and how to write fast remote queries.

6 min readtunedinstance.com

Rakesh KishoreJun 16

Navigating Memory Architecture: Buffer Pool Tracking, Clerks, and Plan Cache Eviction

Cracking the code on RAM allocations: How to audit Page Life Expectancy, diagnose buffer pool pressure, and eliminate plan cache bloat.

8 min readtunedinstance.com

Rakesh KishoreJun 15

Scaling Large Datasets: Table Partitioning Architecture and Sliding Window Purges

Architecting VLDB storage layers: How to configure symmetrical index alignment, engineer partition functions, and execute instantaneous metadata-only data purges.

8 min readtunedinstance.com

Rakesh KishoreJun 15

Optimizing Transaction Log Architecture: Mitigating Runaway LDF Files and VLF Fragmentation

Unpacking .ldf storage engineering: How to audit Virtual Log Files, isolate log truncation roadblocks, and handle emergency disk saturation safely.

10 min readtunedinstance.com

Rakesh KishoreJun 15

Designing High-Performance Indexes: Composite Keys, Included Columns, and Mitigating Key Lookups

Mastering B-Tree physical alignment: How to engineer optimal column ordering, eliminate costly Key Lookup operators, and balance read optimization against DML write overhead.

7 min readtunedinstance.com

Rakesh KishoreJun 14

Query Store Architecture: The Flight Data Recorder for SQL Server

Unlocking the database black box: How to automatically track historical execution plans, analyze runtime wait states, and mitigate performance regressions asynchronously.

6 min readtunedinstance.com

Rakesh KishoreJun 14

Maintaining Engine Health: Triage Index Fragmentation and Outdated Statistics

Optimizing physical and logical data access paths: A deep dive into tracking page splits, auditing modification counters, and updating stale distribution histograms for peak engine efficiency.

7 min readtunedinstance.com

Rakesh KishoreJun 14

Catching the Slowdowns: Capturing Workloads with Extended Events

Moving past legacy Profiler overhead: How to implement lightweight asynchronous event sessions, leverage server predicates, and safely capture production workloads without thread saturation.

6 min readtunedinstance.com

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Zero Downtime Monitoring in OEM 24ai: Patching Your OMS Without Going Blind

UNION vs. UNION ALL: How Hidden Sort Operators Slow Down Your Combined Datasets

SQL Server Linked Servers: How to Fix Slow Cross-Server Queries and Stop Performance Lag

Navigating Memory Architecture: Buffer Pool Tracking, Clerks, and Plan Cache Eviction

Scaling Large Datasets: Table Partitioning Architecture and Sliding Window Purges

Optimizing Transaction Log Architecture: Mitigating Runaway LDF Files and VLF Fragmentation

Designing High-Performance Indexes: Composite Keys, Included Columns, and Mitigating Key Lookups

Query Store Architecture: The Flight Data Recorder for SQL Server

Maintaining Engine Health: Triage Index Fragmentation and Outdated Statistics

Catching the Slowdowns: Capturing Workloads with Extended Events