Technical Documentation
Vertica Database Technical Articles
Vertica Partition Table Design and Partition Pruning in Practice
11/8/2026
Benchmark Vertica partitioned table design with PARTITION BY and GROUP BY, partition pruning, v_monitor.partitions, DROP PARTITION versus DELETE, and how AHM and purge affect the data lifecycle.
Vertica Projection Design in Practice: Segmentation, Sort Order, Encoding, and ROS Pushback
11/7/2026
From segmentation and sort order to encoding and projection count, benchmark how Vertica projection design affects EXPLAIN plans, data skew, and ROS pushback, with a practical design checklist.
Vertica Statistics Management: Why the Optimizer Chooses the Wrong Plan
11/6/2026
Explain why the Vertica optimizer chooses the wrong plan when statistics are stale, benchmark EXPLAIN before and after ANALYZE_STATISTICS, compare row estimates and join order, and build a practical statistics maintenance strategy.
Vertica 25.4 VectorOps in Practice: Vector Similarity Search with ARRAY
11/5/2026
Store embeddings as ARRAY[FLOAT] in Vertica 25.4, benchmark COSINE_SIMILARITY, DOT_PRODUCT, VECTOR_L2, and VECTOR_MAGNITUDE, and build a Top-K vector similarity search while understanding the performance trade-offs without a vector index.
Auditing Vertica Disk Space: Don't Count ROS Containers, Count Bytes (25.4 Measured)
11/4/2026
Measured on Vertica 25.4: 1,254 of 1,524 ROS containers hold just 0.03 GB. Four audit queries, empty-table detection, and a reclaim-action table.
Vertica Resource Pool Best Practices — From Custom Pools to Cascading (25.x)
6/21/2026
Vertica resource pool management — five core parameters, workload classification, fastAnalytics evolution, and a tuning checklist.
Vertica Tuple Mover Best Practices — Mergeout, STRATA & TM Pool Tuning (25.x)
6/21/2026
Vertica Tuple Mover best practices — Mergeout mechanics, STRATA algorithm, TM pool tuning, ROS pushback, changes through 25.x.
Best Practices for Deleting Data in Vertica — DELETE, TRUNCATE, Partition Guide (25.x)
6/21/2026
Deleting data in Vertica — how DELETE works, five methods compared, delete vectors, PurgeMergeoutPercent, and DELETE alternatives.
Vertica Database Fails to Start After Crash — ASR Invalid Date Recovery Guide
6/21/2026
Vertica won't start after a crash with ASR showing invalid dates? Unsafe Mode, epoch analysis, abortrecovery, and data salvage.
Understanding Linux OOM Kills in Vertica Clusters — Prevention Guide
6/21/2026
Linux OOM killer in Vertica clusters — MAXMEMORYSIZE, catalog memory sizing, MemoryReport.log, glibc versions, ROS and delete vectors.
Vertica v26.2 NUMA-Aware Performance — 3x Throughput on a Single Server
6/21/2026
Vertica v26.2 NUMA-aware architecture — principles, stress test results (3.19x throughput on one server), and deployment savings.
Vertica Log Analysis for Root Cause Investigation — A Practical Guide
6/21/2026
Vertica log analysis workflow — Data Collector retention, monitoring query tuning, QUERY_EVENTS comparison, vertica.log severity analysis.
Vertica ML for Self-Monitoring and Smart Tuning (25.4 Verified)
6/21/2026
Using Vertica 25.4.0-0 built-in ML functions (LINEAR_REG, KMEANS, IFOREST, RF_CLASSIFIER) for self-monitoring and auto-tuning.
Vertica Performance Slow? — 13-Step Diagnostic Checklist (25.x Updated)
6/20/2026
A 13-step diagnostic checklist for Vertica slowdowns — updated to 25.x with the correct system table locations for each step.
Vertica + Apache Iceberg: Building a High-Performance Data Lakehouse
6/20/2026
Vertica + Apache Iceberg integration — architecture, feature matrix 12.0.4→25.4.0, and five hands-on examples (Glue, Lakekeeper, Nessie).
Vertica Health Watchdog Deep Dive — Automatic Cluster Monitoring (24.4+)
6/20/2026
Vertica Health Watchdog (24.4+) explained — four monitoring modules, threshold tuning, and 24 FAQ answers for early warning.
Vertica Smart Scanning — Faster External Table Queries with ObjectStoreGlobStrategy
6/20/2026
How Vertica 23.4+ ObjectStoreGlobStrategy speeds up external table queries by 88.5% — Flat vs Hierarchical scanning, benchmarked.
Vertica Cluster Rebalancing Field Guide (25.x)
6/20/2026
Rebalancing a Vertica cluster after adding or removing nodes — four-phase process, REFRESH pool tuning, locks, batch strategies.
Vertica Node Down Recovery Field Guide — Practical Guide (25.x)
6/20/2026
Recovering a failed Vertica node — state transitions, two-phase recovery, RECOVERY pool tuning, dirty transactions, 5 scenarios.
Vertica Data Load Best Practices — COPY Command Deep Dive (25.x)
6/20/2026
Vertica 25.x COPY architecture, resource pool and parameter tuning, plus 8 real-world loading bottlenecks — verified on 25.4.0-0.