> ## 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.

# Archive Log Apply Gap, Oracle Database KPI card, Vortex IQ Nerve Centre

> Data Guard only - sequence gap between primary archived and standby applied (V$ARCHIVED_LOG). A growing gap shrinks the recovery window.

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

## At a glance

* **Category:** Backup
* **Type:** Supporting Metrics
* **Chart:** kpi
* **Format:** number
* **Time window:** RT
* **Alert trigger:** >0 sequences behind

## Calculation

Data Guard only - sequence gap between primary archived and standby applied (V\$ARCHIVED\_LOG). A growing gap shrinks the recovery window.

## Known limitations

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