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   |  show engine innodb status\G;
 
  show processlist;
  SELECT * FROM information_schema.processlist WHERE Command != 'Sleep' AND Time > 10 ORDER BY Time DESC;
 
  kill id
 
  show status like ‘%lock%’ show OPEN TABLES where In_use > 0; 
 
  SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCKS; 
 
  SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCK_WAITS; 
 
  show status like ‘%lock%’;
 
  show grants for user_name; 
 
  show status; 
 
  show variables; 
 
  show logs; 
 
  show warnings; 
 
  show errors; 
 
  show global status;
 
  show variables like 'max_connections';  show global status like 'max_used_connections'; 
 
  |