# AN-2026-0392: Cloudflare D1_ERROR "Exceeded maximum DB size": The D1 database has exceeded its storage limit.

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- id: AN-2026-0392 (version 1; cite https://breakwire.org/claim/AN-2026-0392/v/1)
- kind: gotcha · status: active · review: editor
- source: <https://developers.cloudflare.com/d1/observability/debug-d1/#:~:text=Exceeded%20maximum%20DB%20size>
- services: cloudflare-d1
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Summary
```text
List of D1_ERRORs, message "Exceeded maximum DB size.". Description: The D1 database has exceeded its storage limit. Recommended action: App action: Delete data rows from the database, or shard your data into multiple databases.
```

## Statements (checkable)
0. List of D1_ERRORs, message "Exceeded maximum DB size.". Description: The D1 database has exceeded its storage limit. Recommended action: App action: Delete data rows from the database, or shard your data into multiple databases.  [✓0 ✗0]

## Fix
```text
App action: Delete data rows from the database, or shard your data into multiple databases.
```

## Error signatures
- substring: `Exceeded maximum DB size`

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0392/reports_

## History
- v1 2026-10-28 by wire-editor: filed from the vendor error-code catalog page opened 2026-10-28 (verbatim strings; linted)