- SQL Server lock escalation blocking the whole table: find the statement that escalated and fix itDatabases · 12 Nov 2026
- Databricks materialized view does a full recompute on every refresh - reading planning_information and making it incrementalDatabricks on Azure · 11 Nov 2026
- OCI instance network throughput below the shape's bandwidth: testing with iperf3, SR-IOV vs paravirtualized and multi-flow tuningOCI · 11 Nov 2026
- Oracle Real-Time SQL Monitoring cheat sheet: V$SQL_MONITOR, plan-line actuals, reports and historyDatabases · 11 Nov 2026
- PostgreSQL JIT compilation making short queries slow: measure the overhead and tune it per workloadDatabases · 11 Nov 2026
- Right-sizing Azure Databricks clusters with system.compute.node_timeline: SQL for CPU, memory, swap, disk and idle workersDatabricks on Azure · 11 Nov 2026
- Spark on Kubernetes production checklist: memory overhead, local storage, dynamic allocation and executor decommissioningData Platform · 11 Nov 2026
- Spark Structured Streaming RocksDB state store: slow commits, executor memory blowups and checkpoint storage growthData Platform · 11 Nov 2026
- SQL Server ADR persistent version store keeps growing: find what blocks cleanup and get the space backDatabases · 11 Nov 2026
- Surrogate keys on Delta at scale: identity columns, their concurrency limits and hash-key alternatives on Azure DatabricksDatabricks on Azure · 11 Nov 2026
- vLLM cheat sheet: vllm serve flags, OpenAI-compatible endpoints, health checks, metrics and benchmarksAI & GenAI · 11 Nov 2026
- Apache Iceberg with concurrent writers - a production checklist for catalogs, commit conflicts, isolation and metadata growthData Platform · 9 Nov 2026
- dbt microbatch incremental models in production - event_time filtering, lookback, backfills and failed batchesData Platform · 9 Nov 2026
- Delta queries slow before the first task starts: transaction log bloat, checkpoints and file counts on Azure DatabricksDatabricks on Azure · 9 Nov 2026
- Kinesis Data Streams consumers falling behind: iterator age, ReadProvisionedThroughputExceeded and Lambda event source mapping tuningAWS · 9 Nov 2026
- Oracle ASH cheat sheet: Active Session History queries for top SQL, waits, blockers, PGA and TEMPDatabases · 9 Nov 2026
- Spark EXPLAIN cheat sheet - reading physical plans, exchanges, join strategies, pushdown and AQE final plansData Platform · 9 Nov 2026
- SQL Server 2025 operational enhancements: what DBAs should enable, test and watchDatabases · 9 Nov 2026
- SQL Server In-Memory OLTP readiness checklist: memory sizing, durability, hash buckets, retries and operationsDatabases · 9 Nov 2026
- SQL Server Resource Governor in production: pools, workload groups, a safe classifier and tempdb limitsDatabases · 9 Nov 2026
- Delta query still scans every file: fix data skipping, the first-32-columns stats limit and filter expressionsDatabricks on Azure · 7 Nov 2026
- Oracle table still slow and huge after a mass DELETE: find the high water mark and reclaim spaceDatabases · 7 Nov 2026
- PostgreSQL query is fast in psql but slow from the app: generic plans and plan_cache_modeDatabases · 7 Nov 2026
- Spark join returned far more rows than expected: find and fix many-to-many key explosionsData Platform · 7 Nov 2026
- Delta small files from streaming tables: optimized writes, auto compaction and safe OPTIMIZEDatabricks on Azure · 6 Nov 2026
- Kafka producer TimeoutException: expiring records - find whether it's the client, network or brokerData Platform · 6 Nov 2026
- MySQL history list length keeps growing: find the old transaction and clear InnoDB purge lagDatabases · 6 Nov 2026
