Comparing disk files

The COMPARE-DISK-FILES command and the COMPFIL macro compare two disk files block by block (UPAM) or record by record (SAM, ISAM) and inform the user of the result of this comparison.

Temporary files or work files can also be compared. The files may reside on public volumes, Net-Storage or private disks.

Files with the following properties cannot be compared:

• empty files

• opened files

• locked files (e.g. SECURE lock)

• REPAIR-NEEDED identifier set

• NO-DMS-ACCESS identifier set

Entire file generation groupd cannot be compared, although individual file generations can.

PLAM libraries can be compared block by block. The members they contain cannot be compared.