In Oracle, a tablespace is a logical storage unit that contains data. It is used to organize and manage the physical storage of data on disk. Checking the tablespace in Oracle involves verifying its size, usage, and other attributes to ensure that it is functioning properly and has sufficient space to accommodate the data stored within it.
Monitoring the tablespace is important for several reasons. First, it helps to prevent the tablespace from becoming full, which can lead to performance issues or even data loss. Second, tracking tablespace usage can help to identify potential performance bottlenecks and areas for optimization. Third, it is essential for capacity planning purposes, ensuring that there is sufficient storage space available to meet future data growth.