- PostgreSQL HOT updates and fillfactor: reduce bloat and WAL on update-heavy tablesDatabases · 6 Nov 2026
- SQL Server PAGELATCH_EX on inserts: fix last-page contention with OPTIMIZE_FOR_SEQUENTIAL_KEYDatabases · 6 Nov 2026
- SQL Server Query Store switched to READ_ONLY: find the reason and restart captureDatabases · 6 Nov 2026
- Databricks query history cheat sheet: SQL for slow queries, queueing, scans and failuresDatabricks on Azure · 5 Nov 2026
- Oracle ORA-01000 maximum open cursors exceeded: find the leak and fix itDatabases · 5 Nov 2026
- PostgreSQL CREATE INDEX CONCURRENTLY failed or stuck: INVALID indexes, _ccnew leftovers and a safe retryDatabases · 4 Nov 2026
- Redis replica stuck in a full resync loop: output buffer limits, backlog size and repl-timeoutDatabases · 4 Nov 2026
- Stop a runaway Snowflake query: cancel by query ID, session, user or warehouse, then set timeoutsData Platform · 4 Nov 2026
- EBS volume restored from a snapshot is slow: lazy loading, Fast Snapshot Restore and pre-warmingAWS · 3 Nov 2026
- Kafka compacted topic keeps growing: log cleaner stopped, active segments and tombstones that never go awayData Platform · 3 Nov 2026
- Oracle ORA-00060 deadlock detected: read the trace file and fix the real causeDatabases · 3 Nov 2026
- PostgreSQL replica: 'canceling statement due to conflict with recovery' - causes, settings and trade-offsDatabases · 3 Nov 2026
- Spark broadcast join failures: 'Could not execute broadcast in 300 secs', driver OOM and the 8 GB limitData Platform · 3 Nov 2026
- SQL Server CDC: capture job lag and a transaction log that won't truncate (log_reuse_wait = REPLICATION)Databases · 3 Nov 2026
- Triton Inference Server dynamic batching: tune queue delay, batch sizes and instances with metrics, not guessesAI & GenAI · 3 Nov 2026
- Introduction to MySQL performance_schema and the sys schema: find top queries, waits and unused indexesDatabases · 2 Nov 2026
- Introduction to Spark shuffle partitions: what spark.sql.shuffle.partitions does and how AQE sizes them for youData Platform · 2 Nov 2026
- Introduction to SQL Server Extended Events: replace Profiler traces with lightweight sessions you can leave runningDatabases · 2 Nov 2026
- Oracle optimizer statistics cheat sheet: DBMS_STATS gather, stale checks, locks, preferences and restoreDatabases · 2 Nov 2026
- Oracle ORA-01652 unable to extend temp segment: find the session eating TEMP, fix the query, and size the tablespace properlyDatabases · 2 Nov 2026
- SQL Server too many VLFs: slow startup, slow restores and lagging AG redo, and how to rebuild the logDatabases · 2 Nov 2026
- Load testing an LLM endpoint before go-live: TTFT, tokens per second, concurrency and where 429s startAI & GenAI · 31 Oct 2026
- Sev1: Azure Cache for Redis timeouts take the app down — server load, memory pressure and client fixesAzure · 31 Oct 2026
- Sev1: Delta MERGE runs for hours and the daily SLA is missed — pruning, file layout and quick winsDatabricks on Azure · 31 Oct 2026
- Sev1: Spark job stuck at 199/200 tasks for hours — finding and fixing data skewData Platform · 31 Oct 2026
- Sev1: SQL Server queries stuck waiting for memory — RESOURCE_SEMAPHORE and runaway memory grantsDatabases · 31 Oct 2026
- SQL Server at 100% CPU: find the query, the cause and the fixDatabases · 31 Oct 2026
- Oracle SQL Plan Management in practice: capture, load, fix and evolve SQL plan baselinesDatabases · 29 Oct 2026
- PostgreSQL index basics: B-tree indexes, reading EXPLAIN, and why your index is not being usedDatabases · 29 Oct 2026
