A tablespace is a logical storage unit that contains data in a database. Temp tablespaces are used to store temporary data that is created and used by the database during its operation. This data can include temporary tables, indexes, and other objects. It is important to monitor the usage of temp tablespaces to ensure that they do not become full, which can lead to performance problems.
There are a few different ways to check the usage of temp tablespaces. One way is to use the `SHOW TEMP TABLESPACES` command. This command will display a list of all the temp tablespaces in the database, along with their usage statistics. Another way to check the usage of temp tablespaces is to use the `V$TEMPSPACE` view. This view contains information about all the temp tablespaces in the database, including their usage statistics.