However, it is possible to base the reorganization of the DB2 Directory table spaces on the reorganization schedule of the DB2 Catalog table spaces. These table spaces are logically related and DB2 requires that you reorganize them at the same time to keep them synchronized. DB2 has different rules for different sets of these table spaces. Do not attempt to reorganize these table spaces as DB2 will not permit it. These table spaces contain internal links.
Links are internal pointers that tie the information in their tables together hierarchically.
A link can be thought of as a type of parent-child relationship that. Also, as mentioned before, a different set of steps must be executed during reorganization for these table spaces. This causes a special calculation to be required to determine its size. Ensure incompatible operations are not executing 3. Take full image copy of entire DB2 Catalog and Directory table spaces 6.