Setting a Default Temporary Tablespace in Oracle Database

Alters The Default Temporary Tablespace for the Entire Database to "temp"

Sample SQL Command

1alter database default temporary tablespace temp


  • To specify the preferred location where temporary data should be stored for all user sessions within the database. This provides centralized management and potentially performance benefits by consolidating temporary data storage.


  1. alter database: Initiates the modification of database-level settings.
  2. default temporary tablespace temp: Sets the new default temporary tablespace name to "temp."

Key Points:

  • This code requires DBA or SYSDBA privileges to execute.
  • The specified tablespace "temp" must already exist and be available.
  • Modifying the default temporary tablespace affects all new user sessions launched after the change. Existing sessions will continue using their previously assigned temporary tablespace unless explicitly altered.
  • Consider potential impacts on performance and space usage, as all temporary data will now be stored in the specified tablespace.
  • Monitor temporary tablespace usage and adjust the default or individual user settings if needed to optimize performance and storage allocation.

Insights and Explanations:

  • Changing the default temporary tablespace can be useful for centralizing temporary data management, simplifying cleanup, and potentially improving performance depending on specific configurations.
  • Carefully evaluate the size and location of the "temp" tablespace to ensure it can accommodate the anticipated temporary data volume without performance bottlenecks.
  • Remember that this change doesn't automatically migrate existing temporary data from previous spaces. If needed, consider data migration strategies or cleanup of old temporary objects.

Before using this code in production, ensure you understand the potential impacts on your specific database environment and adjust the tablespace name and any additional settings necessary for your needs.

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