show status like 'max_used_connections'
show variables like 'max_connections'
show variables like '%max%'
show variables like '%digest%'
SELECT @@performance_schema_max_digest_length;
SET @@performance_schema_max_digest_length = 10240;
UPDATE performance_schema.setup_instruments SET ENABLED = 'YES', TIMED = 'YES' WHERE NAME LIKE 'statement/%';
UPDATE performance_schema.setup_instruments SET ENABLED = 'NO', TIMED = 'NO' WHERE NAME LIKE 'statement/%';
SELECT @@global.transaction_ISOLATION;
SELECT @@transaction_ISOLATION;
SELECT @@TX_ISOLATION;
SELECT @@sql_mode;