1. Work table files can be allocated to regular files. However, if the system switchover facility is used, disk space can be saved by allocating work table files to character special files because the files can then be shared.
2. The amount of space required for a HiRDB file system area for work table files must be greater than the total size of the work table files to be created in the area. If you specify the -a option with the pdfmkfs command, the HiRDB file system area can be automatically extended. We recommend specifying the -a option, since this allows the HiRDB file system area to be extended automatically when the total size of the work table files reaches the size of the HiRDB file system area.^#
   For details about the sizes of work table files, see Chapter 18. Determining Work Table File Size.
   
3. A HiRDB file system area for work table files must be created at the server machines where the following servers are defined:
   
   • Dictionary server
   • Back-end server

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To reduce the amount of disk space that is occupied by the HiRDB file system area for work table files when HiRDB restarts, before you restart HiRDB, execute the pdfmkfs command and then re-initialize the HiRDB file system area for work table files.

You can use the following command to obtain the peak capacity of a HiRDB file system area for work table files:

pdfstatfs -d name-of-HiRDB-file-system-area-for-work-tables

-d

Specifies that the maximum utilization value for the allocated HiRDB file system area is to be displayed. The peak capacity display that is output is this value. The maximum utilization value is cleared by entering the following pdfstatfs command:

pdfstatfs -c name-of-HiRDB-file-system-area-for-work-tables

-c

Specifies that the maximum utilization value for the allocated HiRDB file system area is to be cleared to 0.