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Oracle performance tuning
Oracle database performance tuning that finds the real bottleneck
Slow screens and overnight jobs that overrun usually come down to a handful of SQL statements or one resource limit. We find them with evidence, fix them, and show you the before and after.
Quick answer
How do you tune Oracle database performance?
Oracle performance tuning starts with evidence: AWR, ASH and SQL Monitor reports where Diagnostics and Tuning Packs are licensed, or Statspack where they are not. Most gains come from fixing a few high-cost SQL statements through better execution plans, statistics and indexes, then from memory, I/O and contention fixes.
What we look at
Where Oracle performance problems come from
SQL and execution plans
Top SQL by elapsed time and logical reads, plan changes, bad join orders and missing or unused indexes.
Statistics
Stale or missing optimizer statistics, histograms and the gathering schedule.
Waits and contention
Lock waits, latch and mutex contention, hot blocks and sequence caching.
Memory
SGA and PGA sizing, buffer cache efficiency and sort or hash spills to temp.
I/O and storage
Redo log sizing, I/O latency by file and ASM disk group balance.
Application patterns
Row-by-row processing, missing bind variables and chatty calls that tuning the database alone can't fix.
Tools
Evidence, not guesses
We use AWR, ASH and SQL Monitor reports where you are licensed for the Diagnostics and Tuning Packs, and Statspack and dictionary views where you are not, so the review never creates a license problem.
Health check deliverables
- Top problem SQL with recommended fixes
- Configuration and parameter review
- Backup, patch and security findings
- Ranked list of fixes with effort and risk
- Before and after measurements for fixes we apply
FAQ
Questions buyers ask us
What is an Oracle database health check?
A structured review of configuration, performance, backups, patch level, space and security, ending with a ranked list of risks and fixes.
Do we need the Diagnostics and Tuning Packs for performance tuning?
AWR, ASH and SQL Tuning Advisor require those licensed packs on Enterprise Edition. Without them, tuning uses Statspack, dictionary views and manual plan analysis.
How quickly can performance improve?
Fixes to a few problem SQL statements often bring the largest gains and can be applied quickly. Structural issues such as storage or application design take longer.
Why did performance change after an upgrade or patch?
Usually execution plans changed because of optimizer changes or new statistics. Comparing plans before and after and fixing the regressed statements resolves most cases.
Next step
Tell us what you need to build or who you need to hire.
A 30-minute call with a senior architect. You leave with a scoped plan or a role profile, whether or not you work with us.