Inconsistent data checks

When critical data is involved, use the CHECK option of DSN1COPY to prevent the undetected copying of inconsistent data to the output data set. The CHECK option performs validity checking on one page at a time.

You must run a CHECK utility job on the table space that is involved to ensure that no inconsistencies exist between data and indexes on that data:

• Before using DSN1COPY to save critical data that is indexed
• After using DSN1COPY to restore critical data that is indexed

The CHECK utility performs validity checking between pages.