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Where are the temporary tables created in InnoDB?
A dedicated temporary tablespace also means that it is no longer necessary to save temporary table metadata to the InnoDB system tables. Compressed temporary tables, which are temporary tables created using the ROW_FORMAT=COMPRESSED attribute, are created in file-per-table tablespaces in the temporary file directory.
Where are the temporary tables created in MySQL 5.6?
In MySQL 5.6, non-compressed temporary tables are created in individual file-per-table tablespaces in the temporary file directory, or in the InnoDB system tablespace in the data directory if innodb_file_per_table is disabled.
When to change max heap table size in InnoDB?
When you do CREATE TABLE ENGINE=MEMORY, it is given a limit of the current value of max_heap_table_size. You can, and “should”, change that setting just before doing that CREATE. Too large a value could waste precious RAM.
Where are the compressed tables created in MySQL?
Compressed temporary tables, which are temporary tables created using the ROW_FORMAT=COMPRESSED attribute, are created in file-per-table tablespaces in the temporary file directory. The temporary tablespace is removed on normal shutdown or on an aborted initialization, and is recreated each time the server is started.
Do you need to increase TMP _ table _ size?
We all know disk based temporary tables are bad and you should try to have implicit temporary tables created in memory where possible, do to the fact that you should increase tmp_table_size to appropriate value and avoid using blob/text columns which force table creation on the disk because MEMORY storage engine does not support them. Right? Wrong.
Where are the temporary tablespaces located in MariaDB?
In earlier versions, temporary tablespaces exist as part of the InnoDB system tablespace or were file-per-table depending on the configuration of the innodb_file_per_table system variable. When the user creates a temporary table using the CREATE TEMPORARY TABLE statement and the engine is set as InnoDB, MariaDB creates a temporary tablespace file.