14 Tips on Freeing up Hard Disk Space
A common message in the AS/400 newsgroups and forums is a frantic plea for help from someone whose AS/400 is in danger of running out of disk space. The following are 14 ways you can free up disk space (in no particular order).
1. Run the WRKF (Work with Files) command to search for all files in library QSYS that fit generic name QHST* (system history log), and then delete all but two or three of the most recent QHST* files.
2. Run the WRKPRB (Work with Problems) command to list all problem logs, and then delete all unnecessary logs. You may have to change system value QPRBHLDITV, which governs the problem log hold interval, to a lower value so the system will let you delete recent logs.
3. Run GO CLEANUP, select option 1, and choose the appropriate cleanup options for your installation. For more info, read http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/QB3AGO04/4.3.
4. Remove obsolete user profiles, which take up space on your system. You can learn how to remove them at
http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/QB3AGO04/4.3.2.
5. Run the RCLSTG (Reclaim Storage) command to reclaim storage wasted by damaged objects, objects without an owner, objects not in a library, and so on. This command can take hours to run (and it can't be run in batch). To run RCLSTG, you sign on to the system console, run the ENDSYS (End System) command to put the system in a restricted state, and run RCLSTG interactively. For more information, see the tip "Unattended Reclaim Storage" at http://www.as400network.com/article.cfm?ID=6515 and a follow-up letter at http://www.as400network.com/article.cfm?ID=2726. (For AS400 Network Professional members only.)
6. Apply PTFs permanently because temporarily applied PTFs eat up DASD. Until a PTF is applied permanently, the system has to keep two copies of the code affected by the PTF.
7. Use the RGZPFM (Reorganize Physical File Member) command to reorganize database files that contain many deleted records. Another option is to specify REUSEDLT(*YES) on the CRTPF command when creating a new physical file or on the CHGPF command when modifying an existing physical file. You can read about the ramifications of using REUSEDLT(*YES) in "Reusing Deleted Records" in the May 24, 2000, Club Tech newsletter at http://www.as400network.com/resources/artarchive/index.cfm?fuseaction=viewarticle&CO_ContentID=8236.


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