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https://dev.mysql.com/doc/refman/8.0/en/innodb-information-schema-examples-compression-sect.html
Example 17.1 Using the Compression Information Schema Tables The following is sample output from a database that contains compressed tables (see Section 17.9, “InnoDB Table and Page Compression”, INNODB_CMP, INNODB_CMP_PER_INDEX, and ...The ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-tables.html
This section covers topics related to InnoDB tables. ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-tablespace.html
This section covers topics related to InnoDB tablespaces. ...
https://dev.mysql.com/doc/refman/8.0/en/sys-innodb-lock-waits.html
These views summarize the InnoDB locks that transactions are waiting for. The innodb_lock_waits and x$innodb_lock_waits views have these columns: wait_started The time at which the lock wait started. wait_age How long the lock has been waited for, ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl-space-requirements.html
If the operation takes a long time and concurrent DML modifies the table so much that the size of the temporary log file exceeds the value of innodb_online_alter_log_max_size, the online DDL operation fails with a DB_ONLINE_LOG_TOO_BIG error, and ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-troubleshooting-recovery.html
From MySQL 8.0.26, checkpoints and advancing the checkpoint LSN are not permitted until redo log recovery is complete and data dictionary dynamic metadata (srv_dict_metadata) is transferred to data dictionary table (dict_table_t) objects. If an ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-session-temp-tablespaces-table.html
The INNODB_SESSION_TEMP_TABLESPACES table provides metadata about session temporary tablespaces used for internal and user-created temporary tables. The INNODB_SESSION_TEMP_TABLESPACES table has these columns: ID The process or session ID. Use the ...Session temporary tablespaces are recreated each time the server is ...A ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl-failure-conditions.html
The tmpdir or innodb_tmpdir file system runs out of disk space, while MySQL writes temporary sort files on disk during index creation. The operation takes a long time and concurrent DML modifies the table so much that the size of the temporary ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl-single-multi.html
Before the introduction of online DDL, it was common practice to combine many DDL operations into a single ALTER TABLE statement. Because each ALTER TABLE statement involved copying and rebuilding the table, it was more efficient to make several ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-dml.html
In the following SQL examples, t1 refers to the table used for memcached operations, based on the configuration in the innodb_memcache.containers table. Benchmarks suggest that the daemon_memcached plugin speeds up DML operations (inserts, updates, ...INSERT becomes add, UPDATE becomes set, incr or decr, and DELETE becomes ...