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https://dev.mysql.com/doc/refman/8.0/en/lock-instance-for-backup.html
REPAIR TABLE TRUNCATE TABLE, OPTIMIZE TABLE, and account management statements are blocked. LOCK INSTANCE FOR BACKUP permits DDL operations that only affect user-created temporary tables. In effect, files that belong to user-created temporary tables ... LOCK INSTANCE FOR BACKUP UNLOCK INSTANCE LOCK INSTANCE FOR BACKUP acquires an instance-level backup lock that permits DML during an online backup while preventing operations that could result in an inconsistent ...
https://dev.mysql.com/doc/refman/8.0/en/myisamchk-repair-options.html
--correct-checksum Command-Line Format --correct-checksum Correct the checksum information for the table. See also the description of this option under table checking options. For a description of the output format, see Section 6.6.4.5, “Obtaining ...--data-file-length=len, -D len Command-Line Format --data-file-length=len Type Numeric The maximum length of the data file (when re-creating data file when it is ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-logs-cluster-log.html
The following table lists the most common NDB cluster log messages. Table 25.53 Common NDB cluster log messages Log Message Description Event Name Event Type Priority Severity Node mgm_node_id: Node data_node_id Connected The data node having node ...For information about the cluster log, log events, and event types, see Section 25.6.3, “Event Reports Generated in NDB ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-mta.html
Transaction Dependency and Writeset Handling Transaction dependencies are detected using analysis of each transaction's writeset, that is, the set of rows (table, key values) written by the transaction. Where a table has secondary unique keys, these ...To use this functionality with NDB Cluster, it is necessary that the following three conditions be met: Binary log transaction dependencies are determined at the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-pitr.html
Performing point-in-time recovery of NDB Cluster tables with NDB Cluster and NDB Cluster Replication can be accomplished using a native NDB data backup (taken by issuing CREATE BACKUP in the ndb_mgm client) and restoring the ndb_binlog_index table ... Point-in-time recovery—that is, recovery of data changes made since a given point in time—is performed after restoring a full backup that returns the server to its state when the backup was ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-filtering.html
The setup_instruments table lists the instruments for which events can be collected, whether they are enabled, and (for enabled instruments) whether to collect timing information: mysql> SELECT NAME, ENABLED, TIMED FROM ... Events are processed in a ...
https://dev.mysql.com/doc/refman/8.0/en/reloading-delimited-text-dumps.html
For backups produced with mysqldump --tab, each table is represented in the output directory by an .sql file containing the CREATE TABLE statement for the table, and a .txt file containing the table data. To reload a table, first change location ...
https://dev.mysql.com/doc/refman/8.0/en/replication-privilege-checks-account.html
Executing internal-use BINLOG statements to apply mysqlbinlog output, provided that the account also has permission for the tables and operations in those statements. Updating the system tables mysql.gtid_executed, mysql.slave_relay_log_info, ...
https://dev.mysql.com/doc/refman/8.0/en/reset-replica.html
The statement does not change the values of gtid_executed or gtid_purged, or the mysql.gtid_executed table. RESET REPLICA does not change any replication connection parameters, which include the source's host name and port, the replication user ...
https://dev.mysql.com/doc/refman/8.0/en/revoke.html
To revoke all privileges from a user, use one of the following statements; either of these statements drops all global, database, table, column, and routine privileges for the named users or roles: REVOKE ALL PRIVILEGES, GRANT OPTION FROM ...[IGNORE ...