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It is a bad practice to frequently create and drop temporary tables in Oracle. CREATE GLOBAL TEMPORARY TABLE today_sales(order_id NUMBER) ON COMMIT PRESERVE ROWS; Oracle 18c added private temporary tables, which are single-session in-memory objects.
Learn how to create a global temporary table in Oracle using the CREATE GLOBAL TEMPORARY TABLE statement. See the difference between transaction-specific and session-specific global temporary tables and how to use indexes and tablespaces with them.
Creation of Global Temporary Tables. The data in a global temporary table is private, such that data inserted by a session can only be accessed by that session. The session-specific rows in a global temporary table can be preserved for the whole session, or just for the current transaction.
Specify GLOBAL TEMPORARY to create a temporary table, whose definition is visible to all sessions with appropriate privileges. The data in a temporary table is visible only to the session that inserts the data into the table. When you first create a temporary table, its metadata is stored in the data dictionary, but no space is allocated for ...
Learn how to create a private temporary table in Oracle Database that is stored in memory and dropped at the end of a transaction or session. See examples of transaction-specific and session-specific private temporary tables and their differences from global temporary tables.
This 15-minute tutorial shows you how create and use private temporary tables and how to manage them in your session. Background. Prior to Oracle Database 18c, only Global Temporary Tables existed.
This Oracle tutorial explains how to use the Oracle LOCAL TEMPORARY TABLES with syntax and examples. Oracle LOCAL TEMPORARY TABLES are distinct within modules and embedded SQL programs within Oracle sessions.
