> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# JVM Heap Usage %, Neo4j KPI card, Vortex IQ Nerve Centre

> JVM heap used / committed from dbms.queryJmx('java.lang:type=Memory'). Sustained >85% = GC pressure, OOM risk.

**[Nerve Centre KPIs](/nerve-centre/kpi-cards/neo4j) · [Audit Profile](/nerve-centre/kpi-cards/neo4j/audit) · [Sentiment Settings](/nerve-centre/kpi-cards/neo4j/sentiment)**

## At a glance

* **Category:** Capacity
* **Type:** Supporting Metrics
* **Chart:** gauge
* **Format:** percent
* **Time window:** RT
* **Alert trigger:** >85%

## Calculation

JVM heap used / committed from dbms.queryJmx('java.lang:type=Memory'). Sustained >85% = GC pressure, OOM risk.

## Known limitations

*Known limitations, FAQs, or reconciliation notes specific to this card. Replace this block when authored.*