Memory corruption when writing a backup status file could lead to a database restart

Detail name	Value
Changelog Number	32206
Type	Bug
Status	Resolved
Affected Versions	Exasol 2025.1.0
Fix Versions	Exasol 2025.1.16
Resolution Date	2026-08-28

Description

Backup status files contain metadata such as backup file names and size statistics. Large status files could lead to memory corruption and database restarts during backup. Larger clusters and more backup levels increased this risk.

Workaround

Reduce the number of backup levels so that status files remain below the internal buffer limit. For example, if level 4 consistently fails, one may do backups only till level 3.

Fix

The memory corruption during backup is fixed and backups complete successfully.