- PostgreSQL planner misestimates: statistics targets, extended statistics and correlated columnsDatabases · 29 Oct 2026
- Redis Cluster operations: hash slots, resharding, rebalancing and finding hot or big keysDatabases · 29 Oct 2026
- Snowflake query tuning in depth: Query Profile, partition pruning, clustering keys and search optimizationData Platform · 29 Oct 2026
- Spark data skew in depth: diagnose skewed joins and aggregations, then fix with AQE, broadcast or saltingData Platform · 29 Oct 2026
- SQL Server parameter sniffing in depth: diagnose it, then choose between PSP optimization, hints and Query StoreDatabases · 29 Oct 2026
- vLLM memory tuning in depth: KV cache sizing, max-model-len, max-num-seqs and preemptionAI & GenAI · 29 Oct 2026
- AKS intermittent DNS timeouts: 5-second delays, CoreDNS overload, conntrack races and the ndots trapAzure · 28 Oct 2026
- Autonomous Database queries waiting on resmgr:cpu quantum: services, consumer groups and concurrency limitsOCI · 28 Oct 2026
- Azure Data Factory self-hosted IR saturated: copy activities queueing, high CPU and memory, concurrent jobs limits and scale-outData Platform · 28 Oct 2026
- Azure Key Vault throttling (429 Too Many Requests) at scale: find the noisy caller and stop reading secrets on every requestAzure · 28 Oct 2026
- Azure Storage 503 ServerBusy and timeouts under load: account limits, hot partitions and naming that scalesAzure · 28 Oct 2026
- DynamoDB TransactionCanceledException and TransactionConflict: reading cancellation reasons and designing around contentionAWS · 28 Oct 2026
- EC2 packet drops with no obvious cause: ENA bandwidth, PPS, conntrack and link-local allowance exceededAWS · 28 Oct 2026
- FetchFailedException and ExecutorLostFailure in Azure Databricks: lost shuffle files from OOM, spot evictions and decommissioningDatabricks on Azure · 28 Oct 2026
- foreachBatch MERGE in Azure Databricks: duplicates after restarts, 'multiple source rows matched' and merges that get slower every dayDatabricks on Azure · 28 Oct 2026
- Kafka consumer rebalance storms: max.poll.interval.ms, cooperative rebalancing, static membership and the new consumer protocolData Platform · 28 Oct 2026
- Milvus \"collection not loaded\" errors and query node memory: load, release, replicas and mmapAI & GenAI · 28 Oct 2026
- Milvus deletes don't free space and searches slow down: segments, delete logs, compaction and garbage collectionAI & GenAI · 28 Oct 2026
- MongoDB sharded cluster out of balance: jumbo chunks, a hot shard and a balancer that won't move dataDatabases · 28 Oct 2026
- MySQL 'Waiting for table metadata lock': one ALTER TABLE freezes the whole application - find the blocker and run DDL safelyDatabases · 28 Oct 2026
- Oracle library cache: mutex X and cursor: pin S wait on X - high version counts, hard parsing and hot objectsDatabases · 28 Oct 2026
- pgvector HNSW index build takes hours: maintenance_work_mem, parallel workers and building without blocking writesAI & GenAI · 28 Oct 2026
- pgvector query ignores the HNSW index: sequential scans caused by operator mismatches, ORDER BY expressions and parameter typesAI & GenAI · 28 Oct 2026
- Pinecone upserts fail with 429 Too Many Requests or crawl along: batch sizing, parallel upserts, retries and bulk importAI & GenAI · 28 Oct 2026
- PostgreSQL slows to a crawl with LWLock SubtransSLRU waits: too many subtransactions, savepoints and EXCEPTION blocksDatabases · 28 Oct 2026
- Qdrant filtered searches are slow: payload indexes, tenant indexes and making filters part of the HNSW graphAI & GenAI · 28 Oct 2026
