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Re: coufused about ibtmp1
Posted by: Rasheed Mosan
Date: November 20, 2025 02:22PM

ibtmp1 is the system temporary tablespace used by InnoDB for internal temporary tables and some user-created temporary tables that cannot be fully held in memory.

Memory-based temp tables go to #innodb_temp (controlled by innodb_temp_tablespaces_dir).

On-disk or larger temporary tables automatically go into ibtmp1.

So both statements are correct: small in-memory temp tables use #innodb_temp, while larger or internal temp tables are stored in ibtmp1.

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Re: coufused about ibtmp1
November 20, 2025 02:22PM


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