Show TOP-10 Largest Tables

This article outlines the command to provide the output of the Top-10 Largest Tables in your database.

This article is based on this error message found in the server.log file

Caused by: java.sql.SQLException: The table 'rc_notification_hist' is full in the server log.

MySQL Command to Show TOP-10 largest tables

1. Open up Putty or Command-line
2. cmd> oware (Win) or . /etc/.dsienv for (Linux)
3. Log in to MySql:  cmd> mysql -u root --password=dorado
4. Two line Oware command to show TOP-10 largest tables

SELECT CONCAT(table_schema, '.', table_name),
CONCAT(ROUND(table_rows / 1000000, 2), 'M') rows,
CONCAT(ROUND(data_length / ( 1024 * 1024 * 1024 ), 2), 'G') DATA,
CONCAT(ROUND(index_length / ( 1024 * 1024 * 1024 ), 2), 'G') idx,
CONCAT(ROUND(( data_length + index_length ) / ( 1024 * 1024 * 1024 ), 2), 'G') total_size,
ROUND(index_length / data_length, 2) idxfrac
FROM information_schema.TABLES
ORDER BY data_length + index_length DESC
LIMIT 10;