What tempdb is used for?

Question

The TempDB database is one of the most important SQL Server system databases, that is used to store temporary user objects, such as the temporary tables that are defined by the user or returned from table-valued function execution, temporary stored procedures, table variables or indexes. 13 янв. 2020 г.

What is the purpose of TempDB?

The tempdb system database is a global resource that holds: Temporary user objects that are explicitly created. They include global or local temporary tables and indexes, temporary stored procedures, table variables, tables returned in table-valued functions, and cursors.

How does TempDB work in SQL Server?

TempDB is a workhorse of SQL Server performing a number of functions to support both system and internal operations. With this workload TempDB will process a large number of database writes, which requires low-latency, high throughput underlying storage.

What is TempDB MDF used for?

TempDB is used by the server for operations such as storing temporary and work tables, ordering records, storing records' versions, etc'. If the TempDB is growing, then the server needs more space in it.

What happens if TempDB is full?

The TempDB database is special in many ways, but an interesting aspect is that when its files automatically grow when they become full, this growth is not persisted and will be undone on the next restart of the SQL Server service.

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