https://mariadb.com/docs/server/security/limiting-size-of-created-disk-temporary-files-and-tables/max_tmp_session_space_usage-system-variable
max_tmp_session_space_usage System Variable | Server | MariaDB Documentation
Documentation for the system variable that restricts the maximum total size of temporary files and tables allowed for an individual user session.
space usage systemmax tmp
https://mariadb.com/docs/server/security/limiting-size-of-created-disk-temporary-files-and-tables/max_tmp_total_space_usage-system-variable
max_tmp_total_space_usage System Variable | Server | MariaDB Documentation
Reference for the global system variable that defines the maximum cumulative disk space all user connections can consume for temporary files and tables.
space usage systemmax tmp