How to increase the size of the Oracle temporary tablespace?

To increase the size of an Oracle temporary tablespace, you can follow these steps:

1. To begin with, check the current usage of temporary tablespace by executing the following SQL query:
2. Retrieve the tablespace name, file name, size in MB, and maximum size in MB from the database’s temporary files.
3. Identify the temporary tablespace that needs to be resized, and determine its filename and current size.
4. Use the ALTER TABLESPACE statement to adjust the size of the temporary tablespace, for example:
5. Add a new data file to the temp tablespace at the specified path with a size of 1024MB, set to automatically extend by 1024MB increments up to a maximum size of 8192MB.
6. Here, ‘temp’ is the name of the temporary tablespace to be expanded, ‘/path/to/new/tempfile.dbf’ is the path and file name of the new temporary file being added, ‘1024M’ is the initial size of the new file, ‘AUTOEXTEND ON’ indicates that the file will automatically expand, ‘NEXT 1024M’ represents the size of each expansion, and ‘MAXSIZE 8192M’ is the maximum size of the file.
7. After using the new temporary file in the tablespace, you may want to consider deleting the old temporary file to free up disk space. You can use the following statement to query the old temporary files:
8. Retrieve file names from the temporary tablespace.
9. Then use the file name to perform the deletion operation.
10. Modify the tablespace “temp” by removing the temporary file located at ‘/path/to/old/tempfile.dbf’.

It is important to note that increasing the temporary tablespace may cause a decline in the performance of the database, so it is important to choose a suitable time during the execution process to avoid affecting the normal operation of the database.