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Search Results
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-server-locks.html
The server_locks table is similar in structure to the cluster_locks table, and provides a subset of the information found in the latter table, but which is specific to the SQL node (MySQL server) where it resides. (The cluster_locks table provides ...This may be useful for correlating locking patterns with specific MySQL user sessions, queries, or use ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-print-frag-file.html
Like ndb_print_backup_file, ndb_print_sys_file, and ndb_print_schema_file (and unlike most of the other NDB utilities that are intended to be run on a management server host or to connect to a management server), ndb_print_frag_file must be run on a ...It is intended for use in helping to diagnose issues with data node ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-two-channels.html
In a more complete example scenario, we envision two replication channels to provide redundancy and thereby guard against possible failure of a single replication channel. This requires a total of four replication servers, two source servers on the ...The replication processes can be initiated by issuing the START REPLICA statement on each of the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-single-user-mode.html
When entering single user mode, connections to all other API nodes are closed gracefully and all running transactions are aborted. You can use the ALL STATUS command in the ndb_mgm client to see when the cluster has entered single user mode. Single ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-enterprise-encryption.html
These functions enable Enterprise applications to perform the following operations: Implement added data protection using public-key asymmetric cryptography Create public and private keys and digital signatures Perform asymmetric encryption and ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-enterprise.html
Like MySQL Community Edition, MySQL Enterprise Edition includes MySQL Server, a fully integrated transaction-safe, ACID-compliant database with full commit, rollback, crash-recovery, and row-level locking capabilities. In addition, MySQL Enterprise ...
https://dev.mysql.com/doc/refman/8.0/en/optimize-blob.html
See Section 10.4.2.2, “Optimizing for Character and String Types” for reasons why a binary VARCHAR column is sometimes preferable to an equivalent BLOB column. For a table with several columns, to reduce memory requirements for queries that do ... When storing a large blob containing textual data, consider compressing it ...
https://dev.mysql.com/doc/refman/8.0/en/password-security-user.html
On some systems, your password becomes visible to system status programs such as ps that may be invoked by other users to display command lines. MySQL clients typically overwrite the command-line password argument with zeros during their ... MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-instance-tables.html
They provide event names and explanatory notes or status information: cond_instances: Condition synchronization object instances file_instances: File instances mutex_instances: Mutex synchronization object instances rwlock_instances: Lock ...Each ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-table-descriptions.html
Other similar tables contain current events at different levels of the event hierarchy: events_stages_current for stage events, events_statements_current for statement events, and events_transactions_current for transaction events. For example, to ... Tables in the performance_schema database can be grouped as follows: Setup ...