If you are running out of storage space on your system, it might be time to delete your save files and cover letters.
From the character-based interface, use the Delete Program Temporary Fix (DLTPTF) command to delete PTF save files and cover letters. Do not use the Delete File (DLTF) command to delete PTF save files. If you use the DLTF command, the PTF function will not detect that you deleted the save file.
If you follow a PTF maintenance strategy, you normally will have several PTF groups stored on your system. The system keeps only the latest level of a PTF group on the system and never automatically deletes any PTF group. Therefore, when you upgrade to a new release of the IBM® i5/OS™ operating system, you need to manually delete PTF groups from previous releases that you no longer need.
To delete a PTF group, follow these steps: