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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-perror.html
The following table includes all options that are specific to the NDB Cluster program ndb_perror. ndb_perror shows information about an NDB error, given its error code. This includes the error message, the type of error, and whether the error is ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-redo-log-reader.html
Options that can be used with ndb_redo_log_reader are shown in the following table. Reads a redo log file, checking it for errors, printing its contents in a human-readable format, or both. ndb_redo_log_reader is intended for use primarily by NDB ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-secretsfile-reader.html
cac256e18b2ddf6b5ef82d99a72f18e864b78453cc7fa40bfaf0c40b91122d18 These and other options that can be used with ndb_secretsfile_reader are shown in the following table. ndb_secretsfile_reader gets the encryption key from an NDB encryption secrets ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-waiter.html
Options that can be used with ndb_waiter are shown in the following table. ndb_waiter repeatedly (each 100 milliseconds) prints out the status of all cluster data nodes until either the cluster reaches a given status or the --timeout limit is ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-shm-definition.html
See Section 25.4.3.14, “Configuring NDB Cluster Send Buffer Parameters”, and Section 25.6.16.65, “The ndbinfo transporters Table”, for more information. Communications between NDB cluster nodes are normally handled using TCP/IP. The shared ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-server-side-help.html
The proper operation of this command requires that the help tables in the mysql database be initialized with help topic information (see Section 7.1.17, “Server-Side Help Support”). To make a more specific request, please type 'help <item>', ...
https://dev.mysql.com/doc/refman/8.0/en/not-enough-file-handles.html
To tell mysqld to keep open fewer files at a time, you can make the table cache smaller by reducing the value of the table_open_cache system variable (the default value is 64). This may not entirely prevent running out of file descriptors because in ... If you get ERROR 'file_name' not found (errno: 23), Can't open file: file_name (errno: 24), or any other error with errno 23 or errno 24 from MySQL, it means that you have not allocated enough file descriptors for the MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-innodb-transaction-management.html
When rows are modified or deleted within a long-running transaction, other transactions using the READ COMMITTED and REPEATABLE READ isolation levels have to do more work to reconstruct the older data if they read those same rows. When a ... To ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-build-configuration.html
If you install MySQL over a previous installation that was configured without the Performance Schema (or with an older version of the Performance Schema that has missing or out-of-date tables). One indication of this issue is the presence of ...It ...
https://dev.mysql.com/doc/refman/8.0/en/regexp.html
For example, it can be specified as a string expression or table column. This section discusses the functions and operators available for regular expression matching and illustrates, with examples, some of the special characters and constructs that ...