PDF (US Ltr)
- 43.2Mb
PDF (A4)
- 43.3Mb
Man Pages (TGZ)
- 295.2Kb
Man Pages (Zip)
- 400.4Kb
Info (Gzip)
- 4.3Mb
Info (Zip)
- 4.3Mb
Search Results
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-status-variable-summary-tables.html
The Performance Schema makes status variable information available in the tables described in Section 29.12.15, “Performance Schema Status Variable Tables”. It also makes aggregated status variable information available in summary tables, ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-locks-per-fragment.html
This table also shows the total time spent waiting for locks successfully and unsuccessfully since fragment or table creation, or since the most recent restart. The values shown in all of the columns ex_req, ex_req_imm_ok, ex_wait_ok, ex_wait_fail, ... The locks_per_fragment table provides information about counts of lock claim requests, and the outcomes of these requests on a per-fragment basis, serving as a companion table to operations_per_fragment and ...
https://dev.mysql.com/doc/refman/8.0/en/myisam-crash-recovery.html
If your tables become corrupted frequently, you should try to find the reason why. For an explanation of how MyISAM tables can become corrupted, see Section 18.2.4, “MyISAM Table Problems”. If you run mysqld with external locking disabled (which ... This section describes how to check for and deal with data corruption in MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/string-type-syntax.html
In some cases, MySQL may change a string column to a type different from that given in a CREATE TABLE or ALTER TABLE statement. Specifying the CHARACTER SET binary attribute for a character string data type causes the column to be created as the ...
https://dev.mysql.com/doc/refman/8.0/en/getting-information.html
You can obtain the CREATE TABLE statement necessary to create an existing table using the SHOW CREATE TABLE statement. What if you forget the name of a database or table, or what the structure of a given table is (for example, what its columns are ...You have previously seen SHOW DATABASES, which lists the databases managed by the ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-cmp-table.html
The INNODB_CMP and INNODB_CMP_RESET tables provide status information on operations related to compressed InnoDB tables. The INNODB_CMP and INNODB_CMP_RESET tables have these columns: PAGE_SIZE The compressed page size in bytes. Pages are ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-standard-monitor.html
The contents include the statement that failed as well as information about the constraint that failed and the referenced and referencing tables. The Lock Monitor is the same as the Standard Monitor except that it includes additional lock ...
https://dev.mysql.com/doc/refman/8.0/en/docker-mysql-more-topics.html
Warning Any software updates or installations users perform to the Docker container (including those for MySQL components) may conflict with the optimized MySQL installation created by the Docker image. Oracle does not provide support for MySQL ...A ...
https://dev.mysql.com/doc/refman/8.0/en/bnl-bka-optimization.html
In MySQL, a Batched Key Access (BKA) Join algorithm is available that uses both index access to the joined table and a join buffer. Benefits of BKA include improved join performance due to more efficient table scanning. Moreover, a join buffer can ...The BKA algorithm supports inner join, outer join, and semijoin operations, including nested outer ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-monitoring.html
You can monitor the status and progress of a cloning operation on the recipient MySQL server instance using the clone_status and clone_progress Performance Schema tables. Note The clone_status and clone_progress Performance Schema tables can be used ...To monitor a cloning operation on the donor MySQL server instance, use the clone stage events, as described in Monitoring Cloning Operations Using Performance Schema Stage ...