---
title: "Aerospike Database 6.4.0.3 Release Notes"
description: "Release notes for Aerospike Database 6.4.0.3, featuring hotfixes for fabric TLS, migration metadata, and KVS compatib..."
---

# Aerospike Database 6.4.0.3 Release Notes

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

September 29, 2023  |  **[Download](https://aerospike.com/download/)**

## Improvements

The following improvements are included with this hotfix.

### AER-6673

(MIGRATION) Limit outstanding migration metadata to ~32MiB per incoming migration. \[Note: this introduced an issue fixed in AER-6691.\]

Editions affected: Enterprise & Federal

### AER-6681

(FABRIC) Improved performance of fabric when using TLS.

Editions affected: Enterprise & Federal

## Bug fixes

The following issues are resolved with this hotfix.

### AER-6670

(SINDEX) For storage-backed [`data-in-memory`](https://aerospike.com/docs/database/reference/config#namespace__data-in-memory) namespaces, rebuilding secondary indexes during cold start may generate spurious warnings.

Editions affected: Community, Enterprise, & Federal

### AER-6680

(KVS) Aerospike is compatible with Linux kernels supporting a 4K memory page size. Larger page sizes cause memory allocation incompatibilities for `jemalloc` and `mmap`\-based features such as indexes in flash or PMem.

Some RHEL 7 and RHEL 8 variants for 64-bit ARM have changed their default kernels to a 64K memory page size, and are therefore no longer supported. Aerospike users with deployments on these operating system versions must upgrade to one whose kernel has a 4K page size. This includes all 64-bit ARM RHEL 9 variants where RedHat reversed the default page size to 4K. Amazon Linux 2 and Amazon Linux 2023 on 64-bit ARM are not affected.

Editions affected: Community, Enterprise, & Federal

## Known issues

[Known issues for 6.4.0.3](https://aerospike.com/docs/database/reference/issues?search=6.4.0.3)