- S3 503 SlowDown at high request rates: prefix scaling, KMS request quotas and clients that make it worseAWS · 28 Oct 2026
- Spark JDBC read is slow or runs in one task: partitionColumn, bounds, predicates and fetchsizeData Platform · 28 Oct 2026
- Spark Structured Streaming state keeps growing: watermarks that don't work, unbounded dropDuplicates and stream-stream joinsData Platform · 28 Oct 2026
- SQL Server Availability Group secondary falling behind: log send queue vs redo queue, blocked redo and parallel redo bottlenecksDatabases · 28 Oct 2026
- SQL Server THREADPOOL waits: worker thread exhaustion, logins that hang and how to get in with the DACDatabases · 28 Oct 2026
- The database is slow: a step-by-step performance triage runbook for MySQL and PostgreSQLDatabases · 28 Oct 2026
- Oracle ORA-01555 snapshot too old: finding the long query, sizing undo and stopping it coming backDatabases · 27 Oct 2026
- Databricks \"driver is temporarily unavailable\" or \"not responding\" - fixing driver overload, GC pauses and collect()Databricks on Azure · 26 Oct 2026
- MySQL InnoDB deadlocks - reading SHOW ENGINE INNODB STATUS, logging every deadlock and fixing the access patternDatabases · 26 Oct 2026
- Ollama is slow or running on CPU instead of GPU: model placement, context size and reloadsAI & GenAI · 26 Oct 2026
- Oracle blocking sessions and \"enq: TX - row lock contention\" - finding the blocker, the SQL and the objectDatabases · 26 Oct 2026
- Redis latency spikes: finding the cause with SLOWLOG, LATENCY DOCTOR and INFODatabases · 26 Oct 2026
- Advisory: MongoDB schema design - embed or reference, and the patterns that keep documents fastDatabases · 25 Oct 2026
- Advisory: Redis caching patterns - cache-aside, write-through, TTLs, invalidation and stampede protectionDatabases · 25 Oct 2026
- Advisory: storage design for SQL Server on Azure VMs - disks, caching, tempdb and throughput limitsDatabases · 25 Oct 2026
- Optimization: Airflow performance - DAG parsing, concurrency settings, pools and deferrable operatorsData Platform · 25 Oct 2026
- Optimization: App Service plan consolidation, density and autoscale that follows real loadAzure · 25 Oct 2026
- Optimization: Azure Front Door caching, compression and origin offloadAzure · 25 Oct 2026
- Optimization: Azure Functions cold starts, plan choice and the Flex Consumption planAzure · 25 Oct 2026
- Optimization: Azure VM performance tuning - size families, accelerated networking, caching and placementAzure · 25 Oct 2026
- Optimization: choosing Azure VM families for Databricks clusters - memory, compute, storage-optimized and local SSDDatabricks on Azure · 25 Oct 2026
- Optimization: Databricks instance pools on Azure - faster cluster starts without paying for idle VMsDatabricks on Azure · 25 Oct 2026
- Optimization: disk cache vs Spark cache on Azure Databricks - which to use, and when caching hurtsDatabricks on Azure · 25 Oct 2026
- Optimization: DynamoDB cost - capacity mode, table class, TTL and index designAWS · 25 Oct 2026
- Optimization: end-to-end latency for LLM applications - where the seconds go and how to win them backAI & GenAI · 25 Oct 2026
- Optimization: faster dashboards on Databricks SQL with materialized views, streaming tables and result cachingDatabricks on Azure · 25 Oct 2026
- Optimization: faster Delta MERGE on Azure Databricks - pruning, deletion vectors and source deduplicationDatabricks on Azure · 25 Oct 2026
- Optimization: faster Power BI semantic models - star schema, VertiPaq size and DAXData Platform · 25 Oct 2026
