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A DATA Step with the MODIFY statement may use more elapsed time and
EXCPs in Version 8 than in Version 6.

In some test cases, SAS wrote the buffer to disk for the master file
after every observation update.  SAS should not write to disk until all
the changes that affect the page in the buffer are made.  This behavior
accounts for excessive EXCP operations.

This extra I/O causes an increase in elapsed time.


A Technical Support hot fix for Release 8.2 (TS2M0) for this
issue is available at:

http://www.sas.com/techsup/download/hotfix/82_sbcs_prod_list.html#012162

For customers running SAS with Asian Language Support (DBCS), this
hot fix should be downloaded from:

http://www.sas.com/techsup/download/hotfix/82_dbcs_prod_list.html#012162

Operating System and Release Information

A fix for Release 8.2 (TS2M0) for this issue is available at:

A fix for Release 8.2 (TS2M0) with Asian Language Support (DBCS) for this issue is available at: