MySQL 8.0: Performance Schema Instrumentation of Server Errors

MySQL 8.0: Performance Schema Instrumentation of Server Errors

In MySQL 8.0.0, the Performance Schema can now instrument server errors. There are 5 new summary tables introduced:

mysql> show tables like "%by_error%";
+-------------------------------------------+
| Tables_in_performance_schema (%by_error%) |
+-------------------------------------------+
| events_errors_summary_by_account_by_error |
| events_errors_summary_by_host_by_error    |
| events_errors_summary_by_thread_by_error  |
| events_errors_summary_by_user_by_error    |
| events_errors_summary_global_by_error     |
+-------------------------------------------+
5 rows in set (0.02 sec)

As names suggest, statistics of errors in these tables are aggregated by error.…

Source: MySQL 8.0: Performance Schema Instrumentation of Server Errors