- Optimization: faster SQL Server backups and restores - compression, striping, buffer settings and backup to URLDatabases · 25 Oct 2026
- Optimization: improving CloudFront cache hit ratio with cache policies, Origin Shield and compressionAWS · 25 Oct 2026
- Optimization: Kafka Connect throughput - tasks, batching, converters and dead-letter queuesData Platform · 25 Oct 2026
- Optimization: Kafka producer and consumer tuning for throughput and latencyData Platform · 25 Oct 2026
- Optimization: Lambda performance and cost - memory power tuning, arm64, SnapStart and provisioned concurrencyAWS · 25 Oct 2026
- Optimization: OCI Block Volume performance levels (VPUs) and auto-tuneOCI · 25 Oct 2026
- Optimization: OCI Functions cold starts, memory sizing and provisioned concurrencyOCI · 25 Oct 2026
- Optimization: PostgreSQL declarative partitioning for large tables - pruning, fast purges and easier vacuumDatabases · 25 Oct 2026
- Optimization: PostgreSQL memory settings - shared_buffers, work_mem, maintenance_work_mem and effective_cache_sizeDatabases · 25 Oct 2026
- Optimization: PostgreSQL query and index tuning with pg_stat_statements - top queries, unused and duplicate indexesDatabases · 25 Oct 2026
- Optimization: replacing slow Python UDFs on Databricks - built-in functions, pandas UDFs and ArrowDatabricks on Azure · 25 Oct 2026
- Optimization: right-sizing Azure managed disks with performance tiers and Premium SSD v2Azure · 25 Oct 2026
- Optimization: right-sizing OCI load balancers - flexible bandwidth, Network Load Balancer and consolidationOCI · 25 Oct 2026
- Optimization: Snowflake warehouse design - sizing, auto-suspend, multi-cluster and query accelerationData Platform · 25 Oct 2026
- Optimization: SQL Server index review - missing, unused and duplicate indexes from DMVs and Query StoreDatabases · 25 Oct 2026
- Optimization: tuning Auto Loader on Azure - file notification vs listing, batch sizes and schema inference costDatabricks on Azure · 25 Oct 2026
- Optimization: tuning Azure SQL Database workloads with Query Store and automatic tuningAzure · 25 Oct 2026
- Optimization: tuning Databricks autoscaling on Azure - min/max workers, scale-down and when to use fixed sizeDatabricks on Azure · 25 Oct 2026
- Optimization: tuning EC2 Auto Scaling - target tracking, predictive scaling, warm pools and mixed instancesAWS · 25 Oct 2026
- Optimization: tuning MAXDOP and cost threshold for parallelism on SQL ServerDatabases · 25 Oct 2026
- Optimization: tuning SQL Server from wait statistics - find the real bottleneck before adding hardwareDatabases · 25 Oct 2026
- Optimization: when Photon pays off on Azure Databricks - test it per job, not per workspaceDatabricks on Azure · 25 Oct 2026
- Sev1: Databricks streaming job falling behind Event Hubs — lag growing, data hours lateDatabricks on Azure · 25 Oct 2026
- The job that never finishes: alerting when SQL Agent jobs run much longer than normalDatabases · 25 Oct 2026
- Transformation: putting PgBouncer in front of PostgreSQL to end connection stormsDatabases · 25 Oct 2026
- Transformation: single-node pandas jobs to PySpark (or pandas API on Spark)Databricks on Azure · 25 Oct 2026
- Sev1: Autonomous Database refusing connections — ORA-00018 sessions exhausted or CPU saturatedOCI · 24 Oct 2026
- Sev1: DynamoDB throttling — ProvisionedThroughputExceeded, hot partitions and fast reliefAWS · 24 Oct 2026
- After the SQL Server migration: validation, compatibility level and performance tuningDatabases · 23 Oct 2026
- Azure SQL Database best practices: a production checklist for design, security, performance, resilience and costDatabases · 23 Oct 2026
