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Glossary
DocumentaçãoTDSQL BoundlessGeneral ReferenceDatabase Parameter Descriptiontable_definition_cache

table_definition_cache

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Última atualização: 2026-03-27 17:54:08

Feature Description

table_definition_cache is used to set the number of cached table definition objects. The table definition cache stores metadata (such as column names and data types) of the tables in the database so that this information can be quickly accessed during query execution. When this limit is reached, the system disables the least recently used table definitions based on the least recently used (LRU) algorithm to free up space for new table definitions.
Note:
It is recommended to substitute table_open_cache for the table_definition_cache parameter.

Attribute Description

Required
Description
Parameter Type
ULONG
Default Value
4294967295
Value Range
400 ~ 4294967295
Effective Scope
GLOBAL
Restart Required
No
Anterior: sql_require_primary_keyPróximo: table_open_cache

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