> ## 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.

# Data Guard Transport Lag (seconds), Oracle Database KPI card, Vortex IQ Nerve Centre

> Data Guard only - 'transport lag' from V$DATAGUARD_STATS. Growing transport lag = redo not shipping (network / archiver stuck).

**[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:** Replication
* **Type:** Supporting Metrics
* **Chart:** kpi
* **Format:** number
* **Time window:** RT
* **Alert trigger:** >30s sustained

## Calculation

Data Guard only - 'transport lag' from V\$DATAGUARD\_STATS. Growing transport lag = redo not shipping (network / archiver stuck).

## Known limitations

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