---
title: "Aerospike Database 6.4.0.1 Release Notes"
description: "Aerospike Database 6.4.0.1 release notes covering Tools 9.0.0 updates and fixes for SMD and secondary index issues."
---

# Aerospike Database 6.4.0.1 Release Notes

> For the complete documentation index see: [llms.txt](https://aerospike.com/docs/llms.txt)
> 
> All documentation pages available in markdown.

August 10, 2023  |  **[Download](https://aerospike.com/download/)**

### Updates

-   Aerospike Tools [9.0.0](https://aerospike.com/docs/database/tools/release-notes#tools-900).

## Improvements

The following issues are resolved with this hotfix.

### AER-6662

(SMD) Internally retried SMD events are not thread safe at shutdown or with certain info commands.

Introduced in: 4.5.1.5

Editions affected: Enterprise, Federal, & Community

### AER-6663

(SINDEX) Secondary index statistics may be incorrect on a warm restart following a shutdown which occurred while dropping the secondary index.

Introduced in: 6.1.0.0

Editions affected: Enterprise & Federal Only

### AER-6664

(SINDEX) When cool restarting [`data-in-memory`](https://aerospike.com/docs/database/reference/config#namespace__data-in-memory) namespaces, a secondary-indexed record which expires after startup but before being loaded into memory will not be removed from the secondary index.

Introduced in: 6.1.0.0

Editions affected: Enterprise & Federal Only

## Known issues

[Known issues for 6.4.0.1](https://aerospike.com/docs/database/reference/issues?search=6.4.0.1)