- Azure VM disk is slow: finding IOPS and throughput throttling on managed disksAzure · 23 Oct 2026
- Databricks job performance tuning: AQE, shuffle, skew, joins, Photon and file layoutData Platform · 23 Oct 2026
- Measuring SQL Agent with Performance Monitor: job counters, collection and per-job CPU and IODatabases · 23 Oct 2026
- Needle-in-a-haystack lookups on Delta: when Bloom filter indexes pay off on Azure DatabricksDatabricks on Azure · 23 Oct 2026
- PostgreSQL queries stuck waiting on locks: find the blocker and stop the pile-upDatabases · 23 Oct 2026
- Reading SQL Agent history like a DBA: queries for failures, durations, trends and slow stepsDatabases · 23 Oct 2026
- Sizing SQL Server for the cloud: capture a performance baseline and map it to vCores and instance typesDatabases · 23 Oct 2026
- Autonomous Database is slow: Performance Hub, ECPU scaling and service choiceOCI · 22 Oct 2026
- Azure Data Factory copy activity is slow: tuning DIUs, parallelism and partitionsData Platform · 22 Oct 2026
- Azure Event Hubs ServerBusy and throttling: throughput units and partitionsData Platform · 22 Oct 2026
- Azure SQL Database is slow: high CPU, DTU limits and throttlingAzure · 22 Oct 2026
- Azure VM at 100% CPU: finding the process without logging inAzure · 22 Oct 2026
- Database monitoring foundation: the metrics and alerts every DBA team needsDatabases · 22 Oct 2026
- Delta Lake table maintenance: OPTIMIZE, VACUUM and clusteringData Platform · 22 Oct 2026
- Finding slow MySQL queries with the slow query log and Performance SchemaDatabases · 22 Oct 2026
- How to read an Oracle AWR report when the customer says 'the database is slow'Databases · 22 Oct 2026
- Kafka consumer lag keeps growing: a troubleshooting guideData Platform · 22 Oct 2026
- Microsoft Fabric capacity throttling: why reports are slow and jobs are rejectedData Platform · 22 Oct 2026
- MongoDB slow queries: profiler, explain() and the ESR index ruleDatabases · 22 Oct 2026
- MySQL 'Too many connections' (error 1040): find the cause and fix itDatabases · 22 Oct 2026
- MySQL replication lag: finding the cause and fixing itDatabases · 22 Oct 2026
- PostgreSQL 'too many clients already': fixing connection exhaustionDatabases · 22 Oct 2026
- PostgreSQL standalone production configuration: memory, WAL, autovacuum, logging and backupsDatabases · 22 Oct 2026
- Query suddenly slow in SQL Server: fix plan regressions with Query StoreDatabases · 22 Oct 2026
- RDS database at high CPU: finding the culprit with Performance InsightsAWS · 22 Oct 2026
- Reading PostgreSQL EXPLAIN ANALYZE: find the slow step in five minutesDatabases · 22 Oct 2026
- Reading the Spark UI to explain a slow job to a customerData Platform · 22 Oct 2026
- Slow disk on EC2: troubleshooting EBS volume performanceAWS · 22 Oct 2026
- Snowflake queries are slow: queuing, spilling and pruningData Platform · 22 Oct 2026
- SQL Server tempdb full or slow: find the consumer and fix contentionDatabases · 22 Oct 2026
- Synapse dedicated SQL pool slow queries: distribution skew and data movementData Platform · 22 Oct 2026
- The small-files problem in data lakes: detect it and compact itData Platform · 22 Oct 2026
- Vector index operations: HNSW tuning, memory sizing and measuring recallAI & GenAI · 22 Oct 2026
- Debugging failed Databricks jobs: OOM, skew and slow stagesData Platform · 15 Oct 2026
- PostgreSQL: finding table bloat and fixing autovacuum lagDatabases · 12 Oct 2026
- SQL Server blocking and deadlock triageDatabases · 30 Sept 2026