Hi Expert, I encounter below issue with mariadb 10.3.15, any suggestions? BTW, it works well with 10.3.13. # mysql -h 127.0.0.1 -u root -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 3 Server version: 10.3.15-MariaDB Source distribution Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | +--------------------+ 4 rows in set (0.105 sec) MariaDB [(none)]> use information_schema; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed MariaDB [information_schema]> show databases; ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect... ERROR 2002 (HY000): Can't connect to MySQL server on '127.0.0.1' (115) ERROR: Can't connect to the server Thanks,