MySQL5.7でtable performance_schema.session_variables doesn't exist
MySQL5.7MySQLWorkBenchで接続しようとしたら、次の警告が表示され接続できない。
table performance_schema.session_variables doesn't exist
DBを確認すると、確かにperformance_schema.session_variablesというテーブルは無い。
mysql> use performance_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
mysql> show tables;
+----------------------------------------------------+
| Tables_in_performance_schema |
+----------------------------------------------------+
| accounts |
| cond_instances |
| events_stages_current |
| events_stages_history |
| events_stages_history_long |
| events_stages_summary_by_account_by_event_name |
| events_stages_summary_by_host_by_event_name |
| events_stages_summary_by_thread_by_event_name |
| events_stages_summary_by_user_by_event_name |
| events_stages_summary_global_by_event_name |
| events_statements_current |
| events_statements_history |
| events_statements_history_long |
| events_statements_summary_by_account_by_event_name |
| events_statements_summary_by_digest |
| events_statements_summary_by_host_by_event_name |
| events_statements_summary_by_thread_by_event_name |
| events_statements_summary_by_user_by_event_name |
| events_statements_summary_global_by_event_name |
| events_waits_current |
| events_waits_history |
| events_waits_history_long |
| events_waits_summary_by_account_by_event_name |
| events_waits_summary_by_host_by_event_name |
| events_waits_summary_by_instance |
| events_waits_summary_by_thread_by_event_name |
| events_waits_summary_by_user_by_event_name |
| events_waits_summary_global_by_event_name |
| file_instances |
| file_summary_by_event_name |
| file_summary_by_instance |
| host_cache |
| hosts |
| mutex_instances |
| objects_summary_global_by_type |
| performance_timers |
| rwlock_instances |
| session_account_connect_attrs |
| session_connect_attrs |
| setup_actors |
| setup_consumers |
| setup_instruments |
| setup_objects |
| setup_timers |
| socket_instances |
| socket_summary_by_event_name |
| socket_summary_by_instance |
| table_io_waits_summary_by_index_usage |
| table_io_waits_summary_by_table |
| table_lock_waits_summary_by_table |
| threads |
| users |
+----------------------------------------------------+
52 rows in set (0.00 sec)
どうも、MySQL5.6 → 5.7にアップグレードした時になんらかの問題があったようだ。 このコマンドで更新すると修正され、無事接続出来た。
＄ mysql_upgrade -u root -p </strong>
Enter password:
Checking if update is needed.
Checking server version.
Running queries to upgrade MySQL server.
Checking system database.
mysql.columns_priv OK
mysql.db OK
mysql.engine_cost OK
mysql.event OK
mysql.func OK
mysql.general_log OK
mysql.gtid_executed OK
mysql.help_category OK
mysql.help_keyword OK
mysql.help_relation OK
mysql.help_topic OK
mysql.innodb_index_stats OK
mysql.innodb_table_stats OK
mysql.ndb_binlog_index OK
mysql.plugin OK
mysql.proc OK
mysql.procs_priv OK
mysql.proxies_priv OK
mysql.server_cost OK
mysql.servers OK
mysql.slave_master_info OK
mysql.slave_relay_log_info OK
mysql.slave_worker_info OK
mysql.slow_log OK
mysql.tables_priv OK
mysql.time_zone OK
mysql.time_zone_leap_second OK
mysql.time_zone_name OK
mysql.time_zone_transition OK
mysql.time_zone_transition_type OK
mysql.user OK
Upgrading the sys schema.
Checking databases.
sys.sys_config OK
Upgrade process completed successfully.
Checking if update is needed.
＄ /etc/init.d/mysqld restart
MySQLの再起動必須
※ mysqldを再起動しないと、‘performance_schema’.‘session_variables’ has the wrong structure というエラーになるので注意。
mysql - Table ‘performance_schema.session_variables’ doesn’t exist - Stack Overflow mysql - Table ‘performance_schema.session_variables’ doesn’t exist - Stack Overflow