bdfd1m18Database Administration

Combining Files

When combining files, you may need to increase the number of ordinals in the top-level index file to prevent a large overflow in the upper levels of the files.

Figure 48 shows a TPFDF index file with pointers to different detail subfiles.

Figure 48. Index File Pointing to Different Subfiles


In Figure 49, the two detail subfiles have been combined to reduce I/O processing:

Figure 49. Index File Pointing to Combined Subfiles