The following error is due to a data set being corrupted.

   ERROR: An internal error has occurred while reading a compressed
   file.
   Please call your SAS Site Representative and report the
   following: compress offset = 278 , de-compress offset = 516,
   compress
   buf=8DE2E2E9C3C1F7E340C2C1E3D4C5C4D087D1C5E2F2C9C2D4F1D285D7D3C5E7F0
   ERROR: Record in file xxxxxx.xxxxxx  is too long for buffer.

This can occur if you do not have the SASIO redesign hot fix applied.
See  SAS Note 5642: "SAS Notes referring to Version 8 multivolume SASIO problems."
Without the SASIO redesign, some success has been reported by using PROC DATASETS REPAIR option to repair the corrupted dataset.

Here is an example:

 
  proc datasets lib=libref;
   repair dsetname;
   run;



Operating System and Release Information
Product Family
Product
System
SAS Release
Reported
Fixed*
SAS System
Base SAS
z/OS
8.1 TS1M0
*
        For software releases that are not yet generally available, the Fixed
        Release is the software release in which the problem is planned to be
        fixed.