reindex tables in mariadb in case of slow site - jigneshpshah/greycube_helpmanual GitHub Wiki
Occassionaly, while restoring db from backup the indexing on tables might be broken. This could be verified in recorder, if page load takes unusually long. The solution is to reindex the tables.
https://mariadb.com/kb/en/mysqlcheck/
from terminal using mysqlcheck
reindex all tables
sudo mysqlcheck -a dbname -p
from dbeaver for a specific table
use dbname;
ANALYZE TABLE tabCommunication;